Online sri lankan mobile app development jobs jobs

I'm seeking a skilled app developer or designer to revamp the user interface of a mobile app available on both iOS and Android platforms. The project entails: - Modernizing the visual aesthetic of the app. A touch of modern design style is preferred. The ideal candidate should: - Demonstrate expertise in UI/UX design, particularly for both iOS and Android platforms. - Have a strong grasp of modern design aesthetics. - Show evidence of previous work in app UI design, especially projects involving substantial redesigns. This job requires an individual with a creative eye for design, attention to detail, and understanding of modern aesthetic trends. A portfolio showcasing past work will be highly regarded in the selection process.

I'm seeking a skilled web developer to build a website dedicated to buying Ethereum. Crucial...gateway: An efficient payment system needs to be integrated, need to support multiple payment methods for a seamless customer experience. - User authentication and profiles: Security is paramount. The inclusion of a user registration system and individualized profiles is a must for tracking transactions and ensuring user data safety. The ideal candidate should have a strong background in web development and a thorough understanding of cryptocurrency, particularly Ethereum. Experience with payment gateway integration and developing secure user login systems is essential. Looking to have this project completed within a month. Your commitment to meeting this deadline will be great...

I'm looking for a Django expert to extensively help me build a web application. The key goal is to run a project in visual studio.

...will serve as a platform for selling products online, with a custom frontend design provided by us. The successful candidate will be responsible for building the entire website, including frontend and backend development, and integrating Razorpay as the payment gateway and Shiprocket as the delivery partner. **Key Responsibilities:** 1. **Complete Website Development:** Building the entire e-commerce website from frontend to backend, ensuring seamless integration and functionality across all components. 2. **Frontend Development:** Implementing a custom frontend design provided by us or delivering a professional frontend if available. Ensuring responsiveness and user-friendliness across various devices and screen sizes. 3. **Backend Development:** ...

I'm seeking an experienced math tutor to specifically help me with Trigonometry functions. Here's what I'm looking for: - Tutoring through online video chat. - Expert knowledge in Trigonometric ratios, Unit circle, and Trigonometric identities (the focus areas). I want to start with trig function transformations. I want to start with basics such as amplitude, period and principal axis. After that I want to to do vertical shift which will be easier once you have those basics are covered. You may start from the graph of y = sin(x), then move on step by step until reaching y = a sin(b(x - c)) + d; where a, b, c and d are real numbers. Also, provide the same progressive explanation for cosine and tangent functions Please type in "Trig Functions" So I know th...

I am seeking a seasoned website developer with experience in WordPress and E-commerce projects. Primary ...WordPress and E-commerce projects. Primary tasks include: - Creating an E-commerce website using WordPress, implementing a sleek and user-friendly design that enhances the shopping experience - Suggesting and implementing appropriate WordPress themes that best suit the nature and objectives of my business Suitable candidates should have: - Demonstrated experience in E-commerce website development - Strong skills and know-how on WordPress - A keen eye for detail, with a flair for creating attractive and efficient website designs Note: I currently do not have a preferred theme, so I would appreciate it if you could provide some suggestions based on your previous work or ...

I'm in need of a developer to create an e-commerce platform for my salad business, where customers can place orders for weekly and monthly subscriptions. Key Features: - The main purpose of the website is to process...Management: The site should allow customers to easily sign up for weekly or monthly salad deliveries. - Payment Processing: A secure payment gateway integrated to the system is essential. - Customer Account Creation: Each user should have a personal account where they can manage their subscriptions, payment details, and order history. Ideal Skills and Experience: - Proficiency in e-commerce and web development. - Experience in creating subscription-based platforms. - Familiarity with payment gateway integration. - Prior work in implementing user-friendly shoppin...

...users can view the menu which features our BBQ-Brisket, Ribs, and Burgers. - Location Map: An interactive map that indicates our food trailer's current and/or regular spots. As for the design aspect, it should reflect our branding elements including our: - Logo - Specific Color Scheme - Font Style The ideal freelancer for this project should have: - A strong background in web design and development - Experience with food industry websites would be beneficial - Graphic design skills for optimally displaying menu items and incorporating my specific logo, color scheme, and font style. This project focuses on function over complexity; Hence, a freelancer with the ability to create a user-friendly, visually appealing website would be a great fit. ####### I’m looki...

Building a Dating Website with Mobile Application I'm looking for a skilled developer to create a dating website with a mobile application at a reasonable price. The features and functionality should mirror those of EliteRencontre. If you have the skills to do so, please reach out to discuss the project details.

I am looking for a mobile application developer who can help me build a mobile application that allows my customers to fund their betting accounts with the help of MobCash API. The application should be available on both iOS and Android platforms. Design and UI/UX: - Although I don't have a specific design in mind, I want the application to be user-friendly and intuitive. I am open to suggestions and ideas for the design and user interface. Additional Features and Functionalities: - Besides the MobCash API integration, I am not sure about any additional features or functionalities that I may require. I am open to suggestions and recommendations from the developer. Ideal Skills and Experience: - Experience in developing mobile applications for both iOS and Andr...

...help launch and manage a versatile online business. This project offers a generous investment opportunity. The ideal candidate will: - Be open-minded and flexible in terms of the type of online business to be established. It may range from e-commerce stores, online marketplaces or a subscription-based service - Have a primary goal of generating high revenue, but also focus on building a strong customer base and providing unique products or services. - Have the ability to conduct market research and target the potential audience. Currently, there are no specific demographics in mind, hence a comprehensive market research will be necessary. About Us: We are a motivated investor looking to allocate £500 monthly to fund the development and growth of an ...

...turn our online business dreams into reality! About Us: We are a forward-thinking investor with a keen interest in launching and scaling an online business with the potential for significant growth and profitability. With a dedicated monthly investment of £500, we're committed to building a successful venture and are seeking partners who share our vision and ambition. Opportunity: This is an exciting opportunity for skilled professionals who are eager to collaborate and contribute their expertise to a promising online venture. As a partner, you'll have the chance to be involved in all aspects of the business, from strategic planning and development to marketing and operations. What We're Looking For: Experienced individuals with a pro...

I am seeking skilled professionals to join me in an ambitious project to create a sustainable village in Australia. This village will not only be beneficial for the environment, but will also provide a unique opportunity for investors to earn a standard annual income. Key Features: - The focus of this project is to ensure that the village is fully self-sufficient and sustainable. Key sustainability features include: - Utilization of renewable energy sources - Implementation of organic farming practices - Establishment of waste recycling systems - Aptitude in a diverse range of skills to ensure the village's overall health and success Skills Required: - Construction and architecture: We need professionals who can design and construct eco-friendly, sustainable buildin...

Graphic designer for frelancer

Custom-built web-based application and mobile app needed Skills and experience needed: - Strong expertise in custom web application development - Proficient in mobile app development - Knowledge of database management systems - Experience in creating responsive and user-friendly interfaces - Familiarity with security measures and best practices for data protection - Good communication skills and ability to understand and implement client requirements efficiently. -Preferably worked on projects in GCC and familiar with Arabic Language Main Requirements: We are a Contracting company and we deal with customers and projects mainly. we need a software to handle our complete process. first we need to maintain a complete profile for : branches ( bran...

I'm looking for a talented app developer to bring my idea to life. The app is aimed at cafe owners, allowing them to offer special deals to their customers. Key Features Required: - Ordering System: The app needs to include a total of three pre paid coffee packages and an ordering system to select one of the packages. - Tracking system: once a packages is selected, the app should be able to communicate with the Cafe to deduct from the package balance each consumption of the pre paid food. The app will need to be developed for both iOS and Android platforms. The app should be visually appealing and user-friendly. The design should enhance the user experience, and I am open to suggestions and recommendations in this area. Prior experience ...

...JavaScript. - Experience in software development with a focus on interfacing with hardware devices. - Familiarity with serial communication protocols and device integration. - Strong understanding of software architecture and design principles. - Excellent problem-solving skills and attention to detail. **Preferred Qualifications:** - Experience with integrating hardware devices such as digital weighing scales. - Knowledge of relevant frameworks and libraries for device communication. - Understanding of accounting principles and invoicing processes. - Previous experience with cloud-based solutions and API integration. **How to Apply:** Interested candidates are requested to submit their proposals along with examples of previous projects related to software development ...

I'm looking to develop a new React application and would like to incorporate both inbound and outbound calling features with Twilio. Key Project Details: - I need both inbound and outbound calling features to be integrated into this new application. This means the application should support making calls to external numbers as well as receiving calls f...the application will be developed in this framework. - Experience with Twilio integration is important, as we'll be leveraging their services for the calling functionality. - Previous work on real-time database updates would be highly beneficial, as this is a core feature for this project. If you've handled similar projects, have the necessary skills, and can ensure a high-quality, efficient development process, I&#...

...will be designed to improve daily productivity through the utilization of the gyroscope. Key Requirements: - Development of an app that can interact with the gyroscope in a unique way, including the ability to handle gyroscope events and a counter that's based on gyroscope data. - A modern design for the apps, reflecting a minimalistic aesthetic yet with a touch of customization. - The core aim of the app should be to enhance daily productivity. I'm searching for a proficient professional with experience in creating watch apps and a solid understanding of gyroscope functionality. The ideal candidate should also have a proven track record in UI/UX design, ensuring the app is not just functional but also visually appealing. This project ...

I require a skilled web developer to build an affiliate marketing site. Key aspects include: - User registration and login: Registration should be intermediate-level, capturing not only email and password, but additional profile details. Ideal skills: - Experience in building affiliate marketing sites - Knowledge in user registration programming With these skills and experiences, you'll successfully meet the project requirements. I look forward to reviewing your proposed approach.

I'm seeking a skilled developer to create a user-friendly web application that securely stores passwords, generates strong passwords, and manages password accessibility. Description: Documentation centered around user-friendly password storage. Emphasis on simplicity, usability, and effectiveness. Web-based application featuring a modern and intuitive user interface. Requirements Analysis: Implementing secure session management, hashing, and salting passwords. Conducting input validation and sanitization. Utilizing a tool to assess password strength. Implementing user authentication and access control. Integrating a database for secure password storage. Algorithm of Proposed Solution: Designing a database schema tailored for password storage. Employing web technologies such as HTML,...

I urgently need a freelancer who can help me with two tasks: registering a domain name and developing a small business website. The website should have the following key features: - A Contact Form: This will be essential for potential clients or customers to reach out to me. - A Product Catalog: I need to showcase the products/services I offer. - Email Integration: I will need around 5 emails set up for this site. The overall design of the site should be professional. I want my business to be taken seriously, so the website should reflect this. Ideal freelancer should have: - Experience with domain registration - Proven track record in creating small business websites - Proficiency in setting up and integrating contact forms and product catalog systems - Ability to set up email accoun...

I need a skilled game developer to create a hyper casual game for Android, in the theme of voodoo and other games Key Requirements: - Game Development: You should have experience in developing mobile games, specifically hyper casual games. - Endless Runner Mechanic: Experience with and understanding of endless runner games is crucial. - Android Platform: The game will be developed exclusively for Android. Your responsibilities will include: - Designing and developing the game in line with the urban chase theme. - Implementing the endless runner mechanic effectively to make the game engaging and addictive. - Ensuring the game is compatible with Android devices and adheres to the necessary guidelines for smooth operation. If you have a portfolio that includes similar games,...

I'm looking for a skilled app developer to create a photo sharing application for iOS and Android platforms. The primary purpose of this application is to share professional photographs. Key Features: - A function that enables users to like or upvote the published photos. - The capacity for users to share photos on other platforms should also be included. User Access: I would like the app to incorporate an email registration method for users to join and manage their accounts. The ideal freelancer for this project should have experience in building photo-sharing mobile applications and understanding user engagement features. Proficiency in iOS and Android app development is necessary. Your portfolio of similar projects will be of interest.

We at BotXpert are engrossed in the development of a cutting-edge videobot for our clients. We're currently in need of a skilled frontend developer to join us in this exciting project. Key Requirements: - Proficiency in programming languages for frontend development. Ideally, you should be familiar and comfortable with HTML/CSS, JavaScript. Although we skipped this question earlier, we believe familiarity with these technologies will aid in smoother project flow. - Design and implement the size and style of the video in the bot widget. The specifics in terms of the style are open for now and would be decided as we progress further. - Development of key functionalities for the videobot widget. Specifically, the widget should have play/pause buttons and volume cont...

Excitingly, I'm needing a competent web application developer who can expertly play around with large language models (LLMs). The core purpose of my project is for question answering. The web app should be designed to incorporate various LLMs and let users select a model to interact with I'm looking for a developer to develop a chatbot-like application, similar to Moreover, the application has to be crafted to allow: - LLM selection: Users should have the liberty to choose their preferred LLM. - Text input: Users should be able to input their queries into the system. - Text output: System should generate textual answers based on the selected LLM. - Plot output: This is a unique feature, I'd love the system to also present

I am seeking a talented web developer to create an e-commerce website for my business. Key Requirements: -Simpal web devloper. - basic in HTML and CSS. - Experience in telly calling -Data entry work. While I've yet to decide on the total number of products and specific e-commerce functionalities, at this stage, having a background in creating versatile and scalable e-commerce platforms will be critical for this project. Your experience will guide my decisions related to shopping carts, product pages, customer reviews and the number of products the site will accommodate. Please share some examples of the e-commerce websites you've previously developed.

I'm looking for a skilled developer who can create a MERN stack web application using react-native-web. The project will involve the following functionalities: - **Use...Users should be able to list customer requests and apply for contacts. - **Subscription Logic**: The application will have tiered subscription models (e.g., Basic, Premium). Users will need to subscribe to access certain features. - **Multi-language Support**: The application should support multiple languages. Ideal skills and experience for this project include: - Proficiency in MERN stack development - Experience with React-Native-Web - Familiarity with subscription logic implementation - Previous projects involving multi-language support Please keep in mind that only providers will have access to the subs...

I need a mobile application that works on both iOS and Android platforms. The app will primarily serve localhost purposes in its functionality. Key Features: login User Authentication to http localhost , after login, display 2 buttons, and display the name of user one button for Entrance and the second button, for stop . after login need to connect to localhost mysql database table on my local web application Please submit your proposal with relevant examples of your work. I will show more detail in chat

I'm looking for a proficient graphic designer to assist me in creating a unique logo for my brand. Key Responsibilities: - Design a logo based on the references I will provide - Propose a brand color palette Ideal Candidate: - Expertise in creative and unique logo designs - Strong color theory knowledge to propose a fitting color palette - Ability to interpret references and infuse originality in the designs

Project Title: EKLEEL - Serious Relationships for Marriage Overview: We are seeking a skilled UI/UX designer to create visually appealing and user-friendly mobile interfaces for our new application, EKLEEL. The application is designed to facilitate serious relationships with the ultimate goal of marriage. We aim to provide a platform that emphasizes full transparency and effective communication among users. Objective: To design a vibrant, engaging, and intuitive user interface that reflects the seriousness and integrity of the relationships our app intends to cultivate. Key Deliverables: User Interface design for all screens and user flows. User Experience enhancements, including interaction design and animation. Consistent theme and graphics that align with the app&rsquo...

I would like to request a quote to write a 99-day course, every day I need to do a 5-minute video from an attached list

I'm in dire need of an experienced online English teacher who can effectively instruct my students to advance their proficiency in English. - Mode of Instruction: The teaching will solely be online. Knowledge in utilizing different types of educational tech platforms for teaching is preferred. - English Proficiency: The goal is to elevate my students to an advanced level of English. Previous experience in teaching English at an advanced level will be given precedence. - Area of Focus: Instruction should concentrate on improving conversation skills, grammar, and vocabulary. Hence, someone who is adept at teaching these areas is strongly desired. Applicants with a track record of successfully teaching these aspects via online platforms will be significantly ad...

...practices, I'm in need of an expert to look at my kitchen layout, suggest hygiene parameters, and develop a comprehensive HACCP Plan. I run a restaurant featuring Asian cuisine, therefore a background in this food sector would be advantageous. The scope of work includes: - Review of provided kitchen map with a focus on hygienic design principles - Suggestions for implementing hygiene standards - Development of a HACCP Plan that covers: - Raw Material Receiving - Storage and preparation of food - Presentation and service to customers Ideal skills and experience include: - A background in food hygiene inspection - Solid knowledge of Asian cuisine food safety - Experience in creating HACCP plans for restaurants. - ISO 22000 Certified or HACCP Certified Your input...

...hire skilled professionals for the development of an automated Telegram bot. The bot should be proficient in Chinese, as I am unable to communicate in English. Here are our basic requirements: - Sending Automated Messages: The bot should be capable of sending automated messages to users. - Replying to User Queries: It should be able to respond to user inquiries accurately and efficiently. - Collecting User Data: The bot should systematically gather and handle user data. - Card Dispensing: The bot needs to issue electronic cards, with an emphasis on checking card balance. The specifics will be discussed in greater detail during the project. - Unique Redeem Code Generation: The bot needs to generate unique redeem codes for users. The development of this b...

I am looking for a skilled web developer with expertise in Python using Django and knowledge of e-commerce, specifically payment gateways and QR codes. Key Features: - Development of an e-commerce website - Integration of a payment gateway, focusing on QR code payment system - Ensuring smooth user experience in the shopping cart and checkout process Skills & Experience: - Proficiency in Python using Django - Proven experience in developing e-commerce websites - Familiarity with different payment gateways, specifically QR code integration - Prior experience with similar projects would be a plus Kindly provide examples of your previous work and details on how you would approach this project.

I'm in need of a competent virtual assistant for my growing mobile car wash business to help systematize my leads' pool. Your main responsibility will be to sort through different leads that come via phone call,text,email. screening out those who've explicitly stated they dont have the budget in our services. these leads are all warm and already interested in our business we just need them to book our services, and for you follow up until they book. In addition to this, you'll be tasked with performing data entry jobs as part of your duties. Having a keen eye for detail and excellent organization skills will be of immense benefit in carrying out these tasks effectively. Key tasks and qualifications include: - Reaching out and sifting through leads via ...

I'm seeking an experienced developer who's capable of finalizing the 10 bot templates I already have on make.com. The templates need to be customized for my industry and connected to my Social Media account, google etc. They need to be fully tested and operational for handover and delivering what they are supposed to. Examples of existing workflows: (1) Identify trending SEO keywords and create google sheet (template in place but not customized and functioning yet) and create 3 articles/blogs with those key words (to be created). The rest are very similar.

I'm looking for a talented and experienced app developer to build an informational app for both iOS and Android platforms. Here's what I need: - Proficiency in developing apps for both iOS and Android - Strong UX/UI skills to create an intuitive and attractive design - Ability to ensure seamless performance across all devices While I haven't specified features at this point, I require guidance from you on that, so your creativity and familiarity with the latest trends in app design will be highly valued. Although the primary purpose of the app is informational, having experience in integrating e-commerce or social networking features may be beneficial for future updates. Please provide a portfolio or examples of similar work done.

I'm in need of a freelancer to design a simple, user-friendly blog website targeted at the general public. The primary function of this website should be for blogging. Key Features: - User Sign Up: The website should include a straightforward sign up process for new users to create an account. Ideal Skills: - Web Development: You should have experience in designing simple yet effective blog websites. - User Interface Design: The website needs to be user-friendly. Understanding of UX/UI design will be advantageous. With these specifications, I'm optimistic we can create a platform that successfully engages the general public with my blog content. If you believe you have the skills and experience to deliver this project, I would love to hear from you.

I require expertise in mobile tracking specific to Android, with the focus on deep analysis of Whatsapp chats. - Data Extraction: The service should comprehensively extract media files that include photos, videos, and audio. Additionally, text messages and even deleted chat history need to be obtained. - Accessibility: I currently have physical access to the target Android device for the required setup or software installation. Ideal Skills: - Proficiency in Android OS and understanding Whatsapp functionalities. - Experience with data extraction and recovery. - Familiarity with mobile tracking and surveillance tools. Your task will be both challenging and sensitive, demanding utmost ethics and discretion.

**Project Description:** We are seeking an experienced Laravel developer to spearhead the development of a robust multivendor e-commerce platform. The platform will serve as a marketplace where multiple vendors can sell their products, integrated seamlessly with Razorpay for secure payment processing and Shiprocket for efficient order fulfillment and delivery. **Project Requirements:** 1. **Laravel Expertise:** The chosen developer must possess a strong command of Laravel framework, ensuring efficient development and seamless integration of required features. 2. **Razorpay Integration:** Implementation of Razorpay payment gateway to facilitate secure transactions within the platform. 3. **Shiprocket Integration:** Integration of Shiprocket API for streamlined order managemen...

I'm looking for a talented developer who can create an offline desktop application using either Flutter, React JS, or C#. Key r...create an offline desktop application using either Flutter, React JS, or C#. Key requirements: - Ability to work with Flutter, React JS, or C# - Develop an offline app (choice of backend is up to you) - Include data synchronization and file management features - Make sure it's developed for an interactive panel to ensure a user-friendly interface The right person for this job is a competent developer with a keen sense for detail and strong experience specifically in desktop app development. They should be familiar with data synchronization and file management, as well as comfortable making decisions regarding backend develo...

...platform. The algorithm should be developed using , and it will be implemented on both the website and mobile app. Key Requirements: - The algorithm should allow automatic filtering by price range. - The algorithm should offer sorting options by mileage or year. - Integration with the existing car database is crucial for smooth functionality. Ideal Skills and Experience: - Proficiency in is a must. - Prior experience in developing similar reactive search algorithms, especially for e-commerce platforms or car sales is highly desirable. - Strong understanding of database integration and filtering mechanisms. - Ability to optimize the algorithm for both web and mobile platforms would be an advantage. Your work will be integral to the user experience of the platfor...

As a content provider, I need a seasoned web developer who can design a utility bill payment website for me. Experien...user-friendly and secure. - The selected candidate must be proficient in integrating the Payu payment gateway into the website. This will allow us to streamline all transactions. - The website needs a robust user management system. Users should be able to register accounts, log in, retrieve lost passwords, and have their own personal dashboard. - The ideal candidate should have a good grasp of web development languages particularly related with e-commerce websites. They should have hands-on experience integrating payment gateways and designing user management systems. Anticipate your informed bids and looking forward to a professional who can execute this task ef...

Title: Advancements in Deepfake Detection: Safeguarding Audio and Video Integrity The realm of multimedia content faces an increasing threat with the rise of deepfake technology, which can fabricate convincing audio and video simulations of individuals. To combat this, the focus has shifted towards developing robust deepfake detection systems capable of discerning between genuine and manipulated media. This project proposes an innovative approach towards deepfake detection, primarily targeting both audio and video formats. The cornerstone of this endeavor lies in training a sophisticated model on a comprehensive dataset comprising authentic and deepfake media samples. By leveraging advanced machine learning algorithms, the model aims to attain the ability to analyze any MP4 file provided...

I'm looking for a skilled professional with dual expertise in both Android development and UX design. Key Goals & Responsibilities: - Improve user experience and aesthetics of my existing Kotlin Android application. - Enhance the app's look, colour, navigation, usability, and responsiveness. - Conduct code refactoring to ensure optimal performance. Proper understanding and experience in the following are crucial: - Android application development. - UX design practices. - Code refactoring, optimization and enhancing performance. - Visual aesthetics, and robust navigation systems. Your primary focus would be to revamp the app to make it more user friendly, agile and aesthetically pleasing. If you have sucessfully handled similar projects, please apply.

I need a seasoned developer to create a cros...seasoned developer to create a cross-platform cars marketplace app, available on both Android and iOS platforms. The principal focus of this app is to list cars for sale, emphasizing a user-friendly interface for potential car buyers. Essential Functions: - Implementation of advanced search filters to allow users efficiently navigate through the car listings based on their preferences. - Provision for high-quality image uploads to ensure that the listings are rich in visual details to attract potential buyers. Ideal Skills: - Experience in developing cross-platform mobile applications. - Expert knowledge of UI/UX Design for optimizing user interface. - Proficiency in advanced search algorithms. - Experience with image ...

...expert mobile app developer who can create an engaging crossword puzzle mobile app for both Android and iOS platforms. This would be very similar to "English Crossword Puzzle Game" app in functionality. Key Features: - Design should be fun and playful, engaging users while not being overly complicated. - Game should have multiple difficulty levels catering to all type of users - beginners to experts. - Users will use coins to unlock hints, answers and explanations; these could either be purchased or earned by watching ads. - In addition to coins, the game should have an option for an ad-free version purchase. - Backend should allow a no-code method of uploading new crossword puzzles Needed Experience: - Reasonable mobile app...

My project will focus on the exploration of human capital development and its impacts on economic growth, specifically in the context of India. I am interested in the links between education, training, health and other factors that contribute to this development. Key objectives include: - Analysis of current trends and challenges in human capital development - Review successful strategies and policies - Propose suggestions for the future The ideal freelancer needs a strong understanding of economic development, specifically in human capital. Experience or knowledge in Indian economics will also be beneficial. An ability to present complicated economic concepts in a clear and understandable way is required.