Xamarin Voice/Text Chat App (Android, IOS) - Phase one

Hi, we need an experienced Xamarin developer to develop a cross-platform (Android/iOS) chatting app for internal use of a company.

The project is split into phases. The first phase is a VoIP SIP softphone that supports Voice calling, Instant Messaging, File Transfer and Presence. Exactly the same as Whatsapp.

The following features are required in the app for this phase of the project:

- Voice calls

- Voice conference calls

- Direct instant messaging (IM)

- Group IM

- File sharing and forwarding

- Searching capabilities in IM history and shared files

- Preferences for notifications of incoming message, sounds, etc.

- Utilizing push notifications to wake up the app.

- logging/editing call duration and adding notes after calls/IM sessions. Save to server (SQL Server)

The app is very similar to WhatsApp in features, only with the addition of Call/IM sessions logging.

We are using FreePBX server. We may consider changing it if some of the features can't be implemented.

We don't want to develop everything from scratch. We are looking into buying a VoIP SDK to simplify developing the app, such us ABTO SDK [login to view URL]

The SDK will make developing the app much easier and faster, so please put this into consideration when bidding. We didn't buy any SDK licenses yet, so, please let us know If you know a better SDK or you have worked with a different one that you are already familiar with.

We prefer Xamarin, but we may consider React Native if your proposal is excellent (technical and financial). We will not consider web apps at all.

The payments will be split into milestones, 3-5 milestones or what you propose. Each milestone will be funded before you start working. No down payment.

Next phases will be integration with company CRM system and MS outlook.

In your proposal, please mention:

- Past experience in Xamarin/React Native and any apps that you have developed using these tools/languages.

- If Xamarin, are you going to use Xamarin native or Xamarin forms? Why?

We will not waste our time with a copy & paste proposal. At least, let us know that you have read the requirements and ask us about any point.

Update: A very important note: The source code must be handed over to us and all the work done will be our exclusive property. The source code must be released at every milestone.

Skills: Mobile App Development, Android, iPhone, Xamarin, React Native

See more: voice text translations app iphone, free voice text chat room website admin control, iphone text messaging app android, linux voice text chat, turn ajax chat app android, webcam chat app android, jomsocial chat app android, wordpress app android ios, chat app development ios, porting app android ios, port existing app android ios appcelerator, voice text photo app, voice text chat php, voice chat app android symbian

About the Employer:
( 2 reviews ) Gaza, Palestinian Territory

Project ID: #20791183

Awarded to:


Hello. My name is Amar, I'm a senior .NET/Xamarin developer with more than 15 years experience. I'm very interested in your chat app, and will be pleased to work on it. I checked ABTO VoIP website, and they offer a Xa More

$1750 USD in 30 days
(10 Reviews)

51 freelancers are bidding on average $1619 for this job


Hi there! I've read the details you mentioned and I'm interested in working on this app at very fair low cost with great quality! If you give us your few minutes for the chat then we can discuss some important points More

$1500 USD in 20 days
(317 Reviews)

Hi there, I'm a Xamarin specialist with 5+ years in Mobile app development and having extensive experience in developing Hybrid mobile applications using C#, .Net Framework, Xaml, [login to view URL] etc. Kindly find our More

$2500 USD in 21 days
(602 Reviews)

Hello! I have read your idea and so much interested in your project. I have good experience with Xamarin forms/Xamarin Native and VOIP call so I feel confident in this project. I can develop backend api and admin panel More

$4000 USD in 30 days
(83 Reviews)

Hello. This is Qi-Feng Jin from China and I hope you are doing well. I have read the project description carefully and am really interested in your project. I have rich experience in mobile app/web development for more More

$1375 USD in 7 days
(48 Reviews)

Hi, I have been offering mobile application services across the globe for over 7+ years. I have deep knowledge of Xamarin ios , Xamarin android and cross platform applications. I can make use of the latest Xamarin tec More

$1750 USD in 30 days
(52 Reviews)

Hello, I have build a similar project in my past experience so I have experience in your project, I am a full stacking developer, I have worked many Application, I will provide you initial features which you require w More

$1000 USD in 20 days
(91 Reviews)

Hi there, I have checked the details I have great experience with: Mobile App Development iPhone Android Xamarin React Native Please start the chat so we can discuss this job more in detail then we will discuss the f More

$1375 USD in 7 days
(37 Reviews)

Hello, I have 7+ years of cross platform mobile development. I am very good at XAMARIN. I also have much experience in nodejs, angularjs and mongodb. I am sure that i can complete your project perfectly. Thanks for rea More

$2500 USD in 7 days
(71 Reviews)

Hello sir. How are you? I have checked your project description and attached pictures carefully and understand it well. I have good experience in iOS/Android application development. I am an iOS/Android developer with More

$1375 USD in 7 days
(45 Reviews)

Hello I have been developing React Native apps for over 4 years and built several React Native apps with React Native CLI and Expo. As an experienced React-Native developer with proven work history with React Native, More

$1375 USD in 7 days
(63 Reviews)

Hi, I am a Mobile Developer with 8 years of experience developing a mobile app on both platforms of iOS and Android. I believe you can use my skills and experiences for your great project, under checking your requireme More

$1375 USD in 7 days
(27 Reviews)

Hi, sir I am full react-native expert. I have read your post carefully. I am really interested in your project. Recently I have implemented many projects such as Delivery app, Driver app, Advertisement app,Chat app, More

$1375 USD in 7 days
(63 Reviews)

Hi, We can definitely design and develop inter-company communication app for you including conference calls. voice messages video calls etc. I am comfortable to work on a milestone basis. I can use either react nati More

$2000 USD in 45 days
(10 Reviews)

Hello There With over 7+ years of experience, We consider our-self very well versed having required technical skills to help you to develop & design a React Native based Voice & Text chat app similar to WhatsApp with More

$1750 USD in 15 days
(21 Reviews)

My name is Yin Ji. I am mobile&Web, full time developer and there are 19 developers and graphic designers in my team. We have developed over 110 mobile apps and 150 websites in past time. I am Xamarin Expert I underst More

$1750 USD in 30 days
(26 Reviews)

Hello I hope you're doing well. I read your project needs carefully and found my skills relevant to your project we are a team of expert developers and have more than 6 years of experience in the same domain. As per More

$1375 USD in 7 days
(18 Reviews)

Hi, I'm a talented developer for iOS, Android and have 11.2 years full time development experience. I have already developed a great number of various applications, namely on-demand services, location-based apps, s More

$1000 USD in 15 days
(13 Reviews)

How are you? I am confident I can full fill your requirement and I provide my skills in hopes of working with you. I am full-stack developer and I have 3+ years of experience in the iOS(iPhone, iPad) & Android app deve More

$1500 USD in 45 days
(39 Reviews)

We are a 7+ years old mobile app development and services company. From our global delivery center in India, we have helped several customers address their problems by offering these solutions in the mobile application More

$1375 USD in 15 days
(11 Reviews)

Hi there, 100% similar work [login to view URL] as you are looking for Build App like WhatsApp i have already done similar app like WhatsApp Feature Chat Group chat Vi More

$2500 USD in 30 days
(72 Reviews)