Hello,
i am expert in Java development
I read your requirements an you need a application and i already done many project same as your requirement so please message me for more discuss
We have already designed, developed & successfully delivered many android apps for various clients similar to your requirements in the past.
I am expert with strong Java experience
I have developed similar application that you want.
I think we can be a really good partner each other.
i have 5+ year experience in software development field , in this time period i completed many project and use multiple languages.
first check my live project same as your requirements then give me a chance.