I think your app idea is truely a million dollar app idea and would love to work on it. As a mobile developer I always look for the next good idea like this. As part of the project I can provide a basic layout of the app, and hourly updates on work as needed with no problem. I am fluent in java, C#, selenium, and QA automation. All of which are muched need for strong mobile app development. Do you know what platform the app will be used on? IE: IOS,android, windows. As stated before I am fluent is c# which is the most common and efficient language to reach across all 3 platforms depending on how you chose to use the app.