Mobile app development for both iOS and Android

I need an iPhone/iPad andorid app. I would like it designed and built. Hello, I need a clean code for Android Rewards App, it should offer Free Gift Cards or can be described as Make Money App where users can register and make money by watching videos, installing apps etc. (you may provide other available options we may include to make it more user friendly or to get viral instantly). 1. It should be Integrated with all Ad-Networks for our end users to make money or points by watching vidoes earning , installs, tasks, surveys like wise 2. It should also use all social platforms to share with friends (with referral code) 3. The backend maintenance as low as possible like with firebase or AWS or even low for n numbers of users 4. The end user may collect points (converted in currency) and user can raise support ticket for gift card or money transfer to his account. 5. Other small things like minimum withdrawal amount to be described before withdrawal button enabled etc. Pls suggest other options for better user interaction/friendly etc. An example can be seen here : [login to view URL] The app should be have all the features above in the app and be able Integrate any ad network sdk along with our own offers through API More suggestions welcome. It should have monthly subscription that user need to pay 2$ for every month in ilorder to use the app .pls respond if you are within the budget