Finish the work on Android & iOS app

We have an android app that gets data from API, shows graphs and asks questions. Most of the things in android are done. Only a few things are remaining that are mentioned below:

1. Bet win calculation
2. Leaderboard
3. Invitation code
4. Missions & achievements 50%
5. Add notifications

Now in iOS you have to copy everything done from Android and code in iOS. In iOS only a few small things are done.

Please check the APK attached below to get an idea. Project price is $250.