Fixing issues and developing properties for a mobile game

Job ID: 31135369

Budget: $250 – $750 USD

I have a game app. Made by cordova and it is webview.

What i want?

1- I want existing problems to be fixed. Rhese are, reward ads problems and some text pages are empty.

2- I want to add the meaning of the word to the "word result page"

3- I want the math operations to come from the database.

4- I want to add time option to tournament and duel modes. I will determine this through the admin panel.

5- I want an option to put a name and external prize in the tournament

6- I would like to add a phone number to the membership information.

This is my app

https://play.google.com/store/apps/details?id=iskelot.zafer&gl=TR

My app has mongo databse.

Try and give me your best offer. My budget is 500 dollars for all specs.