Hi
I have gone through your project and would like to offer services for the posted job of updating the react native app with the big things of adding buttons, form and updating IAP. We can get the task done for you.
I have a team of react native developers with 4+ years of experience and worked on many react native projects. More over we have skills in UI/UX, WEB & MOBILE (React Native, Flutter, Ionic, android/ios), CMS, Backend( APIs, nodejs, PHP, laravel, codenighter, MongoDB) (Software engineers) and SQA engineer.
Let us have more discussion related to your project so we can plan and add clarity to your project also allow you to evaluate us. Once you are satisfied we are willing to start rightaway.