Simple edits to a Kindle app from an existing Android app

Hello Freelancers, I have an existing Android app that I want turned into a Kindle app, however, there are a few small edits that need to be done. The app is basically a sound machine and works great on Android devices, but on the Kindle there is a break or pause when the sounds loop. Some of the sounds are also too faint. All I would need are these small modifications, but I need them done quickly and efficiently. Bid with confidence as I have a spotless rating as an employer.