Android and iOS app modification

This project is for a modification to an existing app project in Xcode and Android studio.
In iOS:
Modify the Donation payment to be guest with card payment (PayPal sandbox).

Android:
Modify home page items to be full screen like iOS version.
Add search field in item list page like iOS version.
Add repeat button on the audio player in item view page like iOS version.
Move the font size slider to top.
Add about us page.