AravKuk (Kitvey Araya) Android Application: https://play.google.com/store/apps/details?id=com.eladcohen.aravkuk
Source code for Kitvey Araya Android App.
The books can be found in: https://github.com/eladcandroid/aravkuk-android/tree/master/app/src/main/assets/ikvey_hatzon
Feel free to contribute.
Nice article on Hebrew that explains how to contribute to GitHub: https://internet-israel.com/%D7%9E%D7%93%D7%A8%D7%99%D7%9B%D7%99%D7%9D/git/%D7%A2%D7%91%D7%95%D7%93%D7%94-%D7%A2%D7%9D-%D7%92%D7%99%D7%98%D7%94%D7%90%D7%91/