Our current priority is in-game Chinese-English language module, but with our experience in making Chapter 1-3, Chapter 4, while will take time, will come out hopefully faster this time. Please, some patience will be much appreciated. And we're trying to make sure the eventual Andorid/Renpy build is perfect without too much marring.
If you want to know when the Android Build for Chp4 releases, just follow DelaX for future updates. We're determined to share this awesome story with the world.