There is an GitHub Project called https://github.com/OnlyInAmerica/OpenSpritz-Android.
I've grabbed from GitHub the source an packed in an app.
So you can read EPUP with the spray idea.
The following features are included:
- Adjust the speed (WPM)
- Pause function
- forwqard backward rewind (with chapter)
- Invert mode
For opening of EPUP it is more practical to look for a file explorer out the book and then open the app. Within the app you can also open books.
Note: Long words will be displayed double-spaced.
Who wants to test the app can download the APK for Android here