After some delay, I finally released version 5.0 of Chess for Android, available on Google Play or as direct download.
New features include:
* Time control to define a chess clock for both sides.
* Double engine analysis lines during tournaments, especially useful with pondering on.
* Re-factored a lot of the engine handling code, with improved cleanup of hanging engines.
This is a relatively major release, so please let me know if you encounter any issues. Also, as usual, suggestions for improvements are welcome.