Chess Titans is not available for Android but there are some alternatives with similar functionality. The best Android alternative is Lichess, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Chess Titans and six of them are available for Android so hopefully you can find a suitable replacement. Other interesting Android alternatives to Chess Titans are DroidFish Chess (Free, Open Source), Pure Chess (Freemium), Shredder Chess (Paid) and JustChess (Free, Open Source).
Lichess is the most complete chess experience, with a simple interface that focuses on the game, a massive array of game related tools and a huge, worldwide community. The Lichess covenant: lichess.org will always be free.
Open Chaos Chess is a variation of chess where you can pick the piece that moves, but the moves are random. As such, you no longer win by checkmates. Instead, you win by eliminating your opponent's pieces.