Shredder for Android

I bought and installed a copy of Shredder for my Android phone on the weekend and I'm not disappointed -


Like any chess computer, it gives you a rating and advises and assists you when you have played the wrong move (coach). There is also a tactics module thrown in (1000 problems). For £5.99 in total I think it is a worthwhile investment ... (should be available on Apple iPhone as well)

https://market.android.com/search?q=shredder&c=apps