This app has everything you need for playing go! All board sizes, adjustable AI difficulty, even the ability to save your matches and review later. I personally have never had a problem with crashes on my iPad2, however to anybody having issues adjust the AI bit, its overthinking is probably the issue (so not the app, but the device is making the crashs). There are settings to make the AI think less without making it any easier
Mazog109 about Little Go