Best yet

I have tried most of the available checkers apps and this one is the best. Others apps have annoying features such as oscillating pieces which cannot be turned off and some give up when you are winning rather than battling it out to the finish. Some other apps are too slow to make a move or ask you each time if you want to move twice, etc.
This app also adapts to the screen orientation unlike most other checkers apps.
I would be happy to pay to get rid of the ads.

Winky2011a about Checkers, v2.2.1