KindleCounter is my new Magic life counter for the Kindle. I tried it out for the first time at the Scars of Mirrodin prerelease Friday night, and it worked great! The Kindle is a vastly superior platform for this sort of application over a phone because of the larger display and the fact that there are no worries about running out the battery.
I give a rundown of it in the video. Sorry for the blurriness.
Though it can be used on any device, it’s really designed for the kindle. It’s driven by the keyboard. The top row deals damage and gives poison counter, the second row gives life and removes poison counters. I tried to lay it out logically.
If you do want to try it on a computer, +1 life for the opponent is mapped to backspace (that’s the first key on the right of the second row on the Kindle).
I’d also like to point out that Thundermaster works great on the Kindle as well.