Elegant
Easily the most refined MtG app out there, but has a few shortcomings. The color gradients only support 2 colors, the dragging to add/subtract more life is unnecessarily fast and sensitive, it does not allow for multiple planeswalkers, and it seems to have dropped support for infect (?!). Far ahead of the competition, however. Definitely worth the dollar.
PSFSnT about
20 Life - Magic The Gathering Life Counter