Minimalistic Magic: the Gathering life counter for two players. Swipe up and down or tap to change life totals, swipe left or right to reset. Check the game log if there's confusion. Fits right between your decks where you both see the count.

20/20 Life Count is free until Sun 26th, $0.99 after that.

Some initial user comments:
"I really like this app. It's slick, works very responsively, and doesn't cover the screen with a bunch of stuff that distracts from the data."

"Amazing! I've been searching for just an easy plain life counter and you brought it to me!"