That is pretty good. It would be great in fullscreen and also with also Infect... Something like mtglifecounter.com or MTG life counter app on appstore...
This as potential to be a great magic counter. If you added more things it would be so much better. My friends and I used it and it was useful but it could have been better.
There are tons of applications like this floating around in various forms... This one is overly simple. I agree with the other reviewers that said it needs more to it. A +/-5 button on each counter would be cool too. There is a lot of potential to make useful MTG apps, so use your imagination and think of what else you could implement that would help make gameplay more efficient. Something I've always wanted to see was a "what if" button, where you could enter all the cards in play and in your hand, and see interesting/powerful combos. This is obviously a huge endeavor in scope but I'm just giving some motivation to think of ideas.
Anyway, to comment on what is already in the flash, I do believe the poster below me is right - you should watch your copyrights. Also the dice should be more easily accessible, not in the options, and you could make it custom-sided.
Needs more mechanics ie. Poison Counters and coin flips.
cool mang. i cant say i play at all recently, but this will certainly prevent a lot of bickering lol