Yet Another Life Counter (YALC) is a a life counter app for all those card/RPG games you like so much.
YALC allows for up to 8 counters that you can use for just about anything. Allows for the rolling of a die with any number of sides (just a random # generator). Keeps a score history along with undo and redo for those scoring mistakes that can happen. YALC also has a web search built right in, and transforms into a giant robot (nope, not at all).
Scoring happens in one of two (kinda 3) ways. A timer allows you to rack up an amount to be added/subtracted or you can turn off the timer and do it manually. You can also turn the timer all the way down and instantly change the current players score. Plus you can also just set the score to any arbitrary number you like.
With additional settings like Starting Life and Player Names what more could you possibly need (besides a transforming robot)?