To be fair, it does not do much. But what it does, it does very well. I have looked at (and even bought) a lot of weight lifiting apps, and have not found one I liked as much as this; and I think he'll continue to develop it (I sent in a bug note, and he personally replied, so... that's cool. And then he fixed it ASAP!)
Anyway, it's a super easy way to enter your lifts. There are no analytics, but it can output to CSV, so you can do your own. It beats the heck out of an excel sheet....