Best to-do app for OS X and iOS !!!

For me this is the best to-do app I ever used. Simple to use, but with a lot of features. Probably I won’t use OS X version as often as iOS, but I bought it just to support the developer. I was lucky to download iOS version at a time it was free, so 25 euro for both versions is not much.

Wrony about 2Do, v2.1