Even Free, It Lacks.

The app plays well and the price is right. But it does not save where you are in a puzzle if you stop for any reason. You just have to start all over again. On a personal dislike, I HATE noises and sounds in programs. There is no option to turn the noises on or off unless you just turn your phone volume down. Saving a puzzle and noise option should be there even on a free app.

PTB8 about Kryptograms