Excellent app with an unbelievable number of potential uses.

I've been using it for about two years and still I stumble on new uses all the time. The developer is extremely helpful, answering even detailed questions within a day or two.

I've had to take about a month or two until I got »into« the app, but it's well worth trying out a couple of things. The developer's blog has lots of ideas and tips – try them out!