:D

I've compared about 6 OCR apps, and this one seems to have the highest accuracy rate for the documents I scan. It isn't perfect (more like 80%), but that seems to be where the technology currently tops out for phone OCR.

If you like Professor Layton puzzlers, this will be quite enjoyable for you.

I love the annotation features and the ability to link calculations, and then change one number and have it redo them all. As for the "trig problems" others have mentioned, the default for the calculator is radians, so typing sin 45 will give the sin of 45 radians. You need to type the degree symbol after the 45 to get what those reviewers were expecting.

Play is fun. Sound keeps cutting out, though.