It is a Nonogram type puzzle, which we've seen many times before. One nice feature: you can get a hint about where one of the pieces goes. Another nice feature, which I believe is unique among the Nonogram type puzzles: a randomizer. If you're stuck, you can push the randomizer button and that will scramble the tiles while preserving the ones that are correctly marked. It's very cool.
I played/solved about 20 levels. On more than 1 occasion, there were multiple solutions. There's a lot of interesting graphics & bells & whistles. If you've been following this blog, you know that I always deem that as secondary to the actual puzzles. In this case, it takes too much time to go from 1 puzzle to another. But I understand and appreciate that others would like that. The credits show that a lot of people worked on this.
Did I mention that Grid Puzzle the Brain Training Game is free?