This is a great app for a 2 year old. My son loves it!
Good:
1. A good collection of puzzles. And more gets added with every update.
2. Some of the the puzzles gradually reveal more items as the puzzle is being built. That way, you can build a more complex puzzle without it being too overwhelming from the start.
3. The animation at the end of completing a puzzle is a great reward! For example, in the train puzzle, the train starts to move after it is completed and then a second (and more complex) train rolls in!! A great treat for any kid who loves trains!
4. After a couple of failed attempts to drop the puzzle piece in the correct position, the app provides guidance on where the piece should go. That works very well!
5. The preference/setting for the app is not within the app itself. That means that you dont have to worry about your kid hitting the wrong button and adding/buying new options accidentally!
Not so good:
1. This app is meant for the iPhone and the iPad, so there is a size button on the bottom right. My sons wrist keeps hitting that accidentally and it really frustrates him when the puzzle suddenly changes size on him! It would be great if they were separate apps.