Good to use for individual practice.

This is not one of my favorite apps, but for free it is worth a look. This is not a game app but offers lots of practice. You can select easy, medium and difficult and a mode of only coins, or bills and coins. The downfall for giving this app to students who are struggling is that is doesn't offer support or guidance when the students gets a question wrong. After two wrong attempts, it just gives the student the answer and moves on to the next question. The coins are in color but it only offers the 'heads' face.