This app for the iPhone/iPad is designed for kids ages 2.5+ to help develop the concept of opposites. Two levels are unlocked in the FREE version with 10 additional levels available if you purchase the full version. Each level has 4 sets of opposites to match. Kids find 2 pictures that show opposites and drag them into the box. As they do so, the written word appears underneath. If correctly matched, they disappear making the each choice simpler. You can add your own voice (or even better, your child’s voice) reading the words. This option is important for younger kids who cannot read the words plus it helps them make the text-to-print connection. Before adding sound however you’ll need to make sure you know what word will appear under the picture because that information in not on the recording page. I had trouble recording 4 out of the 16 words in the first 2 levels. The app would freeze and have to be restarted. I think young children would really enjoy hearing themselves “read” the words to go with the pictures so I am hoping that the developer can fix the bugs.