Let's Name Things Fun Deck by Super Duper Publications is a great app to practice vocab., categorizing, and thinking skills. This app helps children learn what things go into what category such as what makes you happy and name things that are yellow. It helps a lot with thinking skills that our children may have problems with. My kids have problems thinking outside the box and this app helps with that. They can practice thinking of things without seeing picture prompts like some apps will give. They have to think all on their own which is a great thing. There is 52 cards included and up to 5 players at a time may be listed. This is a great group activity since you can go around the circle and ask each child to name something different.