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10 Great Fourth Grade Apps You Need Now

7 of 10

Gesundheit!

This adorably disgusting app teaches complex logic and strategy, and even sneaks in a positive message about diversity.

Welcome to life as a little green pig. You’re icky and sticky and the other pigs don't want to play with you. But your "outcast" character is the only one that can save the day—by completing a maze before monsters destroy you. Your secret weapon? Snot.

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Get it on iTunes!