The minimum iOS version required to play the Osmo Coding Games, the Genius Starter Kit games, Reading Adventure, Monster, Pizza Co., Detective Agency, and Little Genius Starter Kit games on iPhones is iOS 15.
For reference, here is a list of compatible iPhones:
https://support.playosmo.com/hc/en-us/articles/13173198135831-Which-iPhones-are-compatible-with-the-Coding-Games-
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