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user: bbrenner2 created: 2020-05-16 karma: 29 submissions: 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments Launch HN: Joon (YC W22) – A mobile game that teaches kids to build good habits 54 points | 59 comments