Show HN: Lathoa, a math app for kids where the AI is wrong on purpose

Lathoa is a math app for children aged 10-14, featuring a robot named Errol that intentionally makes mistakes in solving math problems. Users must identify the incorrect step and explain the error to earn XP, with speed also contributing to points. The app avoids direct LLM interaction and incorporates robust evaluation steps to prevent inconsistencies and prompt injections. The creator is seeking feedback from educators on whether identifying others' mistakes offers unique learning benefits compared to solving problems independently.