Lathoa launches a kids' math app that gets answers wrong on purpose
What happened
On September 30, 2026, the Hacker News front page covered Lathoa, a math app for children aged 10–14. Its AI math partner Errol deliberately makes mistakes in the solution steps, and the child has to find the wrong step and explain the reason in their own words. Mistakes come in three levels — Obvious, Sneaky and Expert — matched to age and skill; kids level up by catching errors, going from Rookie to Inspector to Detective to Sherlock. The report only describes the product mechanics, with no follow-up.
Written by AI from the coverage · updated 44 minutes ago
Coverage
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- Hacker News front pageShow HN: Lathoa, a math app for kids where the AI is wrong on purpose
Lathoa 是一款面向 10–14 岁儿童的数学 App，其 AI 数学伙伴 Errol 会故意在解题步骤中出错，让孩子找出错误步骤并用自己话解释原因。错误分 Obvious、Sneaky、Expert 三档，按年龄和水平匹配，孩子通过抓错升级 Rookie→Inspector→Detective→Sherlock。
Heat over time
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