Lathoa

Lathoa is a math companion for kids aged 10 to 14. Errol the AI solves problems step by step, but one step is always wrong. Kids scan the working, tap the bad step, and explain in their own words what Errol got confused about. Every challenge follows the same rhythm: Errol solves it, the kid reads each step, highlights the mistake, and writes why it breaks. Then the real solution appears side by side and the kid ranks up. Errors come in three tiers (Obvious, Sneaky, Expert) matched to age and skill. The sneakier the catch, the bigger the rank-up. Errol reacts in real time: his confidence drops when caught, and his face crumbles. Cases cover arithmetic, fractions, ratios, pre-algebra, and early geometry, all aligned to Common Core 4 to 8. Reading comprehension and basic logic are next. Three cases a day free, with no card needed for the seven-day parent plan trial. No ads, no data harvesting, COPPA-respecting from day one. Works in any browser, on iOS, and on Android.