Teach Pepito and master any topic
Pepito is an AI student who knows almost nothing. You explain a topic out loud, he asks why until he gets it, and his questions show you exactly what you have not learned yet.
- Free to start
- Spanish and English
- Android and iOS
HOW IT WORKS
Three steps, five minutes
A session is one topic and one conversation. Nothing to read first.
Screenshot: choosing topic and level Pick the topic and the level
School, university or self-taught. Pepito adjusts what he knows and what he asks.
Screenshot: explaining by voice Explain it with your voice
Speak or type. Pepito listens to the whole explanation before answering.
Screenshot: Pepito's questions Answer his why questions
Every doubt of his points at a hole in your explanation. Closing them is the learning.
THE PROTÉGÉ EFFECT
You learn more when you have to explain it
Explaining out loud forces you to put what you know in order. When someone asks why, the gaps show up on their own. Pepito always asks.

“If you cannot explain it to me, you have not learned it yet.”
FEYNMAN CHALLENGE
Explain the topic two ways to cement it
- Explanation for a 5-year-oldSimplify as much as you can with everyday analogies.
- Explanation for an expert teacherTechnical rigour, formal structure and precision.
THE ECONOMY
Brains, energy and streak
Three counters, all earned by teaching. Nothing is required to keep learning.
Brains
The in-app currency. Earned with good explanations, spent on Feynman hints, gap detectors and student skins.
Energy
Five sessions a day. It refills on its own, or a 30-second ad brings one back when the day runs short.
Streak
Days in a row teaching. The streak shield keeps it safe on the day you cannot make it.
FOR FAMILIES
Built so parents can relax
No chat with strangers. The only conversation is with Pepito.
Ads only when the child chooses to watch one to refill energy.
Tutor Pro at $4.99 a month removes the limits and the ads.
Same app in Spanish and English, switched in one tap.

Pepito already has questions
Pick a topic you are studying this week and explain it to him. It takes five minutes.