Lesson Loop, the one-page version
The idea. At the end of a lesson, the coach has the best picture of the player they will ever have. Then the next student walks on court and it fades. Lesson Loop captures that picture at the moment it exists: the coach records a two- or three-minute voice memo, an agent turns it into a lesson note in the player's own vault, the player reads it and adds what happens in their games, and the next lesson, with the same coach or a different one, starts from a two-minute briefing instead of from memory.
Padel is the worked example. The founder plays a lot and has taken lessons from several coaches in a few days, each seeing something different, none of it kept together. The loop fits any teacher with students: tennis, golf, music, languages, personal training, driving.
Phase one needs almost nothing. A voice memo in Claude or ChatGPT, an agent to process it, and a vault to keep it in. Until that works with real coaches and players, nothing else should be built.
What changes.
- The player gets three things to take into the next game, in writing, instead of an hour of instructions to remember.
- Games reach the coach, through match notes and short clips.
- Every coach, in any club or country, starts from everything every other coach saw.
- The coach thinks more strategically, because what they say is kept.
- The coach gains income beyond the hour: remote reviews, drill plans, follow-ups, content, and direct relationships with players.
The business. Paid on demand, with no subscription. Players buy credits and spend them on processing: about 20p for a lesson note, about £1 to process a short clip. Coaches price their own remote services, and the operator takes a share. Clubs can include notes in the lesson price. Every number is a hypothesis.
Why vaults. The record belongs to the player, in a data vault whose key they hold. The app lives in a separate vault shared by everybody. Coaches write through a write-only lane and read with a key the player gives them. The record travels with the player, and nobody else can read it, including whoever hosts it. Key management is the one hard part.
Reading order
01-the-idea.md: the knowledge that exists for five minutes.02-phases.md: capture first, then the player writes back, then many coaches, then new revenue.03-architecture.md: voice, agent, two vaults, lanes and keys.04-what-exists-today.md: every component, and where it is documented.05-business-model.md: credits, coach services, clubs, and the numbers.06-go-to-market.md: coaches first, the founder's own lessons, clubs.07-execution.md: the first ninety days.08-beyond-padel.md: the same loop for other teachers.09-risks.md: consent, children, clubs, errors, keys.10-open-questions.md: what we do not know.