Product design · Systems & scoring
100 / 10
One hundred days on. Ten days off. Then again.
Overview
100/10 is a season planner and daily check-in built around eight compounds, six stats and one honest number. It doesn't congratulate you. It tells you what your form is and lets the arithmetic speak.
The structure is borrowed from sport, not from productivity. Every serious athlete lives inside a season — pre-season, mid-season, the run-in — and where they are decides what today costs. There's a training block, a coach who tells the truth, a stat sheet nobody can argue with, and an off-season that is scheduled rather than shameful.
100/10 hands that structure to a person who isn't a professional anything. A hundred days of deliberate work, then ten to fifteen off, then again — long enough that a bad week can't define it, short enough that you can see the end from the middle.
01 — The thinking
Form, not motivation.
Footballers talk about being in form or out of form, and everyone understands it without a lecture. Form isn't how badly you want it — it's what the last few weeks actually produced. So the scoring model had to be honest enough to say so.
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Diminishing gains
Stats grow as a fraction of the distance left to ninety-nine, so early progress is quick and the last stretch has to be earned.
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Flat penalties
Miss a stat entirely and it drops a flat eight, no matter how high it had climbed. Height buys no immunity.
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Capped streaks
Streaks multiply the whole score, capped at 1.20×, because consistency compounds in a way heroic single days never do.
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Compounds, not checkboxes
Nobody does one rep and calls it a session. Elements bundle into compounds that live or die together — three out of four is an incomplete session, and it doesn't keep the streak alive.
Information architecture
The structure is fixed; the contents are not. A season is defined before it starts — the compounds, the elements inside them, the six stats and what each is worth, the phases, the weekday anchors, the objectives. Two people can run the same system and share almost nothing on screen.
A musician's season leans hard on Craft. Somebody rebuilding after an injury weights Body and Order highest and keeps compounds small enough to actually finish. A person trying to get out of their own way weights Imposition — cold emails, applications, posting the work — because for them the hard thing was never the effort, it was the exposure.
Weighting is the honest part of the setup: it forces you to say out loud what matters this season, and to accept that the thing you weighted at twenty-two per cent will punish you hardest when you skip it.
02 — Presentation
Season 01 deck
Twelve slides on the season model, the form arithmetic, the compound system and what a configured season actually looks like.
Outcome
What was produced. A season deck specifying the full model — phases, compounds, six weighted stats, the form formula with its growth curve, penalty and streak cap — written precisely enough to implement without further decisions.
What I learned. The design work was almost entirely in the arithmetic. Every scoring rule is a value judgement about what deserves credit, and getting those wrong makes an app that flatters you into quitting.
What could be improved. Season setup is heavy — defining compounds, elements and weights before day one is a real barrier. It needs templates that get you to a defensible first season in minutes.
Where it goes next. Building the daily check-in and running one real hundred-day season against it. The model only earns trust if it survives a full cycle.
Links
- Season 01 deck 12 slides
- Live app Not yet built