Systems Atlas Project
Kantetsu 貫徹
Free on the App Store · iPhone, iPad, MacYou write the rules. Once a day, you mark whether you kept them.
It does not nag, notify, or track anything while you live the day. You look back at yesterday and answer honestly. That is the whole loop.
Not derived from the map · built from a gap noticed directly
The loop
Three things happen, and nothing else does.
Nothing is measured while the day is happening. No sensor, no timer, no background process — you are the only source. That is the point, not a limitation.
Write the rules
Your commitments, in your own words. Each one runs every day, or only on the days you choose.
Look back at yesterday
Mark each rule kept or broken. The mark is a judgement you make, not a number the app produces.
Leave one note
140 characters on how the day felt. Not a journal — a margin note short enough that you will actually reread it.
Strict by design
Most habit apps forgive a missed day. This one does not.
A kept run counts consecutive scheduled days. Miss a day you were due, and the run goes to zero. No freezes, no repairs, no grace period. A streak that forgives you is not measuring anything.
Today stays blank until you log it — not missed, just not yet reviewed.
In the app
Enough to be honest with yourself, and no more.
Rules and schedules
A rule runs every day, or only on the days you pick — exercise on Tuesday, Thursday, Saturday. Each rule tracks its own current streak, best streak and adherence rate.
Schedules that lock
Once a rule has been logged, its schedule locks. Changes apply from today on; past streaks are never rewritten. Titles stay editable, so typos are fixable.
Calendar
Every day at a glance: kept, broken, or not yet reviewed. Filter to a single rule to see how you have held one specific commitment over time.
Insights
Per-rule kept rates over the last 30 days and all time, weekly kept-rate bars, and an app-wide chart of what fraction of your rules you kept each day with a weekly average drawn over it.
Archive
Retire a rule and it keeps its history. Reveal archived rules whenever you want to look back at what they recorded.
Local-first, with optional sync
The app works entirely without an account. If you want your history on another device, an account carries it — a manual upload or download, your choice of direction, never a silent merge.
Deliberately absent
What a quiet app leaves out.
- No notificationsIt never nags. Reviewing yesterday is itself a habit you keep or do not.
- No live trackingNothing runs in the background.
- No points, badges or levelsThe number is the adherence rate. Nothing decorates it.
- No streak freezes or repairsA broken run is a broken run.
- No feed, friends or leaderboardThere is nobody else in the app.
- No advertisingNot now and not later. Systems Atlas does not do advertising.
On the name
貫徹
Kantetsu — resolve carried through to the end. 貫 is to pierce or carry through; 徹 is to penetrate thoroughly. Not stopping until it is done.