KeyStone: Winter Arc Habits

KeyStone is a Winter Arc habit tracker and goal tracker for your 90 day challenge: 3 habits, daily goals, streaks and level ups, one habit at a time.

Your Winter Arc, one habit at a time.
90 days. 3 habits. One by one. Miss a day and you fall back one step. Never back to zero.

KeyStone is your 90 day challenge tracker: it turns the challenge into a plan you can follow. Pick 3 habits, in order. The first starts on Day 1. The next one joins only after 10 straight days of the one before, so you never pile everything on at once.

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HOW YOUR ARC WORKS
✓ Pick 3 habits from a library of 40. Your first pick starts Day 1.
✓ KeyStone builds your 90-day plan: the date each habit joins, when each level starts, and the buffer days you have for misses.
✓ Press and hold to commit. Locked in. Day 1 is today.

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THE DAY'S ACTIONS, NOT A BLANK CHECKBOX
Every habit hands you specific daily actions, grouped by morning, afternoon and evening, with a short why for every action. Wake Up Early starts with "Set alarm 15 min earlier", not "wake up at 5". Tick every action and the habit is done for the day.

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4 LEVELS PER HABIT. LEVEL UP WHEN YOU EARN IT.
Foundation, Discovery, Practice, Mastery. A level opens only when you earn it: a streak of 3, 7, 14, then 21 straight done days. At each level-up you set the next level's actions: core actions, optional ones you choose, and your own. After Level 4 the habit is Mastered and moves to a weekly check-in.

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FIBONACCI STREAKS THAT BEND INSTEAD OF BREAKING
Streak steps follow the Fibonacci numbers: 1, 2, 3, 5, 8, 13, 21. Miss a day and you drop one step: 13 becomes 8. From day 2, a missed day never takes you back to 0. Several days away count as one miss.

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SEE WHERE YOU STAND
✓ Today: Day N of 90, your habits and today's actions
✓ Arc: all 90 days at a glance, done, partial or missed
✓ Live finish dates and buffer days that move when you slip
✓ A once-a-day mood check
✓ Share cards for done days and mastered habits
✓ Reminders for each habit at the time you pick, plus a 10 PM nudge if nothing is ticked yet

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THE SEASON COMES FROM THE DATE
Start between October and December and your arc is a Winter Arc. Start in January and it's a New Year Arc. Any other month, it's a 90-Day Arc. Same 90 days, same rules.

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40 HABITS IN 6 CATEGORIES
Health, Mind, Growth, Discipline, Social and Rest: wake up early, daily exercise, daily reading, phone-free morning, cold exposure, sleep routine, meditation, walk 8,000 steps, cut added sugar, eat the frog, digital sunset and more. Build good habits (33 of them) and break bad habits (7), with 919 actions in all.

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FREE TO START. PRO IS AN OPTIONAL SUBSCRIPTION.
Free: start an arc and take your first habit through all 4 levels to Mastered, with streaks, reminders, the mood check and share cards.
Pro adds every habit after the first, rest days (one planned day off in any 7, and your streak waits), up to 2 extra reminders per habit, Insights, progress photos, build your own habit and categories, plus themes and app icons.

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YOUR DATA
Sign-in is optional. Sign in with Apple, Google or email to back up your arc and pick it up on a new phone.

13 languages. Light and dark mode. No ads.

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Why KeyStone: many habit trackers hand you a list and a streak that resets. KeyStone is a habit tracker and habit builder made for a Winter Arc, a 90 day challenge or any season of self improvement: your goals join one at a time, every habit has 4 levels to level up through, and your streaks fall back one step instead of to zero. Build your morning routine and daily routine, keep your discipline, and lock in. When motivation dips, the plan is still there: today's actions, nothing more.

Pick your 3 habits. KeyStone hands you each day's actions and grows them with you, level by level.

Recent changes:
• Small fixes and improvements.