Habit Tracker: 30Day Challenge
Any goal, turned into a 30-day challenge.
- 30-day challenge grid
- Widgets & Control Center
- Heatmap & streak stats
- Offline, no account
Why it exists
A month is long enough for a habit to stick and short enough to actually finish, so every habit here gets its own 30-day grid rather than an open-ended list that only ever grows. It is drawn as ink on paper, with hand-drawn check marks and a grid that fills in, and it runs entirely on the device: no account, no cloud, nothing to sign into before you can write anything down.
Build your routine in seconds
- Start from ready-made templates: drink water, workout, read, meditate, journal and more.
- Or create your own with 60+ icons and a full colour palette.
- Flexible schedules: every day, specific weekdays, or X times per week.
- Drag and drop to reorder the list.
Stay on track
- Streaks that respect your schedule: rest days never break them.
- Per-habit reminders, plus an optional evening summary that only fires if something is left unchecked.
- Mark a habit done straight from the notification.
Check in without opening the app
- Home screen widgets in small, medium and large, with one-tap check-in.
- On iPhone, a Control Center control, plus Siri and Shortcuts support, so “Check off Drink Water” just works.
- On Android, a Quick Settings tile to check off a habit from the notification shade, and a long-press app shortcut to add a new one.
See your progress
- A GitHub-style yearly heatmap.
- Weekly bar charts and completion rates.
- Per-habit stats and perfect-day tracking.
- Confetti on perfect days, streak milestone toasts, and haptics on every check-in.
Private by default
No account, no cloud, no tracking; everything stays on your phone. Export a full JSON backup or a CSV of every check-in whenever you like; that is never gated behind a purchase. The backup format is the same on iPhone and Android, so your history moves with you if you switch.
Made to be usable
VoiceOver on iPhone and TalkBack on Android, colour-blind-safe design, light and dark mode, in nine languages.
Questions
- Why 30 days?
- A month is long enough to make a habit stick and short enough to actually finish. Every habit gets its own 30-day grid, and completing one ends with confetti, a recap of your stats and a shareable achievement card.
- Does it need an account or an internet connection?
- No. It is fully offline and private: there is no account and no cloud, and your data stays on your phone.
- Can I check in without opening the app?
- Yes. Home screen widgets in three sizes offer one-tap check-in, and you can mark a habit done straight from its reminder notification. On iPhone there is also a Control Center control and Siri and Shortcuts support; on Android, a Quick Settings tile.
- What is free and what needs Pro?
- Free forever: three habits, daily schedules, streaks, the 30-day grid, templates, a reminder and a small widget. Pro unlocks unlimited habits, weekday and times-per-week schedules, all icons and colours, unlimited reminders, the full stats charts, and the medium and large widgets plus the Control Center control on iPhone or the Quick Settings tile on Android.
- Can I get my data out?
- Yes, and it is never gated. Export a full JSON backup for import later, on either iPhone or Android, or a CSV of every check-in for your own analysis.
Try it in the browser
Free, nothing uploaded, no account — and a fair way to find out whether this is the kind of tool you want on your phone.
Guides
- 30-day challenge ideas that survive day nineThirty 30-day challenge ideas for health, focus, skills, money and people, each with the small version that keeps a bad day from ending the month.
- Paper habit tracker vs an app: which actually worksPaper wins on friction and visibility; an app wins on memory and evidence. Here is what each is better at, and how to make an app behave like paper.
- How to track a habit you don't do every dayThree times a week on a daily grid means every off day reads as a miss. Here is how to pick between fixed days, a weekly quota and an interval, and fix the streak.
- Habit tracker vs to-do list: which one holds whatA to-do list holds things that get finished; a tracker holds things that get repeated. Put a habit on a list and every missed day becomes a debt you cannot pay.
- How many habits should you track at once?Fewer than you want to. The limit is on habits still in progress, not habits you have. Five tracked habits is how people lose four in one bad week.
- Habit stacking: how to attach a new habit to one you already haveAfter I [existing habit], I will [new habit]. Here is what makes an anchor reliable, why one habit per anchor matters, and how to diagnose a stack that stopped.
- How to restart a habit after breaking itA missed day costs almost nothing; the response to it costs the habit. Here is how to tell resuming from restarting, and what actually broke.
- How long it actually takes to form a habitThe 21-day rule comes from a 1960 book about plastic surgery. The research says a median of 66 days, with a range of 18 to 254. The range is the useful part.
- Habit tracking without notifications: a quieter methodReminders stop working the moment you learn to swipe them away. Here is how to build habit tracking that runs on placement and review instead of alerts.
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