Tsuzuku: Habit Tracker & ToDo
Streaks, routines and widgets
$1.00 · Designed for iPad. Not verified for macOS.
Keep as many habits as you like. Any mistap is undoable, a day you forgot can be filled in later, and your history never leaves the device.
No cap on tasks. Every mistap is undoable. Your history never disappears.
A habit tracker and a to-do list in one screen, bought once.
No ads, no in-app purchases, no subscription.
■ There is no limit on how many tasks you keep
Not six, not twenty-four. No pages to swipe through either — everything due today sits in one list. Morning routines, work to-dos and weekend chores can live in the same place.
■ A mistap is always undoable
An Undo button appears at the bottom of the screen the moment you tick something. Noticed later? Swipe the row left to take one back. No shaking the phone, no hidden gestures to memorise.
■ Fill in the days you missed
Tap a past date in the strip at the top and the whole screen moves to that day. You can also open a task and tap a date in its monthly calendar. Set a start date in the past and an existing streak carries over from day one.
■ A half-done day counts as half
If your goal is three times a day and you managed two, the app records two. It does not throw the day away. Going over the goal is recorded too.
■ Built so your history does not vanish
• Everything is stored on your device. No account, no sign-in
• A backup is taken automatically once a day, keeping the last seven
• Export and import a file whenever you like — that is how you move to a new phone
■ Log straight from the Home Screen
Tap the ring on the widget and it is recorded. The app never opens. Small, medium and large Home Screen widgets plus a Lock Screen widget.
■ Repeats that match how you actually work
• Every day
• Chosen weekdays (Mon / Wed / Fri and so on)
• N times a week — any days, as long as you get there
• Every N days, whatever interval you want
• One time only, which leaves the list once done
■ Reminders, only as many as you want
Give a single task as many times as you need — morning, noon and night for medication, for example. One switch in Settings stops every reminder at once. We ask for notification permission only when you add your first reminder.
■ Progress you can actually see
• Current streak and your best run
• Completion rate over the last 30 days
• Lifetime totals, in times or in hours
• A monthly calendar large enough to read
Today never breaks your streak. A streak only ends after a scheduled day passes unmet. This app is not built to rush you.
■ For night owls
Move the start of a new day to 3:00 or later, and you can still tick off "today" after midnight.
■ What this app does not do
• No ads
• No in-app purchases and no subscription
• No endless review begging — we ask once, at a milestone
• No data collection. Nothing is sent anywhere
■ Before you buy
This version has no cloud sync and no Apple Watch app. Your records live on one device. To move to a new phone, export a backup file from Settings and import it on the other side. We would rather leave sync out than ship the version that loses your data.
One purchase. That is the whole story.
Feedback and bug reports: yamaguchi@tokyo357.com
Support: https://tokyo357.com/support
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Now available in English, German, French, Spanish and Italian.
• The whole app, including reminders and the widget, follows your device language
• Dates, weekdays and the calendar use your local formats
• Wider iPad screens now keep text at a readable width instead of stretching edge to edge
Something not right? Tap Send feedback in Settings and tell us.
The developer, Daisuke Yamaguchi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Daisuke Yamaguchi
- Size
- 2.5 MB
- Category
- Productivity
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
English and 5 more
- English, French, German, Italian, Japanese, Spanish
- Age Rating
4+
- 4+
- Copyright
- © 2026 Sauna Inc.

