Cairnday: Habit Tracker
Daily streaks & routine goals
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Cairn is a calm habit tracker. Six habits sit on a page as stones: press and hold one to log it, and watch the ring close and the streak grow. One stone a day.
MADE FOR REAL DAYS
- Daily, weekly or monthly goals, several times a day or a few days a week
- Habits you want to do less of, with a limit you can stay under
- Timed habits: meditate 10 minutes, read 20
- A late night still counts for the day before: choose when your day starts
- Travel keeps your streak: a log counts for the day it was made
- Pause a habit, or take a vacation from all of them, and streaks wait for you
- Forgot to log last night? Log for yesterday, from the habit or from the morning reminder
- Tap a stone for its streak and calendar; fix any past day
APPLE HEALTH
Cairn works with Apple Health. Add a habit from the Apple Health section and it completes itself from your Health data: steps, workouts, exercise and stand minutes, distance, flights, active energy, sleep, mindful minutes, water, caffeine and nutrition, weight, heart rate, blood pressure, toothbrushing and handwashing. Every Apple Health habit is labeled Apple Health on its stone, and Settings lists what each one reads. Water, caffeine and mindful sessions you log in Cairn are recorded in Apple Health too. Cairn asks only for what a habit needs, when you save it. Your Health data stays on your device: it is never sent to us, never in analytics, never stored in iCloud by Cairn.
REMINDERS AND WIDGETS
Smart reminders that learn when you usually do a habit, or reminders at the times you choose, that stop once it is done. Log one, Log for yesterday or Snooze straight from the notification. Widgets for the Home Screen and, with Cairn Unlock, the Lock Screen; on iOS 17 and later, tap a widget to log.
STATS
Current and best streaks, completion rates, days by weekday and by hour, for one habit or the whole page.
YOURS
No account and no ads. iCloud sync keeps your iPhone and iPad in step, and only ever adds: a device that was offline never overwrites anything, and a deleted habit stays deleted. A backup every day, JSON and CSV export, and import.
CAIRN UNLOCK
Your first page of six habits has every kind of habit and every rule. Cairn Unlock is a single purchase, never a subscription, shared with your family: four pages for 24 habits, every widget including the Lock Screen, stats for 90 days, the year and all time, and every palette. Your data, sync and export are never locked.
iPhone and iPad, iOS 15 and later.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Settings has three new rows: Rate Cairn, More from Nubeo with our other everyday apps, and Follow Nubeo Studio. Small fixes and improvements.
The developer, vuong cuong, 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 Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- vuong cuong
- Size
- 7.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Cairn Unlock $5.99
- Copyright
- © 2026 Nubeo Studio
