21 Days: Habit Builder
2 minutes a day for 21 days
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Build a new habit in 21 days, starting small enough that you'll actually do it.
Big goals are easy to drop. 21 Days starts you with a tiny action, about 2 minutes a day, and gives you a reason to come back tomorrow: a streak you don't want to break and a tree that grows with every check-in.
• Pick a habit and check in once a day
• Watch your seedling grow into a tree as you keep going
• Take a rest day when you need one, without losing your streak (2 per run)
• Forgot yesterday? You can still check it in today
• Medals on days 7, 14 and 21
• Clear stats: current and best streak, success rate, last 7 days
• Share a card when you finish your 21 days
• Morning and evening reminders at times you choose
• Your data stays on your device. No account needed.
• In English and Thai
FREE
Up to 2 habits in progress at a time (finished habits don't count).
21 DAYS PREMIUM
Up to 10 habits in progress, a reminder time for each habit, and Home Screen widgets.
Premium is an auto-renewing subscription, billed monthly or yearly. The price is shown in the app in your local currency before you buy. Payment is charged to your Apple ID at confirmation of purchase. The subscription renews automatically unless it is turned off at least 24 hours before the end of the current period. You can manage or cancel it in your App Store account settings.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://teezer.cloud/legal/21days/privacy/
Start today, and let's get to day 21 together.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Version 2.0 is rebuilt from the ground up as a native iOS app: smoother and faster. Your habits, history and Premium subscription carry over.
• Check in faster: from widgets, Control Center, Siri and the "Done" button on reminders
• New Lock Screen widgets, and a widget that shows the habit you pick
• Widgets update right at midnight and support Dark Mode
• Bug fixes and improvements
The developer, Phaisan Thauaonsamut, 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:
- Purchases
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Phaisan Thauaonsamut
- Size
- 18.5 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. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Thai
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- Copyright
- © 2026 Phaisan T.