Chosim: 21-Day Habit Keeper
Build one routine that sticks
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
At the time you set, last-night you wakes you up on your Lock Screen. Tip tiny wins like dominoes, each within 10 minutes, and fill your 21-day gauge toward 100%.
Plenty of apps break a goal into small steps. Chosim adds a time and a voice: at the moment you set, last-night you wakes you up.
Pick one goal and one target time. Chosim lines up tiny wins before it like dominoes, five minutes apart. Tip each one over within 10 minutes, and your 21-day gauge climbs toward 100%.
■ LAST-NIGHT YOU WAKES YOU UP
· Each night, write one line to tomorrow's you.
· The next day at the set time, "Last-night me" sends that line to your Lock Screen.
· Tap "Done" right from the notification. No need to open the app.
■ DOMINOES YOU TIP WITHIN 10 MINUTES
Goal: Wake up early · Target time: 6:30 AM
6:15 Turn off the alarm and sit up → 6:20 Open the window → 6:25 Drink a glass of water → 6:30 Wake up early
· Each step fills only if you "Hold to complete" within 10 minutes of its time.
· A missed step stays at 0.
· You can edit the dominoes to fit your day.
■ 21 DAYS = 100%
· The whole 21-day journey is 100%. A full day adds about 4.8%.
· Each day's share is split across the dominoes. They start small and grow, and the goal itself counts the most.
· Even after all 21 days, any missed step keeps you below 100%. That's what makes 100% mean something.
· Up to three rest days per goal. A rest day fills that day's share.
■ THE RULES
· If you don't respond to notifications for three days in a row, the journey stops.
· Up to three goals at a time.
· When you finish, read back every line you sent yourself over the 21 days.
■ PRICING: A SMALL PRICE FOR WILLPOWER
· Try your first habit free for two days.
· To keep going, pay once per goal (21 days). It's not a subscription.
· Another 21 days works the same way.
■ YOUR DATA STAYS ON THIS DEVICE
No account needed. Your goals and notes are stored only on your phone.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New: tiny wins now line up like dominoes before your target time. Hold to complete each within 10 minutes and fill your 21-day gauge toward 100%. Now in 9 languages.
The developer, junhyeong Park, 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
- junhyeong Park
- Size
- 43.5 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.
- iPhone
- Languages
English and 8 more
- English, French, German, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- 이틀 무료 체험 (2-Day Trial) $0.00
- 목표 하나 만들기 (21일) $0.99
- Copyright
- © 2026 ARCHE