21days:healthy habits for kids
Co-parenting with Mom and Dad
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
"Ditch the nagging. 21 days of warm praise, fun coin rewards, and peace of mind for both you and your child."
"21 Days"—the exact amount of time it takes for the subconscious mind to recognize a new behavior and lock it in as a lifelong habit. 21days is a beautifully designed parenting scheduler where parents and children build and practice daily routines together.
From a visual focus timer that anchors easily distracted kids to a praise-coin reward system that maximizes a sense of achievement! We help your child stack "I did it!" moments, transforming daily family chaos into a proud, peaceful routine.
Why choose 21days?
1. Build Healthy Habits in 21 Days
Set and practice small yet essential daily habits with your child—like waking up on time, making the bed, or picking out tomorrow's clothes.
2. Collaborative Parenting for the Whole Family
Conveniently manage multiple children's routines and key schedules at a glance, and sync parenting updates in real-time with co-parents or caregivers.
3. A Dedicated Calendar for Your Child’s Schedule
Keep track of busy, easy-to-forget school and health events—like vaccinations, parent-teacher conferences, and required school supplies—with smart notifications.
4. A Visual Timer to Anchor Focus
With an intuitive, highly visual countdown, even easily distracted children can train themselves to stay fully focused on a single task for a set amount of time.
5. Praise Coin History for Lasting Motivation
Instantly reward routine completions and positive behaviors with digital coins. Watching their reward history grow gives children the ultimate sense of self-driven achievement.
Every day's small praise builds a child's rock-solid habit. We are here to help your children joyfully cultivate the inner strength to lead a self-driven life.
Start building your child’s lifelong habits today with 21days!
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
We’ve made overall improvements to the usability and stability of the Dashboard, Routines, Calendar, and Focus Timer.
We’ve added and improved the ability to set Praise Coin goals and display rewards.
We’ve added Japanese language support and improved the login screen layout based on the device’s language settings.
The developer, HANEUL KIM, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- User Content
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- HANEUL KIM
- Size
- 54.3 MB
- Category
- Productivity
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 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
9+
- 9+
- Contains
Advertising
Health or Wellness Topics
- Copyright
- © 2026 parentingnow