Mental Leap Checker
Baby Mental Leap Checker
Free · Designed for iPad. Not verified for macOS.
**Understand Your Baby's Growth with Confidence**
Is your baby fussier than usual? It might be a “Mental Leap.”
Suddenly crying more often?
Restless sleep or frequent night waking?
Clingy behavior without signs of illness?
These might not be problems — they might be signs of a big developmental step.
With Mental Leap, you can track your baby’s mental development and better understand the challenging yet beautiful journey of early childhood.
**What You Can Do**
- Register your baby’s birthdate or due date easily
- Manage multiple babies at once (great for siblings or twins)
- Get notified when your child is in a “leap” period
- Learn what each leap means and how you can support your baby during that time
- Simple, intuitive interface – designed for busy parents
**What is a “Mental Leap”?**
Babies experience about 10 major mental developmental leaps before 20 months of age.
These periods are often marked by changes in behavior: more crying, clinginess, sleep changes, or fussiness.
It may seem like something is wrong — but it’s actually a sign of progress in brain development.
Knowing when a mental leap is coming can help you prepare, respond with care, and reduce stress.
**Perfect for:**
- First-time parents who want peace of mind
- Parents noticing unusual behavior in their baby
- Those interested in baby development and psychology
- Families with multiple young children
- Anyone looking for a clean, reliable, and private baby tracker
**Simple, Lightweight, Reliable**
- No complex sign-up process
- Works offline (for most features)
- Lightweight and battery-friendly
**Privacy You Can Trust**
- All data is stored only on your device.
- No data is shared externally. No ads. No personal accounts needed.
Your baby’s growth is your private journey — we keep it that way.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
This update adds growth tracking and many other new features.
■ New
- Growth tracking: record height and weight and view them as charts, with WHO growth standard curves (P3/P50/P97) for comparison
- One-tap sleep logging with "Fell asleep" / "Woke up" buttons
- Track multiple sleep sessions per child
- Sleep alerts are now based on total daily sleep time
- Memo search now supports date-range filtering and sorting
- Added Chinese (Simplified & Traditional) and Korean
■ Improvements
- Refreshed design with new animations
- Better colors in dark mode
- Optimized layout for tablets and larger screens
- Edit forms now warn before discarding unsaved changes
- Retry directly from error screens
■ Fixes
- Fixed pull-to-refresh not working on the home screen
- Fixed some untranslated text
Thank you for using the app — feedback is always welcome!
The developer, Akatsukido Co., Ltd., 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:
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Akatsukido Co., Ltd.
- Size
- 84.3 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Akatsukido Co., Ltd.