Sukoyaka - Baby Growth Chart
Height & weight vs WHO curves
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Sukoyaka is a gentle growth-chart app for babies and toddlers (0-3y), plotting height, weight, and head circumference against WHO standards.
"Is my baby's size in the typical range?" "What percentile are we in?" "Are we growing steadily?" Sukoyaka answers these everyday questions at a glance, with a friendly giraffe at your side.
■ Features
• One-tap entry for height, weight, and head circumference
• Automatic percentile against WHO Child Growth Standards (0-36m)
• Sex-specific curves at 3rd / 15th / 50th / 85th / 97th percentiles
• Overlay your records on top of WHO curves
• Home Screen widget for latest measurements
• Fully offline — data stays on device
■ Sukoyaka Pro
Upgrade to unlock unlimited history, multiple children, 3 premium themes, CSV export, and more.
Monthly and yearly auto-renewable plans are available.
Prices and subscription periods are shown on the App Store purchase sheet before confirmation.
Your Apple ID is charged upon purchase. Auto-renews unless canceled at least 24 hours before the period ends. Manage in Settings > Apple ID > Subscriptions.
■ Privacy
All data stays on your device. No account, no ads, no tracking.
■ Note
This app provides general guidance based on WHO Child Growth Standards. Consult your pediatrician for medical advice.
Terms: https://starcrown.co.jp/legal
Privacy: https://starcrown.co.jp/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Clarified the free growth-chart window so records older than 90 days are clearly unlocked with Pro.
The developer, Starcrown Inc, 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
- Starcrown Inc.
- Size
- 19.6 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 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 8 more
- English, Danish, French, German, Japanese, Korean, Portuguese, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Coffee Tip $0.99
- Sukoyaka Pro Yearly $17.99
- Sukoyaka Pro Monthly $2.99
- Cookie Tip $1.99
- Cake Tip $3.99
- Copyright
- © 2026 Starcrown, inc.