Hands down best tracker
Best baby size tracker app out there. Daily size comparisons to objects other than fruit. No ads or unnecessary features - just fun updates
Free
In-App Purchases
About
Track your baby's development daily with size comparisons, estimated cell counts, and gestational age. Input ultrasound measurements to adjust predictions. This app provides fun, informational estimates based on population averages.
✓Daily size comparisons
✓Estimated cell count
✓Gestational age tracking
✓Custom ultrasound measurement input
✓Population average data
Show original description
What's New in How Big is Baby Today?
2.0
June 28, 2026
Version 2.0 • New feature - Track multiple babies! Add as many as you like. • Refinements and fixes throughout. Thanks for using the app!
More3
In-App Purchases
$0.99
Small Tip
A small thank you to support the developer.
User reviews
FAQ
Does How Big is Baby Today? have ads?
No, How Big is Baby Today? is ad-free, providing an uninterrupted experience for users.
How accurate are the size estimates in How Big is Baby Today?
The app uses population averages (50th percentile) based on published fetal growth charts. These are estimates for fun and information only and not medical advice.
Can I enter my own ultrasound measurements into How Big is Baby Today?
Yes, you can enter real measurements from an ultrasound, and the app's predictions will adjust to your baby's specific growth.
What devices is How Big is Baby Today? available on?
How Big is Baby Today? is available on iPhone and iPad devices.
How often is How Big is Baby Today? updated?
The app was last updated on June 18, 2026, with version 1.3. Updates typically occur to improve features and reliability.
What is the age rating for How Big is Baby Today?
How Big is Baby Today? has an age rating of 4+, making it suitable for a wide audience.
What kind of size comparisons does How Big is Baby Today? offer?
The app provides a fresh list of size comparisons with new categories each day, offering a variety of relatable comparisons for your baby's size.
Is How Big is Baby Today? free to download?
Yes, How Big is Baby Today? is free to download and use, with optional in-app purchases available.