Tiny Baby Tracker vs The Wonder Weeks
These two apps do different jobs. The Wonder Weeks tells you when your baby's next mental leap is coming and what new skills to watch for, while Tiny Baby Tracker logs the daily feeds, diapers, sleep, and pumping.
You can use both. The Wonder Weeks helps explain a fussy week, and Tiny Baby Tracker shows when baby last ate, which side, and how many wet diapers so far today.
Which one should you use?
Pick The Wonder Weeks if
you want a leap calendar built from your due date, a heads-up before a fussy stretch, and play ideas that match each stage. It's a guide to development, not a feeding log.
Pick Tiny Baby Tracker if
you need to know when baby last ate, which side to start on, and how the day is going. It is free, and every caregiver gets their own sign-in. Use it alongside The Wonder Weeks.
Is The Wonder Weeks app free?
The download is free, and the full app runs on a subscription. Neither store listing spells out which parts are free and which are paid.
The US App Store lists several subscriptions, from $1.99 for one month up to $34.99 for 24 months. Google Play lists in-app purchases from $4.99 to $34.99. The App Store also sells eBook chapters for $0.99 each.
Some Google Play reviews say the app used to be a one-time purchase and is now a subscription, and that some of the information stays locked without one.
The Wonder Weeks vs Tiny Baby Tracker, side by side
| The Wonder Weeks | Tiny Baby Tracker | |
|---|---|---|
| Price | Free download, subscriptions from $1.99 on the App Store | Free |
| What it is for | Mental leaps, new skills, and play | Daily feeds, diapers, sleep, and pumping |
| Download | App Store or Google Play | None, opens in your browser |
| Leap calendar and alerts | Yes, built from your due date | No |
| Play ideas | 77 games tied to each leap | No |
| Skills checklist | Yes, for each leap | No |
| Diary with photos | Yes | No |
| Forum, videos, and polls | Yes | No |
| Left and right feeding timer | Not listed | Yes |
| Bottles, pumping, and diapers | Not listed | Yes |
| Partner sharing | Links with one partner's app | Invite link, no caregiver limit |
The Wonder Weeks prices and features are from its App Store and Google Play listings, checked October 2026. Its website couldn't be reached, so anything only it lists is left out.
What The Wonder Weeks does better
A calendar of mental leaps
The app maps 10 mental leaps in the first 20 months, based on your due date, and sends an alert before each one starts. One App Store reviewer says the early warning makes fussy weeks less stressful.
Play ideas for each stage
It has 77 playtime games tied to the leaps, plus the signs and new skills to watch for. Tiny Baby Tracker doesn't have any development content.
A diary and a community
You can keep a diary with photos and read a forum, videos, and polls from other parents. Tiny Baby Tracker has no notes or photos.
A well-known book behind it
The app is based on The Wonder Weeks book. It has a 4.8 rating from about 122,000 ratings on the US App Store.
What Tiny Baby Tracker does better
The daily log
Tiny Baby Tracker logs breastfeeds with a left and right timer, bottles, pumping, diapers, and solids. The Wonder Weeks store listings don't list any of these.
Free, with no subscription
Every feature in Tiny Baby Tracker is free. There is no trial and no paid tier to sign up for.
Every caregiver can join
The Wonder Weeks links with one partner's app. Tiny Baby Tracker sends an invite link, each person signs in with their own email, and there is no limit on caregivers.
A report for the pediatrician
Print or save daily totals for the last 7 or 14 days, so you have real numbers on feeds and diapers at the next checkup.
Questions about The Wonder Weeks and Tiny Baby Tracker
Does The Wonder Weeks track feeding and diapers?
Its store listings don't list feeding, pumping, or diaper logs. It is a leap and development app. For those, you'd pair it with a separate log like Tiny Baby Tracker.
How much does The Wonder Weeks app cost?
The download is free and the full app needs a subscription. The US App Store lists options from $1.99 for a month up to $34.99 for 24 months. Tiny Baby Tracker is free.
Can I share The Wonder Weeks with my partner?
Yes. Its Google Play listing says you can link the app to your partner's app. In Tiny Baby Tracker, sharing is free, and any number of caregivers can join with their own email.
Does Tiny Baby Tracker show leaps or milestones?
No. It doesn't have leaps, milestones, or development content. It logs feeds, diapers, sleep, pumping, solids, and a daily Vitamin D reminder.
Is The Wonder Weeks on Android?
Yes. It is on Google Play and the App Store, for iPhone, iPad, and Mac. Tiny Baby Tracker runs in any phone browser, so it works on both too.
Can I use both apps?
Yes, and they don't overlap. The Wonder Weeks helps you understand what your baby is going through, and Tiny Baby Tracker keeps the day's feeds and diapers in one place.
Other apps parents compare
Still deciding? See how Tiny Baby Tracker stacks up against BabySparks and CDC Milestone Tracker, or read every baby tracker app comparison in one place.
Try it on tonight's feeds
Sign in with your email and log your first feed in under a minute. Share it with your partner from Settings.
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