The Wonder Weeks App Review 2026: UK Cost, Free Version and an Alternative
Wonder Weeks helps you understand why your baby is suddenly clingy and unsettled. Mooshie gives you something to actually do together, and it carries on right up to age 4.
- Free to download
- No account needed
- No screen time for your child
On a laptop?Scan to get Mooshie on your iPhone.
The quick answer
- Is it free? It’s free to download, but the App Store lists the leap schedule, games and diary as things you use the subscription for.
- UK cost: the UK App Store lists several subscription options, from £1.49 up to £29.99 for 24 months.
- Is it worth it? Plenty of parents think so. It’s rated 4.8 from about 40,000 UK ratings. It covers the first 20 months only.
- An alternative to pair or swap: Mooshie picks a screen-free play activity for today, for ages 6 months to 4 years. 3 coached activities a week are free.
The Wonder Weeks vs Mooshie at a glance
| The Wonder Weeks | Mooshie Moments | |
|---|---|---|
| Who uses the screen | The parent (leap chart, leap descriptions, diary, forum) | The parent only. Your child never uses the screen. |
| Ages | First 20 months (10 leaps, worked out from the due date) | 6 months to 4 years |
| Main idea | Predicting and explaining mental leaps and fussy phases | A play activity for today, matched to age, time and mood |
| Play ideas | 77 playtime games linked to the leaps | 5,918 activities |
| Free version | Free to download; main features listed under the subscription | 3 coached activities a week, no account needed |
| Price (UK) | Several App Store options, from £1.49 to £29.99 (24 months) | £9.99 a month or £29.99 a year, with a 7-day free trial |
| Platforms | iPhone, iPad, Mac and Android | iPhone only for now (Android and iPad coming later) |
| What you need at home | Nothing beyond the subscription; play ideas use everyday items | Nothing, or everyday household items |
| Best for | Making sense of fussy phases in the first 20 months | Daily play from 6 months to 4 years, including the hard days |
Prices and features checked November 2026 from each app’s own website and the UK App Store. They can change, so check before you subscribe.
What is the Wonder Weeks app?
The Wonder Weeks app is based on the long-running book of the same name. The idea is that babies go through 10 mental development “leaps” in their first 20 months, and that each one tends to bring a fussy, clingy patch followed by new skills.
You enter your baby’s due date and the app works out a personal leap schedule. It sends a notification when a leap is about to start, describes the signs to look for, and explains the new skills each leap brings. Alongside that you get a development diary, partner linking, a community forum, videos, polls and 77 playtime games tied to the leaps.
It’s made by a Dutch publisher and is available on iPhone, iPad, Mac and Android.
How much does the Wonder Weeks app cost in the UK?
The app is free to download. However, the App Store description lists the leap schedule, notifications, playtime games, diary, partner linking, forum, videos and polls under “Use The Wonder Weeks subscription to”, so expect most of it to need a subscription.
At the time of writing (November 2026), the UK App Store lists these in-app purchases:
- 1 month: £3.99, and a second 1-month option at £1.49
- 3 months: £8.99
- 24 months: £29.99
- eBook chapters 1 to 5: £0.99 each
The store doesn’t explain why there are two monthly prices or which one a new user will see, so check the price in the app before you tap buy.
For comparison, Mooshie Premium is £9.99 a month or £29.99 a year, with a 7-day free trial. You don’t need Premium to start: 3 coached activities a week are free with no account.
What Wonder Weeks does well
There’s a reason so many parents have it on their phone. It’s rated 4.8 on the UK App Store from about 40,000 ratings. That is a lot of parents.
- It names the wobbly weeks. When your easy baby suddenly wants to be held all day, a leap chart can be a real comfort. You feel less alone, and less like you’re doing something wrong.
- There’s depth if you want it. Because it’s built on a bestselling book, you can read the theory behind each leap in detail.
- It’s made for two. Partner linking means you’re both seeing the same schedule, and the forum connects you with other parents in the same leap.
- Play is part of it. The 77 games are linked to each phase, so there’s a starting point for play.
Try Mooshie free this week.
3 coached activities every week, free. No account, no toys to buy, and your child never touches the screen.
Where it may not suit you
Wonder Weeks may not be the right fit if any of these sound like you:
- Your child is nearly 2 or older. The app covers the first 20 months. Once the last leap is done, there’s no toddler stage to move on to.
- You want a plan for every day. It’s built around predicting leaps rather than giving you a fresh activity each day, and the 77 games have to stretch across 20 months.
- Your baby doesn’t read the chart. Some reviewers say their baby’s development didn’t match the predicted timings, and the leap theory is questioned by some. If your little one runs to their own schedule, a calendar of leaps can feel less useful.
- You like simple pricing. The UK store lists several overlapping products, which can make it hard to know what you’ll pay.
Leaps tell you why. Play tells you what next.
Here’s the gap many parents notice. The leap chart says your 9-month-old is in a fussy phase. Great, that explains the crying. But it’s 4pm, it’s raining, and you still need something to do for the next half hour.
That’s where Mooshie comes in. You tell it how today is going, whether that’s high energy, a hard moment or winding down, and how much time you have. It picks an activity for your child’s age and stage, with “How to play” steps and the exact words to say. A short Brain Bit explains what the play does for your child, and “What that built” shows the skills you practised afterwards.
For the toughest bits there are Lifesavers for sleep regression, separation anxiety, bedtime and meltdowns. The Growth tab shows how your child is developing over time, and the journal keeps a note and photo of what they did.
To be fair to both apps: Mooshie doesn’t predict leaps, it has no video demos, and it starts at 6 months, so it won’t cover the newborn weeks. It’s also iPhone only for now and newer, with fewer reviews. Many parents will happily use Wonder Weeks for the why and Mooshie for the what. Our baby activities page is a good place to see the kind of play on offer.
Parents and experts on Mooshie
“I used to spend 30 minutes looking for an activity on Pinterest, get overwhelmed, and just turn on the TV. Mooshie takes 5 seconds.”
“Finally, an app that tells me to put my phone away. The activities are actually doable with stuff I have in my junk drawer.”
“As a pediatric OT, I love that these activities build core developmental skills without feeling like ‘homework’ for parents.”
Why parents choose Mooshie over The Wonder Weeks
It doesn’t stop at 20 months
Mooshie carries on through the toddler years to age 4, so the app grows with your child instead of running out after the last leap.
Something to do in a fussy patch
Tap “a hard moment” and Mooshie suggests calm, doable play with the words to say, to go alongside knowing a leap has started.
Thousands of ideas, not dozens
There are 5,918 activities, most needing nothing or everyday household items, so there’s plenty of variety as your child grows.
Other The Wonder Weeks alternatives
- Kinedu: A paid, assessment-led programme with video activities and milestone tracking from pregnancy to age 6.
- BabySparks: A daily programme of video-demonstrated activities and milestone tracking for 0 to 3 years.
- Pathways.org Baby Milestones: A free milestone tracker from a US non-profit, with real-baby video examples and simple trackers.
- The Happy Child: Free short daily lessons on parenting approach, if you’d like reading rather than a leap chart.
Questions parents ask
Is the Wonder Weeks app free?
It’s free to download, but the App Store lists the leap schedule, notifications, games, diary and forum as subscription features. Exactly what you can use without paying isn’t spelled out on the store page. If you want something free to keep, Mooshie gives you 3 coached play activities a week with no account.
How much is the Wonder Weeks app in the UK?
At the time of writing, the UK App Store lists options from £1.49 for a month up to £29.99 for 24 months, plus eBook chapters at £0.99. There are two different monthly prices listed, so check what the app offers you before paying.
Is the Wonder Weeks app worth it?
If you have a baby under 20 months and want to understand fussy phases, it may reassure you, and it is rated 4.8 in the UK. It’s less useful if your child is older, or if your baby doesn’t follow the predicted timings. If what you really want is play ideas, a play-first app may suit you better.
What is a good free alternative to the Wonder Weeks app?
Pathways.org Baby Milestones is free and focuses on milestones with video examples. Mooshie Moments is free to start, with 3 screen-free play activities a week for ages 6 months to 4 years, and doesn’t need an account.
What age does Wonder Weeks go up to?
The app covers the first 20 months, across 10 leaps calculated from your baby’s due date. For toddlers, try our 2-year-old activities or an app like Mooshie that runs to age 4.
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