# The Wonder Weeks vs Oona

The Wonder Weeks and Oona both sit at 4.8 stars, but that hides the real split: 100% of Oona's written reviews are positive against 53% of The Wonder Weeks's. Oona also leads on in-app purchases (none vs 10) and ads (none vs shown). The Wonder Weeks's advantage is price (Free vs $1.99) and ratings volume (122K vs 23). On rating, chart position and device support there is nothing between them.

The Wonder Weeks is free to download; Oona costs $1.99 up front. The Wonder Weeks sells 10 in-app purchases, starting at $1.99 per month. Oona asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for The Wonder Weeks against 4.9 for Oona. That said, the two scores are not equally well evidenced: The Wonder Weeks has 122K ratings behind it against 23, so its average is the more settled of the two. Written reviews are what separate them: 53% of The Wonder Weeks's written reviews are positive against 100% of Oona's.

The Wonder Weeks ships an update fortnightly, Oona monthly. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | The Wonder Weeks | Oona |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [4.8 (122K ratings)](https://appshunter.io/ios/app/the-wonder-weeks-baby-leaps/id529815782/reviews) | **[4.9 (23 ratings)](https://appshunter.io/ios/app/oona-ferber-method-timer/id6747005575/reviews)** |
| Number of ratings | **122K** | 23 |
| Positive reviews | 53.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#92** | #99 |
| Size | 94 MB | 36 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | +4 | 4+ |
| Developer | [Domus Technica](https://appshunter.io/developer/529815785) | [Thomas Pang](https://appshunter.io/developer/1819342453) |

## What reviewers say

### The Wonder Weeks

[App page](https://appshunter.io/ios/app/the-wonder-weeks-baby-leaps/id529815782)

**Currently charting:** #92 Top Grossing · Health & Fitness (US App Store)

Understand your baby's developmental leaps and associated fussiness with this milestone tracker. It offers personalized schedules, insights into new skills, and playtime activities to support your baby's growth. Connect with other parents and access helpful parenting videos.

**Highlights:** Personalized leap schedule, Automatic leap notifications, Recognize leap signals, Discover new baby skills, 77 playtime games, Personal diary, Partner app linking, Parent forum

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Subscription | $1.99 | per month |
| 6 Month Subscription | $4.99 | per 6 months |
| 1 Month subscription | $4.99 | per month |
| 3 Months subscription | $9.99 | per 3 months |
| eBook - Chapter 1 | $0.99 | one-time |
| eBook - Chapter 2 | $0.99 | one-time |
| eBook - Chapter 3 | $0.99 | one-time |
| eBook - Chapter 4 | $0.99 | one-time |
| eBook - Chapter 5 | $0.99 | one-time |
| 24 Months subscription | $34.99 | one-time |

**What reviewers like**

- 👍 Helpful for understanding baby's development
- 🤗 Provides reassurance and peace of mind
- 📆 Accurate in predicting fussy phases
- 💡 Offers activities to support baby's growth
- 🙌 Great for first-time parents

**What reviewers complain about**

- 🤔 Inaccurate in predicting leaps and milestones
- 💰 Expensive with hidden subscription costs
- 📱 Poor app design and user experience
- 🤷‍♀️ Information not tailored to individual babies
- 🙅‍♀️ Difficult to share account with partner

**Reported bugs**

- Crashing and login issues
- Syncing problems with calendar and data loss
- Inconsistent behavior across app updates

**Requested features**

- Ability to adjust due date/birth date
- More personalized content and tracking
- Improved calendar and diary functionality
- Community features to connect with other parents
- Inclusion of all content without additional purchases


### Oona

[App page](https://appshunter.io/ios/app/oona-ferber-method-timer/id6747005575)

**Currently charting:** #99 Top Paid · Health & Fitness (US App Store)

Simplify sleep training with guided timers and progress tracking. This app offers step-by-step support, customizable plans, and visual charts to help parents manage their baby's sleep routines.

**Highlights:** Step-by-step sleep training support, Customizable sleep plans, Built-in timers for wait intervals, Progress tracking with visual charts, Detailed night logs and insights, Ferber method guidance

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is The Wonder Weeks free?

The Wonder Weeks is free to download, with in-app purchases available.

### Is Oona free?

Oona costs $1.99, with no in-app purchases.

### Which has better reviews, The Wonder Weeks or Oona?

Oona is rated higher. The Wonder Weeks averages 4.8 out of 5 from 122K ratings, while Oona averages 4.9 from 23 ratings.

### Do The Wonder Weeks or Oona have ads?

The Wonder Weeks shows ads; Oona does not.

### Which is updated more often, The Wonder Weeks or Oona?

The Wonder Weeks ships an update fortnightly, and Oona monthly. Most recently, The Wonder Weeks was updated on November 6, 2026 and Oona on November 5, 2026.

### Which is more popular, The Wonder Weeks or Oona?

The Wonder Weeks currently peaks at #92 in the App Store charts, and Oona at #99. Chart position reflects recent download velocity rather than total install base.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*