# Osmo Shape Builder vs Night Zookeeper

The clearest difference is review sentiment: Night Zookeeper at 83% against Osmo Shape Builder's 0%. Night Zookeeper also leads on rating (4.6 vs 2.3) and update cadence (every 2 months vs every 3 months). Osmo Shape Builder's advantage is monetization model (free with in-app purchases vs subscription). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Osmo Shape Builder sells 2 one-off in-app purchases and Night Zookeeper sells 12 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

Night Zookeeper holds the better App Store score, 4.6 against 2.3. That said, the two scores are not equally well evidenced: Night Zookeeper has 592 ratings behind it against 86, so its average is the more settled of the two. Written reviews point the same way: 0% of Osmo Shape Builder's written reviews are positive against 83% of Night Zookeeper's.

Osmo Shape Builder ships an update every 3 months, Night Zookeeper every 2 months. The most recent releases landed on October 9, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Osmo Shape Builder | Night Zookeeper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (86 ratings)](https://appshunter.io/ios/app/osmo-shape-builder/id1492331208/reviews) | **[4.6 (592 ratings)](https://appshunter.io/ios/app/night-zookeeper-fun-learning/id6504489937/reviews)** |
| Number of ratings | 86 | **592** |
| Positive reviews | 0.0% of reviews | **82.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 322 MB | 378 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tangible Play](https://appshunter.io/developer/799157444) | [Wonky Star](https://appshunter.io/developer/573502316) |

## What reviewers say

### Osmo Shape Builder

[App page](https://appshunter.io/ios/app/osmo-shape-builder/id1492331208)

This app helps young children learn basic geometric shapes through interactive play. It progresses from identifying shapes to creating them, fostering a love for learning and turning screen time into an educational experience.

**Highlights:** Learn basic geometric shapes, Compose and create shapes, Identify and describe shapes, Color recognition, Hands-on learning system, Inspires love of learning

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-day trial of Shape Builder | Free | one-time |
| Unlock Shape Builder | $24.99 | one-time |


### Night Zookeeper

[App page](https://appshunter.io/ios/app/night-zookeeper-fun-learning/id6504489937)

This app makes reading and writing fun for children aged 6-12. It offers mini-games, video lessons, and skill challenges covering a full English language arts curriculum. Children receive personalized feedback from tutors and earn rewards, while parents can track progress.

**Highlights:** Interactive mini-games, Video lessons, Skill challenges, Tutor feedback on writing, Parent progress tracking, Motivating rewards, Collaborative writing opportunities

**Features:** macOS Compatibility

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NZK 1 Month - 1 License | $14.99 | per month |
| 1 Month - 2 Licenses | $17.99 | per month |
| NZK 1 Month - 3 Licenses | $17.99 | per month |
| 1 Month - 4 Licenses | $21.99 | per month |
| 3 Months - 1 License | $36.99 | per 3 months |
| 3 Months - 2 Licenses | $49.99 | per 3 months |
| 3 Months - 3 Licenses | $49.99 | per 3 months |
| Yearly - 1 License | $118.99 | per year |
| Yearly - 2 Licenses | $154.99 | per year |
| Yearly - 3 Licenses | $154.99 | per year |
| Yearly - 4 Licenses | $189.99 | per year |
| Yearly - 5 Licenses | $239.99 | per year |

**What reviewers like**

- 👍 Fun and engaging
- 🚀 Helps improve writing skills
- 💡 Gamifies learning
- 👍 Motivates reluctant writers
- 👍 Constructive feedback from tutors

**What reviewers complain about**

- 🐛 Glitchy and laggy performance
- 🐛 Inconsistent difficulty levels
- 🔋 Drains device battery
- 🔒 Questionable subscription practices

**Reported bugs**

- Freezing and crashing issues
- Upside-down screen when creating new characters
- Audio not working consistently

**Requested features**

- Dark mode option
- Compatibility improvements for older devices
- More content for older age groups


## Frequently asked questions

### Is Osmo Shape Builder free?

Osmo Shape Builder is free to download, with in-app purchases available.

### Is Night Zookeeper free?

Night Zookeeper is free to download, with in-app purchases available.

### Which has better reviews, Osmo Shape Builder or Night Zookeeper?

Night Zookeeper is rated higher. Osmo Shape Builder averages 2.3 out of 5 from 86 ratings, while Night Zookeeper averages 4.6 from 592 ratings.

### Do Osmo Shape Builder or Night Zookeeper have ads?

Neither Osmo Shape Builder nor Night Zookeeper shows ads.

### Which is updated more often, Osmo Shape Builder or Night Zookeeper?

Osmo Shape Builder ships an update every 3 months, and Night Zookeeper every 2 months. Most recently, Osmo Shape Builder was updated on October 9, 2026 and Night Zookeeper on October 11, 2026.

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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.*