# Square Panda Letter Lab vs Osmo Shape Builder

The clearest difference is review sentiment: Square Panda Letter Lab at 55% against Osmo Shape Builder's 0%. Square Panda Letter Lab also leads on rating (3.3 vs 2.3) and in-app purchases (none vs 2). Osmo Shape Builder's advantage is ratings volume (86 vs 15). On price, ads and device support there is nothing between them.

Both are free to download. Osmo Shape Builder sells 2 one-off in-app purchases. Square Panda Letter Lab asks for nothing beyond the download.

Square Panda Letter Lab holds the better App Store score, 3.3 against 2.3. That said, the two scores are not equally well evidenced: Osmo Shape Builder has 86 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 55% of Square Panda Letter Lab's written reviews are positive against 0% of Osmo Shape Builder's.

Square Panda Letter Lab ships an update every 2 months, Osmo Shape Builder every 3 months. The most recent releases landed on September 14, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Square Panda Letter Lab | Osmo Shape Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (15 ratings)](https://appshunter.io/ios/app/square-panda-letter-lab/id1091383431/reviews)** | [2.3 (86 ratings)](https://appshunter.io/ios/app/osmo-shape-builder/id1492331208/reviews) |
| Number of ratings | 15 | **86** |
| Positive reviews | **54.5% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 350 MB | 322 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Square Panda Inc.](https://appshunter.io/developer/1088414097) | [Tangible Play](https://appshunter.io/developer/799157444) |

## What reviewers say

### Square Panda Letter Lab

[App page](https://appshunter.io/ios/app/square-panda-letter-lab/id1091383431)

Children engage with letters and sounds in a playful laboratory setting. Robots help early learners discover the alphabet, phonemic awareness, and vocabulary through interactive activities. This app reinforces foundational reading skills for young children.

**Highlights:** Letter and sound discovery, Phonemic sound encoding/decoding, Interactive robot-based learning, Vocabulary building, Reading readiness skills

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Square Panda Letter Lab free?

Square Panda Letter Lab is free to download, with no in-app purchases.

### Is Osmo Shape Builder free?

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

### Which has better reviews, Square Panda Letter Lab or Osmo Shape Builder?

Square Panda Letter Lab is rated higher. Square Panda Letter Lab averages 3.3 out of 5 from 15 ratings, while Osmo Shape Builder averages 2.3 from 86 ratings.

### Do Square Panda Letter Lab or Osmo Shape Builder have ads?

Neither Square Panda Letter Lab nor Osmo Shape Builder shows ads.

### Which is updated more often, Square Panda Letter Lab or Osmo Shape Builder?

Square Panda Letter Lab ships an update every 2 months, and Osmo Shape Builder every 3 months. Most recently, Square Panda Letter Lab was updated on September 14, 2026 and Osmo Shape Builder on September 25, 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.*