# Osmo Coding Jam vs Primedor

The clearest difference is rating: Primedor at 5.0 against Osmo Coding Jam's 4.2. Primedor also leads on review sentiment (100% vs 68%) and update cadence (every 3 days vs every 2 months). Osmo Coding Jam's advantage is ratings volume (272 vs 1) and device support (3 vs 1). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Primedor holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Osmo Coding Jam has 272 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 68% of Osmo Coding Jam's written reviews are positive against 100% of Primedor's.

Osmo Coding Jam ships an update every 2 months, Primedor every 3 days. The most recent releases landed on September 25, 2026 and July 1, 2026 respectively.

## The numbers

| Metric | Osmo Coding Jam | Primedor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (272 ratings)](https://appshunter.io/ios/app/osmo-coding-jam/id1188022582/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/primedor/id6754699461/reviews)** |
| Number of ratings | **272** | 1 |
| Positive reviews | 68.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 395 MB | 11 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tangible Play](https://appshunter.io/developer/799157444) | [Harold Sultan](https://appshunter.io/developer/1846424336) |

## What reviewers say

### Osmo Coding Jam

[App page](https://appshunter.io/ios/app/osmo-coding-jam/id1188022582)

This app allows children to create original music by arranging physical coding blocks into patterns and sequences. It offers over 300 musical sounds and enables kids to record and share their compositions with others. It's a STEAM-based experience that teaches coding fundamentals through music.

**Highlights:** Create music with physical coding blocks, Compose original tunes, Over 300 musical sounds, Record and share music, Learn coding fundamentals, Develop rhythm and melody skills

**In-app purchases:** none

**What reviewers like**

- 👍 Fun and enjoyable gameplay
- 🎶 Great for learning coding and music
- 🤩 Inspiring and creative tool
- ✨ Amazing app experience
- 👍 Works well on older iPads

**What reviewers complain about**

- 🐛 Incompatible with current iPads
- 🐛 App not working after updates
- 🐛 Crashing issues
- 🐛 Glitches and errors
- 🐛 Does not recognize tiles

**Reported bugs**

- Not compatible with current generation of iPads
- App does not work after returning from a trip
- App crashes on opening
- Cannot play on iPad 10
- Glitches when coding a song

**Requested features**

- Add more characters
- Add a trade character feature
- Add more updates
- Add a feature to create own musical characters
- Add engineer feature


### Primedor

[App page](https://appshunter.io/ios/app/primedor/id6754699461)

A strategic card game where players build a mathematical empire by collecting tokens, purchasing cards with permanent bonuses, and claiming legendary mathematicians. Challenge intelligent AI opponents in games of flexible speed and track your progress.

**Highlights:** Strategic token economy, Intelligent AI opponents, 90 unique math cards, 10 mathematicians to claim, Flexible gameplay speed, Progress tracking

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Osmo Coding Jam free?

Osmo Coding Jam is free to download, with no in-app purchases.

### Is Primedor free?

Primedor is free to download, with no in-app purchases.

### Which has better reviews, Osmo Coding Jam or Primedor?

Primedor is rated higher. Osmo Coding Jam averages 4.2 out of 5 from 272 ratings, while Primedor averages 5.0 from 1 ratings.

### Do Osmo Coding Jam or Primedor have ads?

Neither Osmo Coding Jam nor Primedor shows ads.

### Which is updated more often, Osmo Coding Jam or Primedor?

Osmo Coding Jam ships an update every 2 months, and Primedor every 3 days. Most recently, Osmo Coding Jam was updated on September 25, 2026 and Primedor on July 1, 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.*