# Rock Finder AI vs Coder World

The clearest difference is rating: Coder World at 5.0 against Rock Finder AI's 4.3. Coder World also leads on monetization model (free vs free with in-app purchases) and review sentiment (100% vs 78%). Rock Finder AI's advantage is ratings volume (48 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Rock Finder AI sells 3 in-app purchases, starting at $6.99 per 7 days and Coder World sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Coder World holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Rock Finder AI has 48 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 78% of Rock Finder AI's written reviews are positive against 100% of Coder World's.

Rock Finder AI ships an update weekly, Coder World every 2 weeks. The most recent releases landed on October 19, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Rock Finder AI | Coder World |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (48 ratings)](https://appshunter.io/ios/app/rock-finder-ai-stone-scanner/id6744815436/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/coder-world/id6755934255/reviews)** |
| Number of ratings | **48** | 2 |
| Positive reviews | 77.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 34 MB | 60 MB |
| Requires iOS | 17 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Davyd Rapp](https://appshunter.io/developer/1792201589) | [NavvConsulting Inc](https://appshunter.io/developer/1538092818) |

## What reviewers say

### Rock Finder AI

[App page](https://appshunter.io/ios/app/rock-finder-ai-stone-scanner/id6744815436)

Instantly identify rocks and minerals with AI by simply taking a photo. Explore detailed profiles, learn about classifications and properties, and build your personal collection. Perfect for enthusiasts and beginners alike.

**Highlights:** AI-powered real-time identification, Detailed rock and mineral profiles, Crystal system and hardness information, Explore mineral categories, Personal rock collection management, Shareable collection

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rock finder AI PRO | $6.99 | per 7 days |
| Rock finder AI PRO | $6.99 | per 7 days |
| Rock finder AI PRO | $49.99 | per year |

**What reviewers like**

- 🚀 Accurate and fast rock identification
- 👍 Easy to use and intuitive interface
- 💡 Helpful for learning about rocks and minerals
- 🌍 Works well in remote and offline areas
- 🎓 Great for educational and outdoor activities

**What reviewers complain about**

- 🔒 Requires subscription to access full features
- 💰 Perceived as overpriced by some users

**Reported bugs**

- Compatibility issues with older devices
- Occasional crashes or scanning failures

**Requested features**

- Free trial or limited free version
- More detailed rock information and analysis


### Coder World

[App page](https://appshunter.io/ios/app/coder-world/id6755934255)

Learn in-demand tech skills with an AI-powered tutor. This platform offers a comprehensive course library, structured learning paths, and interactive quizzes to help beginners and professionals master coding languages and technologies.

**Highlights:** Extensive course library (Spring Boot, Python, Java, NodeJS, React JS, Angular, SQL, Kubernetes), AI-powered explanations and examples, Structured learning paths with concept overviews, Interactive quizzes with immediate feedback, Progress tracking with daily streaks and achievements

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coder Ulagam Pro | $1.99 | per month |
| Coder Ulagam Pro | $19.99 | per year |
| Lifetime Pro Access | $4.99 | one-time |
| Lifetime Pro | $24.99 | one-time |


## Frequently asked questions

### Is Rock Finder AI free?

Rock Finder AI is free to download, with in-app purchases available.

### Is Coder World free?

Coder World is free to download, with in-app purchases available.

### Which has better reviews, Rock Finder AI or Coder World?

Coder World is rated higher. Rock Finder AI averages 4.3 out of 5 from 48 ratings, while Coder World averages 5.0 from 2 ratings.

### Do Rock Finder AI or Coder World have ads?

Neither Rock Finder AI nor Coder World shows ads.

### Which is updated more often, Rock Finder AI or Coder World?

Rock Finder AI ships an update weekly, and Coder World every 2 weeks. Most recently, Rock Finder AI was updated on October 19, 2026 and Coder World on October 5, 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.*