# Steinfinder vs Rock Identifier

The clearest difference is in-app purchases: Steinfinder at none against Rock Identifier's 4. Steinfinder also leads on iOS requirement (15.1 vs 17.0). Rock Identifier's advantage is update cadence (every 9 days vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Rock Identifier sells 4 in-app purchases, starting at $4.99 per 7 days. Steinfinder asks for nothing beyond the download.

Steinfinder ships an update every 4 months, Rock Identifier every 9 days. The most recent releases landed on September 18, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | Steinfinder | Rock Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/rock-identifier-petra/id6756741676/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 17 MB | 37 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Webulos OG](https://appshunter.io/developer/401130511) | [MUSTAFA RESIT SAHIN](https://appshunter.io/developer/1787713188) |

## What reviewers say

### Steinfinder

[App page](https://appshunter.io/ios/app/steinfinder/id1623209995)

**Features:** macOS Compatibility

**In-app purchases:** none


### Rock Identifier

[App page](https://appshunter.io/ios/app/rock-identifier-petra/id6756741676)

Instantly identify rocks, minerals, and crystals by taking a photo. Get clear details, save your discoveries, and create personalized profiles for your collection. Explore traditional crystal interpretations for learning and enjoyment.

**Highlights:** AI-powered rock identification, Detailed identification results, Personalized stone collection, Customizable rock profiles, Traditional crystal interpretations, Offline saving of scans

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Rock Identification | $4.99 | per 7 days |
| Unlimited Rock Identification | $7.99 | per month |
| Unlimited Rock Identification | $9.99 | per 7 days |
| Unlimited Rock Identification | $39.99 | per year |


## Frequently asked questions

### Is Steinfinder free?

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

### Is Rock Identifier free?

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

### Do Steinfinder or Rock Identifier have ads?

Neither Steinfinder nor Rock Identifier shows ads.

### Which is updated more often, Steinfinder or Rock Identifier?

Steinfinder ships an update every 4 months, and Rock Identifier every 9 days. Most recently, Steinfinder was updated on September 18, 2026 and Rock Identifier on September 5, 2026.

---

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