# PSLab vs Rock Identifier

The clearest difference is in-app purchases: PSLab at none against Rock Identifier's 4. PSLab also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, 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. PSLab asks for nothing beyond the download.

PSLab ships an update fortnightly, Rock Identifier every 9 days. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | PSLab | 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 | Fortnightly | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 32 MB | 37 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [FOSSASIA](https://appshunter.io/developer/1788752366) | [MUSTAFA RESIT SAHIN](https://appshunter.io/developer/1787713188) |

## What reviewers say

### PSLab

[App page](https://appshunter.io/ios/app/pslab/id6740454978)

**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 PSLab free?

PSLab 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 PSLab or Rock Identifier have ads?

Neither PSLab nor Rock Identifier shows ads.

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

PSLab ships an update fortnightly, and Rock Identifier every 9 days. Most recently, PSLab was updated on October 17, 2026 and Rock Identifier on October 7, 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.*