# Studeng+ vs Rock Identifier

The clearest difference is in-app purchases: Studeng+ at none against Rock Identifier's 2. Studeng+ also leads on ads (none vs shown) and update cadence (every 3 days vs monthly). On price and device support there is nothing between them.

Both are free to download. Rock Identifier sells 2 in-app purchases, starting at $5.99 per 7 days. Studeng+ asks for nothing beyond the download.

Studeng+ ships an update every 3 days, Rock Identifier monthly. The most recent releases landed on October 8, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Studeng+ | Rock Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (19 ratings)](https://appshunter.io/ios/app/rock-identifier-stone-id-app/id6756703781/reviews)** |
| Number of ratings | — | **19** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 62 MB | 51 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Everyware Apps](https://appshunter.io/developer/718530491) | [Asad Ahsan](https://appshunter.io/developer/1326954499) |

## What reviewers say

### Studeng+

[App page](https://appshunter.io/ios/app/studeng-plus/id6504816089)

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

**In-app purchases:** none


### Rock Identifier

[App page](https://appshunter.io/ios/app/rock-identifier-stone-id-app/id6756703781)

Instantly identify rocks, minerals, and gemstones using your phone's camera. Learn about their properties, origin, and build a personal collection of your discoveries. Perfect for students, collectors, and anyone curious about geology.

**Highlights:** Identify rocks, stones, minerals, diamonds, gemstones, and crystals from a photo, Learn rock properties: name, hardness, color, luster, Record rock/gem hunting discoveries, Search over 6000 types of rocks, Build a personal stone collection, Stone scanner and rock detection in seconds

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $5.99 | per 7 days |
| Yearly Subscription | $59.99 | per year |


## Frequently asked questions

### Is Studeng+ free?

Studeng+ 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 Studeng+ or Rock Identifier have ads?

Rock Identifier shows ads; Studeng+ does not.

### Which is updated more often, Studeng+ or Rock Identifier?

Studeng+ ships an update every 3 days, and Rock Identifier monthly. Most recently, Studeng+ was updated on October 8, 2026 and Rock Identifier on October 24, 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.*