# Rock Identifier vs M

The clearest difference is in-app purchases: M at none against Rock Identifier's 3. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Rock Identifier sells 3 in-app purchases, starting at $2.99 per 7 days. M asks for nothing beyond the download.

## The numbers

| Metric | Rock Identifier | M |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (9 ratings)](https://appshunter.io/ios/app/rock-identifier-stone-value/id6755072129/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 21 MB | 42 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Omer Sezer](https://appshunter.io/developer/1543521470) | [Marat Shaimov](https://appshunter.io/developer/1531466745) |

## What reviewers say

### Rock Identifier

[App page](https://appshunter.io/ios/app/rock-identifier-stone-value/id6755072129)

Instantly identify rocks, minerals, and gemstones by taking a photo. Access detailed information including composition, hardness, rarity, and estimated value. Build and manage your personal collection with this educational tool.

**Highlights:** Instant photo identification, Detailed mineral composition, Mohs hardness scale rating, Rarity and value estimation (subscription), Personal rock collection manager, Educational geology articles, Regular database updates

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week | $2.99 | per 7 days |
| 1 Year With Offer | $12.99 | per year |
| 1 Year With Trial | $29.99 | per year |


### M

[App page](https://appshunter.io/ios/app/m-school/id6815974476)

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

**In-app purchases:** none


## Frequently asked questions

### Is Rock Identifier free?

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

### Is M free?

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

### Do Rock Identifier or M have ads?

Neither Rock Identifier nor M shows ads.

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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.*