# Rock Identifier vs DevMonkey

The clearest difference is device support: DevMonkey at 3 against Rock Identifier's 1. On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Rock Identifier sells 9 in-app purchases, starting at $2.99 per 7 days and DevMonkey sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Rock Identifier | DevMonkey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (292 ratings)](https://appshunter.io/ios/app/rock-identifier-crystal-gem/id6553989682/reviews)** | — |
| Number of ratings | **292** | — |
| Positive reviews | 13.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 100 MB | 8 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Lumos apps](https://appshunter.io/developer/1535604225) | [Luke Mclaughlin](https://appshunter.io/developer/1893671036) |

## What reviewers say

### Rock Identifier

[App page](https://appshunter.io/ios/app/rock-identifier-crystal-gem/id6553989682)

Instantly identify stones, gems, minerals, and crystals using your device's camera. Get detailed information on composition, formation, and common uses. Organize your discoveries and learn about their properties.

**Highlights:** Instant rock and crystal identification via photo, Detailed information on mineral composition, hardness, and origin, Gemstone authentication guide, Extensive rock and crystal encyclopedia, Personal rock collection manager, AI accuracy with confidence levels

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Weekly | $4.99 | per 7 days |
| Monthly | $4.99 | per month |
| Monthly | $9.99 | per month |
| Yearly Special Offer | $14.99 | per year |
| Yearly offer | $14.99 | per year |
| Yearly Subscription | $19.99 | per year |
| Yearly | $19.99 | per year |
| Yearly | $29.99 | per year |

**What reviewers like**

- 👍 Accurate identification (initially)
- 👍 Good information on stones
- 👍 Impressive accuracy rating (for some)
- 👍 Provides articles and insights

**What reviewers complain about**

- 😞 Does not identify stones
- 😞 Server connection errors
- 😞 Misidentifies stones
- 😞 Requires payment for full functionality
- 😞 Paid features stop working

**Reported bugs**

- App stops identifying stones after purchase
- Server connection errors
- App misidentifies stones
- App states photos are too blurry
- App stopped working after an update

**Requested features**

- Fix identification issues
- Improve server connection
- Restore lost features after update
- Provide accurate identification consistently
- Respond to user issues


### DevMonkey

[App page](https://appshunter.io/ios/app/devmonkey/id6793654092)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DevMonkey Pro Monthly | $6.99 | per month |
| DevMonkey Pro Annual | $39.99 | per year |
| DevMonkey Pro Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is Rock Identifier free?

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

### Is DevMonkey free?

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

### Do Rock Identifier or DevMonkey have ads?

Neither Rock Identifier nor DevMonkey 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.*