# Rock Identifier vs AU Learner Driver Test Prep

Rock Identifier and AU Learner Driver Test Prep are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Rock Identifier sells 9 in-app purchases, starting at $2.99 per 7 days and AU Learner Driver Test Prep sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Rock Identifier | AU Learner Driver Test Prep |
| --- | --- | --- |
| 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 | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Lumos apps](https://appshunter.io/developer/1535604225) | [MD Shahariar Nazim Joy](https://appshunter.io/developer/1893961943) |

## 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


### AU Learner Driver Test Prep

[App page](https://appshunter.io/ios/app/au-learner-driver-test-prep/id6793936401)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Access | $4.99 | per month |
| Annual Access | $14.99 | per year |
| Lifetime Access | $19.99 | one-time |


## Frequently asked questions

### Is Rock Identifier free?

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

### Is AU Learner Driver Test Prep free?

AU Learner Driver Test Prep is free to download, with in-app purchases available.

### Do Rock Identifier or AU Learner Driver Test Prep have ads?

Neither Rock Identifier nor AU Learner Driver Test Prep 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.*