# Rock ID vs OSSLT Practice Test & Prep

The clearest difference is device support: OSSLT Practice Test & Prep at 3 against Rock ID's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Rock ID sells 13 in-app purchases, starting at $4.99 per 7 days and OSSLT Practice Test & Prep sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Rock ID ships an update monthly, OSSLT Practice Test & Prep every 2 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Rock ID | OSSLT Practice Test & Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (3.1K ratings)](https://appshunter.io/ios/app/rock-id-stone-identifier/id6469999508/reviews)** | — |
| Number of ratings | **3.1K** | — |
| Positive reviews | 37.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 48 MB | 142 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [AIBY](https://appshunter.io/developer/1458102137) | [Alpha Beat Limited](https://appshunter.io/developer/1745742707) |

## What reviewers say

### Rock ID

[App page](https://appshunter.io/ios/app/rock-id-stone-identifier/id6469999508)

Instantly identify rocks, minerals, and gems by snapping a photo. Explore detailed profiles, manage your personal collections, and keep a log of all your discoveries. Become a geology expert with this comprehensive guide.

**Highlights:** Instant AI-powered stone identification, Vast catalog of rock profiles, Personal rock and mineral collections, Detailed history of identifications, Learn rock composition and origin, Distinguish real gems from fakes

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rock ID PRO | $4.99 | per 7 days |
| Rock ID PRO | $4.99 | per 7 days |
| Weekly access (3 days trial) | $5.99 | per 7 days |
| Weekly access | $5.99 | per 7 days |
| Weekly access (3 days trial) | $6.99 | per 7 days |
| Weekly access | $6.99 | per 7 days |
| Rock ID PRO | $6.99 | per 7 days |
| Rock ID PRO | $6.99 | per 7 days |
| Yearly premium subscription | $19.99 | per year |
| Yearly access (3 days trial) | $19.99 | per year |
| Yearly premium subscription | $29.99 | per year |
| Rock ID PRO | $29.99 | per year |
| Yearly premium subscription | $39.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Instant identification
- 💡 Extensive stone library
- 🎓 Helpful for education

**What reviewers complain about**

- 🐛 Inconsistent identification accuracy
- 💰 Paywall after limited free scans
- 🤔 Questionable reliability for valuable stones
- 📷 Camera quality issues for small gems

**Reported bugs**

- Incorrect identification of common stones
- Failure to recognize obvious stone types
- Inability to scan certain stones

**Requested features**

- More detailed stone information
- Improved identification accuracy
- Ability to manually correct misidentifications
- Option to disable paywall for limited use


### OSSLT Practice Test & Prep

[App page](https://appshunter.io/ios/app/osslt-practice-test-and-prep/id6797607323)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Rock ID free?

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

### Is OSSLT Practice Test & Prep free?

OSSLT Practice Test & Prep is free to download, with in-app purchases available.

### Do Rock ID or OSSLT Practice Test & Prep have ads?

Neither Rock ID nor OSSLT Practice Test & Prep shows ads.

### Which is updated more often, Rock ID or OSSLT Practice Test & Prep?

Rock ID ships an update monthly, and OSSLT Practice Test & Prep every 2 months. Most recently, Rock ID was updated on October 27, 2026 and OSSLT Practice Test & Prep 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.*