# Crystal Me vs Rock Identifier & Snap ID

The clearest difference is update cadence: Crystal Me at every 5 days against Rock Identifier & Snap ID's every 5 weeks. Crystal Me also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Crystal Me sells 1 one-off in-app purchase and Rock Identifier & Snap ID sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Crystal Me ships an update every 5 days, Rock Identifier & Snap ID every 5 weeks. The most recent releases landed on October 11, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Crystal Me | Rock Identifier & Snap ID |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.8 (10 ratings)](https://appshunter.io/ios/app/rock-identifier-and-snap-id/id6749470151/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 5 weeks |
| Monetization | — | Freemium |
| Size | 159 MB | 18 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [梦琦 徐](https://appshunter.io/developer/1784852515) | [升 徐](https://appshunter.io/developer/1693016656) |

## What reviewers say

### Crystal Me

[App page](https://appshunter.io/ios/app/crystal-me/id6741855152)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 水晶Crystal Pro | $0.99 | one-time |


### Rock Identifier & Snap ID

[App page](https://appshunter.io/ios/app/rock-identifier-and-snap-id/id6749470151)

Instantly identify rocks, minerals, and gems with professional-level geological insights. Discover their origins, formation processes, and potential value. Organize your finds into personal collections and become a rock enthusiast.

**Highlights:** Identify rocks, minerals, and gems, Instant geological analysis, Discover formation processes, Estimate value and rarity, Organize finds into collections

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| Annual | $24.99 | per year |
| Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Crystal Me free?

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

### Is Rock Identifier & Snap ID free?

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

### Do Crystal Me or Rock Identifier & Snap ID have ads?

Neither Crystal Me nor Rock Identifier & Snap ID shows ads.

### Which is updated more often, Crystal Me or Rock Identifier & Snap ID?

Crystal Me ships an update every 5 days, and Rock Identifier & Snap ID every 5 weeks. Most recently, Crystal Me was updated on October 11, 2026 and Rock Identifier & Snap ID on October 14, 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.*