# Stone Identifier Rock ID Scan vs Central Billing System

The clearest difference is in-app purchases: Central Billing System at none against Stone Identifier Rock ID Scan's 4. Central Billing System also leads on iOS requirement (11.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Stone Identifier Rock ID Scan sells 4 in-app purchases, starting at $3.99 per 7 days. Central Billing System asks for nothing beyond the download.

## The numbers

| Metric | Stone Identifier Rock ID Scan | Central Billing System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (200 ratings)](https://appshunter.io/ios/app/stone-identifier-rock-id-scan/id1592077054/reviews)** | — |
| Number of ratings | **200** | — |
| Positive reviews | 54.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | — |
| Size | 44 MB | 38 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Manh Nguyen hong](https://appshunter.io/developer/1592077356) | [Krystal Digital Network Solutions](https://appshunter.io/developer/1646948391) |

## What reviewers say

### Stone Identifier Rock ID Scan

[App page](https://appshunter.io/ios/app/stone-identifier-rock-id-scan/id1592077054)

Instantly identify rocks, crystals, and gems by taking a photo or selecting one from your library. This AI-powered tool provides detailed information about identified stones, including their properties and other names. Save your discoveries and learn about the geological world around you.

**Highlights:** Identify rocks, crystals, and gems, AI-powered image recognition, Detailed information on stones, Save identified rocks, Learn about stone ingredients and names

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $3.99 | per 7 days |
| Premium Monthly | $9.99 | per month |
| Premium Yearly Sale | $39.99 | per year |
| Premium Yearly | $49.99 | per year |

**What reviewers like**

- 👍 Useful for rock collectors
- 👍 Helps identify rocks
- 👍 Provides information about rocks
- 👍 Accurate identification (for some users)
- 👍 Fun to use

**What reviewers complain about**

- 💰 Expensive subscription/payment required
- ❌ Does not work for free
- ❌ Inaccurate identification
- ❌ Limited free scans
- ❌ Difficult to use

**Reported bugs**

- App does not work
- Locked up on a buy subscription page
- Cannot get app off phone

**Requested features**

- Allow free rock scanning
- Offer a free version of the app


### Central Billing System

[App page](https://appshunter.io/ios/app/central-billing-system/id1661103467)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Stone Identifier Rock ID Scan free?

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

### Is Central Billing System free?

Central Billing System is free to download, with no in-app purchases.

### Do Stone Identifier Rock ID Scan or Central Billing System have ads?

Neither Stone Identifier Rock ID Scan nor Central Billing System 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.*