# RDB Digital vs Rock Identifier

The clearest difference is in-app purchases: RDB Digital at none against Rock Identifier's 7. RDB Digital also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.6). Rock Identifier's advantage is update cadence (weekly vs every 2 months). On price and device support there is nothing between them.

Both are free to download. Rock Identifier sells 7 in-app purchases, starting at $4.99 per 7 days. RDB Digital asks for nothing beyond the download.

RDB Digital ships an update every 2 months, Rock Identifier weekly. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | RDB Digital | Rock Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (73 ratings)](https://appshunter.io/ios/app/rock-identifier-stone-checker/id6745476824/reviews)** |
| Number of ratings | — | **73** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 188 MB | 85 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [intertaxexpert Gutachtenmanagement GmbH](https://appshunter.io/developer/1338773558) | [Blueberry Web Solutions Pvt. Ltd](https://appshunter.io/developer/1022756761) |

## What reviewers say

### RDB Digital

[App page](https://appshunter.io/ios/app/rdb-digital/id1524629811)

**Features:** macOS Compatibility

**In-app purchases:** none


### Rock Identifier

[App page](https://appshunter.io/ios/app/rock-identifier-stone-checker/id6745476824)

Instantly identify stones, crystals, and minerals with a photo. Access detailed information, quality guides, market values, and even a metal detector. Organize your collection and find nearby shops.

**Highlights:** Instant photo identification of rocks, minerals, crystals, Detailed encyclopedia with geological info, Stone quality assessment and market value estimation, Crystal healing and zodiac insights, Metal detector tool, Real vs. fake stone detection, Personal rock collection management

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RockID Weekly Pro | $4.99 | per 7 days |
| Rock Identifier Premium Weekly | $8.99 | per 7 days |
| Monthly Subscription | $9.99 | per month |
| Premium Yearly Subscription | $19.99 | per year |
| Rock Identifier Premium Yearly | $29.99 | per year |
| RockID Yearly Pro | $39.99 | per year |
| Rock Identifier & Stone Checker | $49.99 | one-time |


## Frequently asked questions

### Is RDB Digital free?

RDB Digital is free to download, with no in-app purchases.

### Is Rock Identifier free?

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

### Do RDB Digital or Rock Identifier have ads?

Rock Identifier shows ads; RDB Digital does not.

### Which is updated more often, RDB Digital or Rock Identifier?

RDB Digital ships an update every 2 months, and Rock Identifier weekly. Most recently, RDB Digital was updated on November 7, 2026 and Rock Identifier on October 30, 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.*