# Rock Identifier vs Intro Game

The clearest difference is in-app purchases: Intro Game at none against Rock Identifier's 10. Intro Game also leads on iOS requirement (12.0 vs 15.0). Rock Identifier's advantage is update cadence (every 3 weeks vs every 20 months) and chart position (#39 vs unranked). On price, ads and device support there is nothing between them.

Both are free to download. Rock Identifier sells 7 in-app purchases, starting at $3.99 per 7 days. Intro Game asks for nothing beyond the download.

Rock Identifier ships an update every 3 weeks, Intro Game every 20 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Rock Identifier | Intro Game |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (82K ratings)](https://appshunter.io/ios/app/rock-identifier-stone-id/id1546796934/reviews)** | — |
| Number of ratings | **82K** | — |
| Positive reviews | 64.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 20 months |
| Monetization | Freemium | — |
| Best chart rank | **#39** | — |
| Size | 201 MB | 60 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Next Vision Limited](https://appshunter.io/developer/1532006906) | [Serious Game Academy B.V.](https://appshunter.io/developer/1653602754) |

## What reviewers say

### Rock Identifier

[App page](https://appshunter.io/ios/app/rock-identifier-stone-id/id1546796934)

**Currently charting:** #39 Top Grossing · Education, #178 Top Free · Education (US App Store)

Instantly identify rocks, minerals, and gemstones by taking a photo. Access a comprehensive encyclopedia with detailed information on each stone, learn to distinguish real from fake gems, and explore their properties. The app also includes a metal detector and expert consultation.

**Highlights:** Photo-based rock identification, Stone and crystal encyclopedia, Real vs. fake gemstone guide, Healing properties and zodiac stones, In-app metal detector, Expert consultation service, Personal rock collection management

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rock Identifier Premium | $3.99 | per 7 days |
| Rock Identifier Premium | $7.99 | per month |
| Rock Identifier Premium | $29.99 | per year |
| Rock Identifier Premium | $39.99 | per year |
| Rock Identifier Premium | $39.99 | per year |
| Rock Identifier Premium | $39.99 | per year |
| Rock Identifier Premium | $69.99 | one-time |

**What reviewers like**

- 🤩 Accurate rock identification
- 🤓 Extensive information on rocks
- 🧠 Helpful for learning about rocks
- 🪨 Great for rock collectors
- 🤖 Powerful AI-based identification

**What reviewers complain about**

- 💰 Expensive subscription model
- 🔢 Limited free scans per day
- 🔍 Inconsistent accuracy, sometimes wrong
- 🔀 Gives different results for same rock
- 🙅‍♀️ Poor customer support

**Reported bugs**

- App crashes or freezes
- Subscription issues and unexpected charges
- Inaccurate rock identification
- Inability to delete or edit rock entries

**Requested features**

- Ability to manually input rock names
- Option to create and manage rock collections
- More comprehensive rock/mineral database
- Improved search and filtering capabilities
- Offline mode for rock identification


### Intro Game

[App page](https://appshunter.io/ios/app/intro-game/id6444288605)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rock Identifier free?

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

### Is Intro Game free?

Intro Game is free to download, with no in-app purchases.

### Do Rock Identifier or Intro Game have ads?

Neither Rock Identifier nor Intro Game shows ads.

### Which is updated more often, Rock Identifier or Intro Game?

Rock Identifier ships an update every 3 weeks, and Intro Game every 20 months. Most recently, Rock Identifier was updated on November 6, 2026 and Intro Game on November 3, 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.*