# TreasureHunter3D vs Rock identifier. Crystal guide

The clearest difference is rating: TreasureHunter3D at 5.0 against Rock identifier. Crystal guide's 4.1. TreasureHunter3D also leads on in-app purchases (none vs 2) and review sentiment (22% vs 13%). Rock identifier. Crystal guide's advantage is update cadence (every 4 days vs every 11 months) and ratings volume (113 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. Rock identifier. Crystal guide sells 2 in-app purchases, starting at $14.49 per month. TreasureHunter3D asks for nothing beyond the download.

TreasureHunter3D holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Rock identifier. Crystal guide has 113 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 22% of TreasureHunter3D's written reviews are positive against 13% of Rock identifier. Crystal guide's.

TreasureHunter3D ships an update every 11 months, Rock identifier. Crystal guide every 4 days. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | TreasureHunter3D | Rock identifier. Crystal guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/treasurehunter3d/id846719060/reviews)** | [4.1 (113 ratings)](https://appshunter.io/ios/app/rock-identifier-crystal-guide/id1591512914/reviews) |
| Number of ratings | 1 | **113** |
| Positive reviews | **22.2% of reviews** | 12.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 4 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 19 MB | 145 MB |
| Requires iOS | **9.1** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tekaso](https://appshunter.io/developer/560600670) | [Dmitriy Beloglazov](https://appshunter.io/developer/1591512916) |

## What reviewers say

### TreasureHunter3D

[App page](https://appshunter.io/ios/app/treasurehunter3d/id846719060)

Visualize buried objects up to 30 meters deep with high-resolution 3D scans. Detect precious metals, ancient artifacts, and hidden structures. Requires a specific metal detector device.

**Highlights:** High-resolution 3D object visualization, Detect object presence, depth, and size, View sub-surface object shapes, Store scan data and GPS locations, Share scans via email and social media, Export scans to mapping software, Bluetooth 4.0 connectivity

**In-app purchases:** none


### Rock identifier. Crystal guide

[App page](https://appshunter.io/ios/app/rock-identifier-crystal-guide/id1591512914)

Identify rocks, crystals, and stones using your phone's camera. Explore a comprehensive reference encyclopedia and manage your personal collection. Discover the world of geology with this intuitive guide.

**Highlights:** Photo identification of rocks and crystals, Reference encyclopedia, Collection tracking, Gem and stone identification, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Crystal Identifier. 1 month. | $14.49 | per month |
| Premium - Year | $24.49 | per year |


## Frequently asked questions

### Is TreasureHunter3D free?

TreasureHunter3D is free to download, with no in-app purchases.

### Is Rock identifier. Crystal guide free?

Rock identifier. Crystal guide is free to download, with in-app purchases available.

### Which has better reviews, TreasureHunter3D or Rock identifier. Crystal guide?

TreasureHunter3D is rated higher. TreasureHunter3D averages 5.0 out of 5 from 1 ratings, while Rock identifier. Crystal guide averages 4.1 from 113 ratings.

### Do TreasureHunter3D or Rock identifier. Crystal guide have ads?

Neither TreasureHunter3D nor Rock identifier. Crystal guide shows ads.

### Which is updated more often, TreasureHunter3D or Rock identifier. Crystal guide?

TreasureHunter3D ships an update every 11 months, and Rock identifier. Crystal guide every 4 days. Most recently, TreasureHunter3D was updated on October 23, 2026 and Rock identifier. Crystal guide on October 22, 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.*