# ModTools vs RockLens：Stone & Gem Scanner

The clearest difference is in-app purchases: ModTools at none against RockLens：Stone & Gem Scanner's 4. ModTools also leads on update cadence (weekly vs every 2 weeks) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. RockLens：Stone & Gem Scanner sells 4 in-app purchases, starting at $39.99 per year. ModTools asks for nothing beyond the download.

ModTools ships an update weekly, RockLens：Stone & Gem Scanner every 2 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ModTools | RockLens：Stone & Gem Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (38 ratings)](https://appshunter.io/ios/app/rocklensstone-and-gem-scanner/id6751096095/reviews)** |
| Number of ratings | — | **38** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 131 MB | 106 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [FREEGLE](https://appshunter.io/developer/970045028) | [MOREONEP PTE. LTD.](https://appshunter.io/developer/1804827666) |

## What reviewers say

### ModTools

[App page](https://appshunter.io/ios/app/modtools/id1188375682)

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

**In-app purchases:** none


### RockLens：Stone & Gem Scanner

[App page](https://appshunter.io/ios/app/rocklensstone-and-gem-scanner/id6751096095)

Instantly identify rocks, gems, and crystals with a photo. Get detailed information, learn about their significance, and track your collection. Discover value insights and explore a library of guides.

**Highlights:** Instant rock and gem identification via photo, In-depth stone profiles with composition and formation, Identification of gemstones and jade, Birthstone and zodiac crystal meanings, Personal rock collection tracker, Value insights for stones, Library of rock and gem guides

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $39.99 | per year |
| Premium Access | $39.99 | per year |
| Premium Access | $39.99 | per year |
| Premium Access | $69.99 | one-time |


## Frequently asked questions

### Is ModTools free?

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

### Is RockLens：Stone & Gem Scanner free?

RockLens：Stone & Gem Scanner is free to download, with in-app purchases available.

### Do ModTools or RockLens：Stone & Gem Scanner have ads?

Neither ModTools nor RockLens：Stone & Gem Scanner shows ads.

### Which is updated more often, ModTools or RockLens：Stone & Gem Scanner?

ModTools ships an update weekly, and RockLens：Stone & Gem Scanner every 2 weeks. Most recently, ModTools was updated on October 26, 2026 and RockLens：Stone & Gem Scanner on October 24, 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.*