# UnitSwap vs Rock Identifier

The clearest difference is rating: UnitSwap at 5.0 against Rock Identifier's 3.6. UnitSwap also leads on in-app purchases (none vs 2) and iOS requirement (12.4 vs 15.0). Rock Identifier's advantage is ratings volume (20 vs 2). On price, ads and device support there is nothing between them.

Both are free to download. Rock Identifier sells 2 in-app purchases, starting at $4.99 per 7 days. UnitSwap asks for nothing beyond the download.

UnitSwap holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: Rock Identifier has 20 ratings behind it against 2, so its average is the more settled of the two.

## The numbers

| Metric | UnitSwap | Rock Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/unitswap/id6450141706/reviews)** | [3.6 (20 ratings)](https://appshunter.io/ios/app/rock-identifier-gemstone-id/id6741156875/reviews) |
| Number of ratings | 2 | **20** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Monetization | **Free** | Subscription |
| Size | 7 MB | 16 MB |
| Requires iOS | **12.4** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Prashanth Brahmandam](https://appshunter.io/developer/1532661953) | [Iana Barda](https://appshunter.io/developer/1790728728) |

## What reviewers say

### UnitSwap

[App page](https://appshunter.io/ios/app/unitswap/id6450141706)

Easily convert between various units like length, weight, and temperature with this simple tool. It offers a user-friendly interface for hassle-free calculations and an ad-free experience.

**Highlights:** Unit conversion, Length conversion, Weight conversion, Temperature conversion, User-friendly interface, Ad-free experience

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

**In-app purchases:** none


### Rock Identifier

[App page](https://appshunter.io/ios/app/rock-identifier-gemstone-id/id6741156875)

Instantly identify gemstones and minerals by snapping a photo. Get accurate value estimates, detailed information on origins and care, and organize your entire collection. Share your discoveries with fellow enthusiasts.

**Highlights:** Instant gemstone identification via photo, Accurate value estimates, Organized gem database, Detailed gem information, Save and share findings

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rock Weekly Pro | $4.99 | per 7 days |
| Rock Weekly Trial | $4.99 | per 7 days |


## Frequently asked questions

### Is UnitSwap free?

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

### Is Rock Identifier free?

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

### Which has better reviews, UnitSwap or Rock Identifier?

UnitSwap is rated higher. UnitSwap averages 5.0 out of 5 from 2 ratings, while Rock Identifier averages 3.6 from 20 ratings.

### Do UnitSwap or Rock Identifier have ads?

Neither UnitSwap nor Rock Identifier 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.*