# DiamondMaster vs UNI Diamonds

The clearest difference is rating: UNI Diamonds at 5.0 against DiamondMaster's 4.0. UNI Diamonds also leads on in-app purchases (none vs 4) and update cadence (every 6 days vs every 5 weeks). DiamondMaster's advantage is review sentiment (75% vs 67%) and iOS requirement (11.0 vs 15.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. DiamondMaster sells 4 in-app purchases, starting at $6.99 per 7 days. UNI Diamonds asks for nothing beyond the download.

UNI Diamonds holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 5 and 8 respectively. Written reviews complicate that: 75% of DiamondMaster's written reviews are positive against 67% of UNI Diamonds's, so the app with the better star average is not the one people write more warmly about.

DiamondMaster ships an update every 5 weeks, UNI Diamonds every 6 days. The most recent releases landed on September 19, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | DiamondMaster | UNI Diamonds |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (5 ratings)](https://appshunter.io/ios/app/diamondmaster/id447221419/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/uni-diamonds/id1464519723/reviews)** |
| Number of ratings | 5 | **8** |
| Positive reviews | **75.0% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 6 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 35 MB | 58 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wayne Prentice](https://appshunter.io/developer/447221422) | [U.N.I Technologies LTD](https://appshunter.io/developer/1464519722) |

## What reviewers say

### DiamondMaster

[App page](https://appshunter.io/ios/app/diamondmaster/id447221419)

This app provides wholesale diamond pricing and market analysis for professionals. It compares mined and lab-grown diamonds across multiple grading systems and currencies, offering insights into value appreciation and depreciation.

**Highlights:** Compares mined and lab-grown diamonds, Wholesale value comparisons, 13 mediums of exchange and 8 C's, 4 grading systems displayed simultaneously, Dimension guidelines for shapes and carat weights, Tracks value appreciation/depreciation, Global price adjuster

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Wholesale "Bright List" 1 wk. | $6.99 | per 7 days |
| Wholesale "Bright List" 1 mo. | $24.99 | per month |
| Wholesale "Bright List" 6 mo. | $109.99 | per 6 months |
| Wholesale "Bright List" 1 yr. | $199.99 | per year |


### UNI Diamonds

[App page](https://appshunter.io/ios/app/uni-diamonds/id1464519723)

Access a live marketplace for over 2 million diamonds from hundreds of suppliers. Search by specific criteria, get competitive cash prices, and facilitate secure, insured delivery for immediate purchase.

**Highlights:** Live diamond marketplace, 2 million+ stones available, 450+ trusted suppliers, Search by exact criteria, Competitive cash prices, Secure, insured delivery

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

**In-app purchases:** none


## Frequently asked questions

### Is DiamondMaster free?

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

### Is UNI Diamonds free?

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

### Which has better reviews, DiamondMaster or UNI Diamonds?

UNI Diamonds is rated higher. DiamondMaster averages 4.0 out of 5 from 5 ratings, while UNI Diamonds averages 5.0 from 8 ratings.

### Do DiamondMaster or UNI Diamonds have ads?

Neither DiamondMaster nor UNI Diamonds shows ads.

### Which is updated more often, DiamondMaster or UNI Diamonds?

DiamondMaster ships an update every 5 weeks, and UNI Diamonds every 6 days. Most recently, DiamondMaster was updated on September 19, 2026 and UNI Diamonds on September 9, 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.*