# Diamond Tester vs SnapGlucose

The clearest difference is in-app purchases: SnapGlucose at none against Diamond Tester's 2. SnapGlucose also leads on update cadence (weekly vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Diamond Tester sells 2 in-app purchases, starting at $7.99 per 7 days. SnapGlucose asks for nothing beyond the download.

Diamond Tester ships an update fortnightly, SnapGlucose weekly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Diamond Tester | SnapGlucose |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (65 ratings)](https://appshunter.io/ios/app/diamond-tester/id6754944343/reviews)** | — |
| Number of ratings | **65** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 27 MB |
| Requires iOS | **17.6** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nicolas Gustavo Melian](https://appshunter.io/developer/1777868675) | [芬 江](https://appshunter.io/developer/1721800705) |

## What reviewers say

### Diamond Tester

[App page](https://appshunter.io/ios/app/diamond-tester/id6754944343)

Identify real diamonds, gems, and crystals with a photo. Get information on authenticity and estimated value. Organize your findings in a personal collection.

**Highlights:** Photo-based diamond identification, Authenticity verification, Estimated diamond value, Gem and crystal analysis, Personal collection organizer

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $7.99 | per 7 days |
| Yearly Plan | $24.99 | per year |


### SnapGlucose

[App page](https://appshunter.io/ios/app/snapglucose/id6757372391)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Diamond Tester free?

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

### Is SnapGlucose free?

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

### Do Diamond Tester or SnapGlucose have ads?

Neither Diamond Tester nor SnapGlucose shows ads.

### Which is updated more often, Diamond Tester or SnapGlucose?

Diamond Tester ships an update fortnightly, and SnapGlucose weekly. Most recently, Diamond Tester was updated on November 5, 2026 and SnapGlucose on October 31, 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.*