# Mobstep OPs vs Diamond Tester

The clearest difference is in-app purchases: Mobstep OPs at none against Diamond Tester's 2. Diamond Tester's advantage is update cadence (fortnightly vs every 6 weeks). 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. Mobstep OPs asks for nothing beyond the download.

Mobstep OPs ships an update every 6 weeks, Diamond Tester fortnightly. The most recent releases landed on October 11, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Mobstep OPs | Diamond Tester |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (64 ratings)](https://appshunter.io/ios/app/diamond-tester/id6754944343/reviews)** |
| Number of ratings | — | **64** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 24 MB | 12 MB |
| Requires iOS | **16.6** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Mohamed Hossam](https://appshunter.io/developer/1695398688) | [Nicolas Gustavo Melian](https://appshunter.io/developer/1777868675) |

## What reviewers say

### Mobstep OPs

[App page](https://appshunter.io/ios/app/mobstep-ops/id6747365239)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Mobstep OPs free?

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

### Is Diamond Tester free?

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

### Do Mobstep OPs or Diamond Tester have ads?

Neither Mobstep OPs nor Diamond Tester shows ads.

### Which is updated more often, Mobstep OPs or Diamond Tester?

Mobstep OPs ships an update every 6 weeks, and Diamond Tester fortnightly. Most recently, Mobstep OPs was updated on October 11, 2026 and Diamond Tester on October 10, 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.*