# Mystery Client vs Grei Team

The clearest difference is update cadence: Mystery Client at every 3 weeks against Grei Team's every 3 months. Grei Team's advantage is iOS requirement (13.0 vs 15.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Mystery Client ships an update every 3 weeks, Grei Team every 3 months. The most recent releases landed on October 17, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Mystery Client | Grei Team |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/mystery-client/id1380166821/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 76.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free | — |
| Size | 103 MB | 13 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mebius srl](https://appshunter.io/developer/609711569) | [Xgroup srl](https://appshunter.io/developer/1190334689) |

## What reviewers say

### Mystery Client

[App page](https://appshunter.io/ios/app/mystery-client/id1380166821)

Become a mystery shopper to evaluate services and products. Complete free training, choose assignments near you, and share your feedback. Get paid for completed tasks with no upfront costs or obligations.

**Highlights:** Mystery shopping assignments, Free training courses, Flexible task selection, Feedback submission, Payment via bank transfer, Amazon, or PayPal

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

**In-app purchases:** none


### Grei Team

[App page](https://appshunter.io/ios/app/grei-team/id1620532841)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mystery Client free?

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

### Is Grei Team free?

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

### Do Mystery Client or Grei Team have ads?

Neither Mystery Client nor Grei Team shows ads.

### Which is updated more often, Mystery Client or Grei Team?

Mystery Client ships an update every 3 weeks, and Grei Team every 3 months. Most recently, Mystery Client was updated on October 17, 2026 and Grei Team on October 25, 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.*