# TestApp.io vs ReliaQuest GreyMatter

The clearest difference is rating: TestApp.io at 5.0 against ReliaQuest GreyMatter's 4.6. TestApp.io also leads on iOS requirement (15.0 vs 18.0). ReliaQuest GreyMatter's advantage is ratings volume (31 vs 1). On price, review sentiment, update cadence and ads there is nothing between them.

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

TestApp.io holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: ReliaQuest GreyMatter has 31 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 91% of TestApp.io's written reviews are positive against 92% of ReliaQuest GreyMatter's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | TestApp.io | ReliaQuest GreyMatter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/testappio/id1518972541/reviews)** | [4.6 (31 ratings)](https://appshunter.io/ios/app/reliaquest-greymatter/id1658802347/reviews) |
| Number of ratings | 1 | **31** |
| Positive reviews | 90.9% of reviews | **92.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | Free |
| Size | 63 MB | 71 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TestApp.io FZ LLC](https://appshunter.io/developer/1518972543) | [ReliaQuest, LLC](https://appshunter.io/developer/1491082394) |

## What reviewers say

### TestApp.io

[App page](https://appshunter.io/ios/app/testappio/id1518972541)

This app facilitates easy sharing of mobile applications for testing and feedback. Testers receive notifications for new releases, while developers can manage app versions and team members through a dedicated portal.

**Highlights:** App sharing for testing, Feedback collection, Release management, Tester notifications, Member management

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

**In-app purchases:** none


### ReliaQuest GreyMatter

[App page](https://appshunter.io/ios/app/reliaquest-greymatter/id1658802347)

Investigate and respond to security alerts from anywhere with this mobile app.  Stay informed with push notifications and manage incidents on the go, ensuring you never miss a critical alert.

**Highlights:** Triage security alerts, Investigate on the go, Respond to incidents, Push notifications, Close resolved incidents, View incident history

**In-app purchases:** none

**What reviewers like**

- 👍 Intuitive and organized presentation
- 👍 Generally performs well
- 👍 Enjoyable capabilities
- 👍 Better than web version

**What reviewers complain about**

- 🐛 App resets to home screen when switching apps
- 🐛 Difficult to view tickets without acknowledging/owning
- 🐛 Forced IDP login on every app open
- 🐛 Limited functionality for cloud-based remote users
- 🐛 Legacy plays not runnable from app

**Reported bugs**

- App resets to home screen when switching apps
- Difficult to view tickets without acknowledging/owning
- Forced IDP login on every app open

**Requested features**

- Ability to hold place when switching apps
- Option to view tickets without acknowledging ownership
- Allow running legacy plays from the app for remote users


## Frequently asked questions

### Is TestApp.io free?

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

### Is ReliaQuest GreyMatter free?

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

### Which has better reviews, TestApp.io or ReliaQuest GreyMatter?

TestApp.io is rated higher. TestApp.io averages 5.0 out of 5 from 1 ratings, while ReliaQuest GreyMatter averages 4.6 from 31 ratings.

### Do TestApp.io or ReliaQuest GreyMatter have ads?

Neither TestApp.io nor ReliaQuest GreyMatter shows ads.

### Which is updated more often, TestApp.io or ReliaQuest GreyMatter?

TestApp.io ships an update every 3 weeks, and ReliaQuest GreyMatter every 3 weeks. Most recently, TestApp.io was updated on October 27, 2026 and ReliaQuest GreyMatter 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.*