# WinDat Opener vs Device Tester Pro

The clearest difference is rating: Device Tester Pro at 4.1 against WinDat Opener's 2.3. Device Tester Pro also leads on update cadence (fortnightly vs every 5 months) and ratings volume (474 vs 3). WinDat Opener's advantage is iOS requirement (12.0 vs 16.0). On review sentiment, ads, in-app purchases and device support there is nothing between them.

WinDat Opener costs $5.99 and Device Tester Pro $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Device Tester Pro holds the better App Store score, 4.1 against 2.3. That said, the two scores are not equally well evidenced: Device Tester Pro has 474 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 63% of WinDat Opener's written reviews are positive against 64% of Device Tester Pro's.

WinDat Opener ships an update every 5 months, Device Tester Pro fortnightly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | WinDat Opener | Device Tester Pro |
| --- | --- | --- |
| Price | $5.99 | **$1.99** |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/windat-opener/id404795709/reviews) | **[4.1 (474 ratings)](https://appshunter.io/ios/app/device-tester-prosystem-check/id849114011/reviews)** |
| Number of ratings | 3 | **474** |
| Positive reviews | 62.5% of reviews | **64.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Monetization | Paid | **Free** |
| Size | 2 MB | 7 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alexander McGuffog](https://appshunter.io/developer/404795712) | [Phan Nhut](https://appshunter.io/developer/849063753) |

## What reviewers say

### WinDat Opener

[App page](https://appshunter.io/ios/app/windat-opener/id404795709)

Easily open and extract attachments from winmail.dat email files. This utility integrates with your device's file manager and cloud storage, allowing you to preview or open embedded documents and images with other applications.

**Highlights:** Decodes all winmail.dat files, iOS 17 and iPadOS 17 support, Drag-and-drop support on iPads, File manager integration (iCloud, Dropbox), Extracts and previews embedded attachments, Supports various document and image formats

**Features:** Vision Pro support

**In-app purchases:** none


### Device Tester Pro

[App page](https://appshunter.io/ios/app/device-tester-prosystem-check/id849114011)

Monitor your device's core system components. Track memory, disk, CPU, network, and battery usage. Gain insights into your system's performance and health.

**Highlights:** Check RAM usage, Monitor disk usage, Track CPU usage, View network activity, Analyze battery status, System information overview

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Cleans memory and frees up space
- 👍 Works well on older devices
- ⭐ Excellent app, highly recommended

**What reviewers complain about**

- 🐛 Crashes frequently
- 🐛 Doesn't work with latest iOS versions
- 💰 Paid version required for full functionality

**Reported bugs**

- Scan function doesn't complete
- Processes list always shows zero
- Crashes on iPhone 15 Pro Max

**Requested features**

- Automatic memory cleaning
- Detailed process information
- Compatibility with newer iOS versions


## Frequently asked questions

### Is WinDat Opener free?

WinDat Opener costs $5.99, with no in-app purchases.

### Is Device Tester Pro free?

Device Tester Pro costs $1.99, with no in-app purchases.

### Which has better reviews, WinDat Opener or Device Tester Pro?

Device Tester Pro is rated higher. WinDat Opener averages 2.3 out of 5 from 3 ratings, while Device Tester Pro averages 4.1 from 474 ratings.

### Do WinDat Opener or Device Tester Pro have ads?

Neither WinDat Opener nor Device Tester Pro shows ads.

### Which is updated more often, WinDat Opener or Device Tester Pro?

WinDat Opener ships an update every 5 months, and Device Tester Pro fortnightly. Most recently, WinDat Opener was updated on October 26, 2026 and Device Tester Pro on October 24, 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.*