# Device Tester Pro vs GEAK NAS

The clearest difference is price: GEAK NAS at Free against Device Tester Pro's $1.99. Device Tester Pro's advantage is in-app purchases (none vs 3). On update cadence, ads, device support and iOS requirement there is nothing between them.

GEAK NAS is free to download; Device Tester Pro costs $1.99 up front. GEAK NAS sells 3 in-app purchases, starting at $4.99 per month. Device Tester Pro asks for nothing beyond the download.

Device Tester Pro ships an update fortnightly, GEAK NAS every 8 days. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Device Tester Pro | GEAK NAS |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.1 (472 ratings)](https://appshunter.io/ios/app/device-tester-prosystem-check/id849114011/reviews)** | — |
| Number of ratings | **472** | — |
| Positive reviews | 64.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 8 days** |
| Monetization | Free | — |
| Size | 7 MB | 73 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Phan Nhut](https://appshunter.io/developer/849063753) | [YOM LIMITED](https://appshunter.io/developer/6786125651) |

## What reviewers say

### 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


### GEAK NAS

[App page](https://appshunter.io/ios/app/geak-nas/id6764000090)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GEAK NAS Plus - Monthly | $4.99 | per month |
| GEAK NAS Plus Annual | $47.99 | per year |
| Lifetime | $179.00 | one-time |


## Frequently asked questions

### Is Device Tester Pro free?

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

### Is GEAK NAS free?

GEAK NAS is free to download, with in-app purchases available.

### Do Device Tester Pro or GEAK NAS have ads?

Neither Device Tester Pro nor GEAK NAS shows ads.

### Which is updated more often, Device Tester Pro or GEAK NAS?

Device Tester Pro ships an update fortnightly, and GEAK NAS every 8 days. Most recently, Device Tester Pro was updated on October 29, 2026 and GEAK NAS on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*