# Power PDF Pro vs Device Tester Pro

The clearest difference is rating: Power PDF Pro at 4.8 against Device Tester Pro's 4.1. Device Tester Pro's advantage is update cadence (fortnightly vs every 3 months) and price ($1.99 vs $5.99). On ratings volume, ads, in-app purchases and device support there is nothing between them.

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

Power PDF Pro holds the better App Store score, 4.8 against 4.1. Both are backed by a comparable volume of ratings — 304 and 475 respectively. Written reviews complicate that: 52% of Power PDF Pro's written reviews are positive against 64% of Device Tester Pro's, so the app with the better star average is not the one people write more warmly about.

Power PDF Pro ships an update every 3 months, Device Tester Pro fortnightly. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Power PDF Pro | Device Tester Pro |
| --- | --- | --- |
| Price | $5.99 | **$1.99** |
| Rating | **[4.8 (304 ratings)](https://appshunter.io/ios/app/power-pdf-pro/id592358758/reviews)** | [4.1 (475 ratings)](https://appshunter.io/ios/app/device-tester-prosystem-check/id849114011/reviews) |
| Number of ratings | 304 | **475** |
| Positive reviews | 52.2% of reviews | **64.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Paid | **Free** |
| Size | 56 MB | 7 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ComcSoft Corporation](https://appshunter.io/developer/413971334) | [Phan Nhut](https://appshunter.io/developer/849063753) |

## What reviewers say

### Power PDF Pro

[App page](https://appshunter.io/ios/app/power-pdf-pro/id592358758)

Create, modify, and view PDF documents with advanced features for business professionals. Includes cloud storage integration, file conversion, editing tools, and robust file management.

**Highlights:** Create PDFs from various file types, Convert photos and scans to PDF, Combine, split, and reorder PDF pages, Add password protection, Cloud storage integration (Dropbox, Box, Google Drive), File management and organization, Annotate and bookmark PDFs

**Features:** macOS Compatibility, 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 Power PDF Pro free?

Power PDF Pro 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, Power PDF Pro or Device Tester Pro?

Power PDF Pro is rated higher. Power PDF Pro averages 4.8 out of 5 from 304 ratings, while Device Tester Pro averages 4.1 from 475 ratings.

### Do Power PDF Pro or Device Tester Pro have ads?

Neither Power PDF Pro nor Device Tester Pro shows ads.

### Which is updated more often, Power PDF Pro or Device Tester Pro?

Power PDF Pro ships an update every 3 months, and Device Tester Pro fortnightly. Most recently, Power PDF Pro was updated on October 23, 2026 and Device Tester Pro on October 26, 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.*