# Firmware Update Tool vs Device System Services

The clearest difference is rating: Device System Services at 4.5 against Firmware Update Tool's 4.0. Device System Services also leads on review sentiment (52% vs 20%) and update cadence (every 4 months vs every 20 months). Firmware Update Tool's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Device System Services sells 1 one-off in-app purchase. Firmware Update Tool asks for nothing beyond the download.

Device System Services holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Device System Services has 394 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 20% of Firmware Update Tool's written reviews are positive against 52% of Device System Services's.

Firmware Update Tool ships an update every 20 months, Device System Services every 4 months. The most recent releases landed on September 9, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Firmware Update Tool | Device System Services |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (5 ratings)](https://appshunter.io/ios/app/firmware-update-tool/id662842350/reviews) | **[4.5 (394 ratings)](https://appshunter.io/ios/app/device-system-services-tools/id1126227676/reviews)** |
| Number of ratings | 5 | **394** |
| Positive reviews | 20.0% of reviews | **51.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 20 months | **Every 4 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 9 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OKI ELECTRIC INDUSTRY COMPANY,LIMITED](https://appshunter.io/developer/576590380) | [Albert Parti](https://appshunter.io/developer/534966701) |

## What reviewers say

### Firmware Update Tool

[App page](https://appshunter.io/ios/app/firmware-update-tool/id662842350)

This free utility allows users to update the firmware on OKI printers and multifunction printers over a network. It can detect compatible devices, check for available updates online, and initiate the download and installation process.

**Highlights:** Update OKI printer firmware, List network-connected OKI printers, Check for available firmware updates, Automatic firmware download, Initiate firmware installation

**In-app purchases:** none


### Device System Services

[App page](https://appshunter.io/ios/app/device-system-services-tools/id1126227676)

Monitor your device's hardware, network, memory, and storage with detailed insights and performance tracking. Includes diagnostic tools for network analysis and storage management. Offers widgets for real-time system information.

**Highlights:** Hardware specifications, Network status and diagnostics, Memory usage monitoring, Ping, LAN Scan, Port Scan tools, Storage management, System information widgets

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads System Service | $1.99 | one-time |

**What reviewers like**

- 👍 Clean and easy-to-use interface
- 🚀 Fast and responsive performance
- 📊 Comprehensive system information display
- 🌐 Useful network information details
- ⏱️ Shows device uptime information

**What reviewers complain about**

- 📺 Excessive full-screen video advertisements
- 🔊 Intrusive ads with sound that startle users
- ⚠️ Misleading security/storage warning popups
- 🎮 Irrelevant ads (e.g., game ads on iOS)
- 💰 Ads present even in paid version

**Reported bugs**

- App crashes on startup/launch
- Crashes when network module acquires external IP
- Requires airplane mode or disabled connectivity to function
- Incorrect device specifications (resolution, model variants)
- Static pie charts instead of dynamic system statistics

**Requested features**

- Option to delete accidentally copied items
- System reset functionality to restore original settings
- Camera information display
- External USB disk space usage tracking
- Memory cleaning/optimization features


## Frequently asked questions

### Is Firmware Update Tool free?

Firmware Update Tool is free to download, with no in-app purchases.

### Is Device System Services free?

Device System Services is free to download, with in-app purchases available.

### Which has better reviews, Firmware Update Tool or Device System Services?

Device System Services is rated higher. Firmware Update Tool averages 4.0 out of 5 from 5 ratings, while Device System Services averages 4.5 from 394 ratings.

### Do Firmware Update Tool or Device System Services have ads?

Device System Services shows ads; Firmware Update Tool does not.

### Which is updated more often, Firmware Update Tool or Device System Services?

Firmware Update Tool ships an update every 20 months, and Device System Services every 4 months. Most recently, Firmware Update Tool was updated on September 9, 2026 and Device System Services on September 19, 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.*