# CPU vs Device Kit

The clearest difference is ads: Device Kit at none against CPU's shown. Device Kit also leads on review sentiment (77% vs 61%) and rating (4.9 vs 4.7). CPU's advantage is iOS requirement (15.6 vs 17.0). On price, ratings volume, update cadence and in-app purchases there is nothing between them.

Both are free to download. CPU sells 1 one-off in-app purchase and Device Kit sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Device Kit holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 116 and 93 respectively. Written reviews point the same way: 61% of CPU's written reviews are positive against 77% of Device Kit's.

CPU ships an update fortnightly, Device Kit every 10 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | CPU | Device Kit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (116 ratings)](https://appshunter.io/ios/app/cpu-x/id6448917309/reviews) | **[4.9 (93 ratings)](https://appshunter.io/ios/app/device-kit-phone-temperature/id6761011882/reviews)** |
| Number of ratings | **116** | 93 |
| Positive reviews | 61.1% of reviews | **77.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 10 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 170 MB | 36 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CHENGDU MIAOZHI TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1465440799) | [Shuyang Fan Ziyang Software Development Studio (Individually Owned Business)](https://appshunter.io/developer/1879334973) |

## What reviewers say

### CPU

[App page](https://appshunter.io/ios/app/cpu-x/id6448917309)

This app provides detailed insights into your device's hardware and real-time diagnostics. It also offers tools to optimize storage by compressing media and cleaning contacts, along with a comprehensive suite for testing device sensors and network functions.

**Highlights:** Comprehensive device hardware insights, Real-time diagnostics and sensor testing, Video and image compression, Duplicate contact cleanup, Junk mail and spam message filtering, Network diagnostics tools

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium | $5.99 | one-time |


### Device Kit

[App page](https://appshunter.io/ios/app/device-kit-phone-temperature/id6761011882)

Monitor your device's hardware performance in real-time with detailed CPU, memory, and battery usage. Access a suite of practical tools including weather, network diagnostics, and sensors. Visualize historical data with customizable charts and home screen widgets.

**Highlights:** Real-time CPU, memory, and battery monitoring, Visual data charts for performance trends, Picture-in-Picture mode for continuous monitoring, Customizable home screen widgets, Pro Toolbox with system, environment, and network tools, Sensor data including compass and barometer

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $3.99 | per month |
| Yearly subscription | $7.99 | per year |
| Lifetime Membership | $12.99 | one-time |
| Lifetime Membership | $14.99 | one-time |


## Frequently asked questions

### Is CPU free?

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

### Is Device Kit free?

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

### Which has better reviews, CPU or Device Kit?

Device Kit is rated higher. CPU averages 4.7 out of 5 from 116 ratings, while Device Kit averages 4.9 from 93 ratings.

### Do CPU or Device Kit have ads?

CPU shows ads; Device Kit does not.

### Which is updated more often, CPU or Device Kit?

CPU ships an update fortnightly, and Device Kit every 10 days. Most recently, CPU was updated on November 3, 2026 and Device Kit on October 31, 2026.

---

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