# CPU vs Volume Shader

CPU and Volume Shader both sit at 4.7 stars, but that hides the real split: 100% of Volume Shader's written reviews are positive against 61% of CPU's. Volume Shader also leads on in-app purchases (none vs 1) and update cadence (every 5 days vs fortnightly). CPU's advantage is ratings volume (111 vs 3) and iOS requirement (15.6 vs 18.0). On price, rating, ads and monetization model there is nothing between them.

Both are free to download. CPU sells 1 one-off in-app purchase. Volume Shader asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for CPU against 4.7 for Volume Shader. That said, the two scores are not equally well evidenced: CPU has 111 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 61% of CPU's written reviews are positive against 100% of Volume Shader's.

CPU ships an update fortnightly, Volume Shader every 5 days. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | CPU | Volume Shader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (111 ratings)](https://appshunter.io/ios/app/cpu-x/id6448917309/reviews) | [4.7 (3 ratings)](https://appshunter.io/ios/app/volume-shader/id6802010333/reviews) |
| Number of ratings | **111** | 3 |
| Positive reviews | 61.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 170 MB | 10 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CHENGDU MIAOZHI TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1465440799) | [Shahid Ali](https://appshunter.io/developer/6802010335) |

## 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 |


### Volume Shader

[App page](https://appshunter.io/ios/app/volume-shader/id6802010333)

Explore complex 3D fractal visualizations rendered natively on your iPhone or iPad. Test your device's GPU performance and check system states like thermal and battery.

**Highlights:** Native Metal GPU rendering, Mandelbulb ray marching, Device performance testing, System state monitoring, Interactive 3D exploration, Touch, haptic, and speaker checks

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

**In-app purchases:** none


## Frequently asked questions

### Is CPU free?

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

### Is Volume Shader free?

Volume Shader is free to download, with no in-app purchases.

### Which has better reviews, CPU or Volume Shader?

CPU and Volume Shader are both rated 4.7 out of 5 on the App Store, from 111 and 3 ratings respectively.

### Do CPU or Volume Shader have ads?

Both CPU and Volume Shader show ads.

### Which is updated more often, CPU or Volume Shader?

CPU ships an update fortnightly, and Volume Shader every 5 days. Most recently, CPU was updated on October 12, 2026 and Volume Shader on October 15, 2026.

---

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