# CPU X vs Mobile Master

The clearest difference is price: Mobile Master at Free against CPU X's $2.99. Mobile Master also leads on review sentiment (72% vs 39%) and update cadence (every 6 days vs every 6 weeks). CPU X's advantage is in-app purchases (none vs 3) and ads (none vs shown). On rating and device support there is nothing between them.

Mobile Master is free to download; CPU X costs $2.99 up front. Mobile Master sells 3 in-app purchases, starting at $0.49 per month. CPU X asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.4 for CPU X against 4.5 for Mobile Master. Both are backed by a comparable volume of ratings — 309 and 1.2K respectively. Written reviews are what separate them: 39% of CPU X's written reviews are positive against 72% of Mobile Master's.

CPU X ships an update every 6 weeks, Mobile Master every 6 days. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | CPU X | Mobile Master |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.4 (309 ratings)](https://appshunter.io/ios/app/cpu-x/id1329609396/reviews) | **[4.5 (1.2K ratings)](https://appshunter.io/ios/app/mobile-master-cpu-master/id1329937809/reviews)** |
| Number of ratings | 309 | **1.2K** |
| Positive reviews | 38.9% of reviews | **72.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#194** | — |
| Size | 7 MB | 47 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad, Apple TV | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [恒俭 董](https://appshunter.io/developer/947356968) | [东海 刘](https://appshunter.io/developer/1329937808) |

## What reviewers say

### CPU X

[App page](https://appshunter.io/ios/app/cpu-x/id1329609396)

**Currently charting:** #194 Top Paid · Utilities (US App Store)

This utility app provides detailed hardware and software diagnostics for iOS devices. It displays system information, CPU frequencies, memory size, and device model identification. A convenient Today widget offers quick access to speed-related information.

**Highlights:** System Information, CPU Frequency (Max & Instantaneous), Memory Size, SoC and Device Model Identification, Firmware Information, Today Widget

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

**In-app purchases:** none

**What reviewers like**

- 👍 Displays CPU frequency
- 👍 Shows hardware info
- 👍 Compact and clean UI
- 👍 Useful widget
- 👍 Good for identifying throttling

**What reviewers complain about**

- 👎 Charges without purchase
- 👎 App crashes frequently
- 👎 App doesn't start
- 👎 Only shows info, no optimization
- 👎 Wastes money

**Reported bugs**

- App freezes on current CPU frequency
- App force closes on iPhone Xs Max
- App crashes immediately after installation
- App does not start at all
- App crashes immediately

**Requested features**

- Add engineering news for iOS
- Add notifications
- Add RAM clearing functionality
- Add max CPU frequency info


### Mobile Master

[App page](https://appshunter.io/ios/app/mobile-master-cpu-master/id1329937809)

This free utility app provides detailed information about your device's hardware and software. It measures real CPU frequency, frequency reduction, and offers insights into your screen, battery, network, GPU, RAM, and sensors.

**Highlights:** Measure real CPU frequency, Monitor frequency reduction, View CPU, GPU, and RAM details, Check network speed and IP, Display battery design capacity, Access sensor data

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.49 | per month |
| Pro Annual | $2.99 | per year |
| Remove ads | $1.99 | one-time |


## Frequently asked questions

### Is CPU X free?

CPU X costs $2.99, with no in-app purchases.

### Is Mobile Master free?

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

### Which has better reviews, CPU X or Mobile Master?

Mobile Master is rated higher. CPU X averages 4.4 out of 5 from 309 ratings, while Mobile Master averages 4.5 from 1.2K ratings.

### Do CPU X or Mobile Master have ads?

Mobile Master shows ads; CPU X does not.

### Which is updated more often, CPU X or Mobile Master?

CPU X ships an update every 6 weeks, and Mobile Master every 6 days. Most recently, CPU X was updated on September 22, 2026 and Mobile Master on September 24, 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.*