CPU X vs Mobile Master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CPU X
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.
- System Information
- CPU Frequency (Max & Instantaneous)
- Memory Size
- SoC and Device Model Identification
- Firmware Information
- Today Widget
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CPU X is the ultimate hardware monitoring tool for your iOS devices. Explore the deep architecture of your device with real-time analytics and stunning visual dashboards. Whether you are a tech enthusiast wanting to check real-time CPU frequency, memory usage, and battery diagnostics, or just curious about your device's exact hardware specifications (Processor, NPU, GPU, Cache), CPU X provides everything in a beautifully designed "Liquid Glass" interface. Stay connected to your device's heartbeat with our exclusive Dynamic Island integrations and Interactive Widgets.
Mobile Master
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.
- 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
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Quickly and accurately measure real cpu frequency and frequency reduction Mobile Master is a free tool to provide information about your device - cpu , operating system , memory, GPU, network and battery. - CPU : Processor , real frequency, frequency ratio,frequency reduction, etc. - General : Screen resolution, size, density, etc. - Battery : Desigin capacity. - Network : IP , download/upload speed , etc. - GPU : GPU Type , extentions. - RAM : Total ram , used ram , etc. - Sensors: Acceleration,rotation,magnetic field,pressure and distance Terms of Use：https://m.591master.com/m/uiforum/getpage.html?key=cputerms Privacy Policy：https://m.591master.com/m/uiforum/getpage.html?key=cpuprivacy
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | CPU X | Mobile Master |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.4 (309 ratings) | 4.5 (1.2K ratings) — better |
| Positive reviews | 38.9% of reviews | 72.3% of reviews — better |
| Number of ratings | 309 | 1.2K — better |
| Update frequency | Every 6 weeks | Every 6 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Best chart rank | #194 — better | — |
| Devices | iPhone, iPad, Apple TV | iPhone, iPad, iPod |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | 恒俭 董 | 东海 刘 |
Customer experience
CPU X
Mobile Master
Bugs and requests
CPU X
Reported bugs
8 issues- 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
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- App crashes on startup
- App doesn't refresh
- Widget doesn't refresh
Requested features
4 requests- Add engineering news for iOS
- Add notifications
- Add RAM clearing functionality
- Add max CPU frequency info
Mobile Master
Not enough reviews yet to summarise bugs or requests.
In-app purchases
CPU X
No in-app purchases
Mobile Master
- Pro Monthly$0.491 Month
- Pro Annual$2.991 Year
- Remove ads$1.99
