Lirum Device Info vs Mobile Master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lirum Device Info
Monitor real-time system activity and view detailed device specifications using public APIs. Track CPU, memory, battery, and live sensor data. Access published specs like dimensions and display resolution.
- Real-time CPU and memory usage
- Battery level and charging state
- Live sensor data (accelerometer, gyroscope, etc.)
- Location readouts with accuracy
- Bluetooth LE advertisement info
- Detailed device specifications
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Lirum Device Info shows real‑time system activity and published device specifications using Apple’s public APIs. What you can see CPU activity and memory usage (system‑wide, approximate). Battery level & charging state (from iOS). Live sensors: accelerometer, gyroscope, magnetometer, barometer. Location readouts with accuracy and altitude (permission required). Bluetooth LE: nearby advertisement info (name/UUID/RSSI). Device specs: dimensions, weight, display resolution, wireless bands, and environmental limits, sourced from Apple’s Tech Specs for each model. What we intentionally don’t do: No diagnostics or hardware health assessments. No battery wear/voltage/cycle count and no time‑remaining estimates. No memory “optimizers” or performance‑boosting claims. Frameworks used: UIKit (UIDevice battery level/state), Foundation (ProcessInfo thermal & Low Power Mode), Core Motion, Core Location, and Core Bluetooth. Privacy: Sensor and network data are shown on‑device only. Location is used solely to display location/accuracy and is not stored or sent anywhere.
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 Lirum Device Info's $299.99. Mobile Master also leads on ratings volume (1.2K vs 11) and update cadence (every 6 days vs every 4 weeks). Lirum Device Info's advantage is in-app purchases (none vs 3) and ads (none vs shown). On rating, device support and iOS requirement 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; Lirum Device Info costs $299.99 up front. Mobile Master sells 3 in-app purchases, starting at $0.49 per month. Lirum Device Info asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.5 for Lirum Device Info against 4.5 for Mobile Master. That said, the two scores are not equally well evidenced: Mobile Master has 1.2K ratings behind it against 11, so its average is the more settled of the two. Written reviews are what separate them: 52% of Lirum Device Info's written reviews are positive against 72% of Mobile Master's.
Lirum Device Info ships an update every 4 weeks, Mobile Master every 6 days. The most recent releases landed on October 17, 2026 and October 8, 2026 respectively.
| Parameter | Lirum Device Info | Mobile Master |
|---|---|---|
| Price | $299.99 | Free — better |
| Rating | 4.5 (11 ratings) | 4.5 (1.2K ratings) |
| Positive reviews | 52.0% of reviews | 72.3% of reviews — better |
| Number of ratings | 11 | 1.2K — better |
| Update frequency | Every 4 weeks | Every 6 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.6 |
| Further details — not scored | ||
| Size | 100 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Lirum Labs Technologies Inc. | 东海 刘 |
Customer experience
Lirum Device Info
Mobile Master
Bugs and requests
Lirum Device Info
Reported bugs
3 issues- Unable to detect newer iPhone and iPad models
- Paid version lacks features compared to free version
- Crashes and freezes on some devices
Requested features
3 requests- Update database for latest iPhone and iPad models
- Add support for iOS 12 and newer
- Improve app stability and performance
Mobile Master
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Lirum Device Info
No in-app purchases
Mobile Master
- Pro Monthly$0.491 Month
- Pro Annual$2.991 Year
- Remove ads$1.99
Questions
Is Lirum Device Info free?
Is Mobile Master free?
Which has better reviews, Lirum Device Info or Mobile Master?
Do Lirum Device Info or Mobile Master have ads?
Which is updated more often, Lirum Device Info or Mobile Master?
Other comparisons
