Comparison

SYS Activity Manager vs Lirum Device Info 2

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SYS Activity Manager

Monitor your device's background processes, battery life, and network activity. This app provides insights into memory usage, disk space, and connection statuses, helping you diagnose network issues and optimize performance. It's designed for both expert and non-expert users.

Highlights
  • Monitor background processes and apps
  • Track device battery life and charging status
  • Analyze network connection and speed
  • Summarize disk usage
  • Visualize memory allocation
  • Diagnose network problems
Features
Read full description

• Learn about which Background Processes and Apps are running • Monitor iPad, iPod, iPhone Battery Life • Monitor LTE, 3G and WiFi network and speed • Summarizes your disk usage • Helpful tool to diagnosis network problem by connection status. • iOS 8 and iPhone 6 support • It is the application designed for Expert and Non-expert. The key features of this application include effectively taking care of network identification and bandwidth testing, see battery life and many more. Using “SYS Activity Manager” regularly will help you to monitor the battery life, test the WiFi/3G network. The new version of “SYS Activity Manager” is an universal application so you can use it in any device within iPhone, iPod Touch and iPad. Users Review: • Since I installed this app I have seen a huge difference in my battery life. it's an awesome app to have. - By p0ppetz • This app works nicely and I have noticed improvements in the operation of my iPhone already. - By brettwad Key Features: Memory (RAM) • Easy understanding of device memory status. • Visualization of Wired, Active, Inactive, Free memory allocation. Process • List display of running Background Applications and other System Processes. • How to close/manage Background Apps. Battery • Multiple visual displays detailing battery status and use. • Alarms to indicate charging status complete w/ accurate ‘time-to-charge’ displays. • 100% charge notification, effective when you are on a rush. • Full charge notification to prevent over-charging. • Configurable Full Charge & battery Maintenance alerts. • Tips on maximizing battery life when power not available. Note: Please discharge you battery at level 10% and complete full charge to adjust battery health first time. Disk • Visualization of disk space status and usage. Network • Detecting cellular data network & Wi-Fi network connection statuses. • IP & MAC Address display when available. • Internet connection speed test.

About

Lirum Device Info 2

This app provides in-depth system monitoring and hardware insights for your iPhone and iPad. It offers detailed information on CPU, memory, storage, battery, sensors, and more, along with practical testing tools. Ideal for users who want to understand their device's performance and capabilities.

Highlights
  • CPU, Memory, and Storage Monitoring
  • Detailed Hardware and Sensor Information
  • Battery and Thermal Monitoring
  • Network and Cellular Band Analysis
  • NFC Read/Write and Tag Management
  • Biometrics and AR Tool
  • Device Comparison and Timeline
Features
Read full description

Meet Lirum Info, the ultimate system monitoring and hardware toolkit for your iPhone, iPad, Mac, and Vision Pro. Built for developers, IT professionals, and power users, it’s also friendly for anyone who wants to know their device inside and out. Monitor performance in real time, get detailed hardware insights, and run practical tests – all in one elegant app with more than 55 tools. Feature list: Status & Performance - Benchmark Tool - CPU and Memory Tools with real-time graphs - Storage Tool: usage graphs, per-partition details, and automatic detection of external USB/SD/network drives - Battery Tool - Thermals Tool with thermal pressure alerts - Timeline Tool: interactive history of device generations - PiP Monitor: system metrics in picture-in-picture Network & Connectivity - Internet Speed Test with history - Connection Rate and Throughput monitoring - Network Interface and Cellular Band details - Network Scanner, Bonjour browser, and Port Scan for LAN discovery - Ping, Traceroute, DNS Lookup, and WHOIS - Routing Table, IP Calculator, Wake-on-LAN, UPnP/DLNA discovery, TLS inspection - Bluetooth Tool: automatic BLE device discovery with signal strength - Metrics Client/Server: stream realtime metrics between devices Sensors & Motion - Accelerometer, Gyroscope, and Magnetometer - GPS/Location, Barometer, and Proximity Sensor - Biometrics Tool (Face ID, Touch ID, Optic ID) Media & I/O - Camera Tool - Video Tool: record or inspect clips with playback, track, and metadata details - Microphone Tool: real-time input with waveform and amplitude views - Speaker Tool: audio output and volume level testing - NFC Read/Write Tools: tag scanning, NDEF parsing, and a saved tags library - Vibration (haptics) and Flashlight testing Display & Interaction - Display Tool: diagonal, resolution, pixel density, refresh rate, color gamut, and connection details for every display, with an immersive globe on Vision Pro - FPS Tool: confirmed frame-rate measurement and motion comparison at four target rates - Display Patterns Tool: screen test, dead pixel, and color calibration patterns - Colors Tool - Touchscreen Tool - AR (Augmented Reality) Tool Utilities & Testing - AI Assistant: ask about specs, performance, or how to fix problems – grounded in live system information and running fully on-device - Local AI Model Tool: run LLMs completely offline with the official LiteRT-LM runtime, custom GGUF models, a unified model library, and memory/CPU/performance measurement - Comparison Tool: side-by-side specs against any iPhone, iPad, Mac, or Vision Pro - Device Grid Tool: the complete Apple hardware catalog in a searchable, sortable spreadsheet grid, including every Mac - Manual Test Wizard and a combined device Report Device information fields: General, Hardware Specs, Display, Camera, Network, and Location. Also included: - Home screen widgets in multiple sizes with intelligent refresh scheduling - Apple Watch companion app: shared metrics, streaming iPhone telemetry, and on-watch sensor mode - visionOS: spatial computing, immersive space support, 3D object interaction, and hand tracking – add any usdz model from Files to your 3D space

Screenshots

SYS Activity Manager3 screens
Lirum Device Info 24 screens

Verdict

The call

The clearest difference is rating: Lirum Device Info 2 at 4.0 against SYS Activity Manager's 2.6. Lirum Device Info 2 also leads on review sentiment (77% vs 42%) and update cadence (every 3 weeks vs every 4 months). SYS Activity Manager's advantage is in-app purchases (none vs 3) and iOS requirement (8.0 vs 15.2). On price and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Lirum Device Info 2 sells 3 in-app purchases, starting at $0.99 per month. SYS Activity Manager asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Lirum Device Info 2 holds the better App Store score, 4.0 against 2.6. Both are backed by a comparable volume of ratings — 89 and 288 respectively. Written reviews point the same way: 42% of SYS Activity Manager's written reviews are positive against 77% of Lirum Device Info 2's.

UpkeepUpdate frequency

SYS Activity Manager ships an update every 4 months, Lirum Device Info 2 every 3 weeks. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.

Scorecard8 real differences · 2 level
SYS Activity Manager versus Lirum Device Info 2: the parameters behind the verdict, then further details
ParameterSYS Activity ManagerLirum Device Info 2
PriceFreeFree
Rating2.6 (89 ratings)4.0 (288 ratings) — better
Positive reviews42.1% of reviews77.1% of reviews — better
Number of ratings89288 — better
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac, Apple TV, Apple Watch, Vision Pro — better
Requires iOS8.0 — better15.2
Further details — not scored
Size19 MB995 MB
Age rating4+4+
DeveloperSohel MazumderLirum Labs Technologies Inc.

Customer experience

SYS Activity Manager

All ratings89 ratings
Positive37.1%
Neutral6.7%
Negative56.2%
Written reviews171 reviews
Positive42.1%
Neutral8.2%
Negative49.7%

Lirum Device Info 2

All ratings288 ratings
Positive74.7%
Neutral7.3%
Negative18.1%
Written reviews923 reviews
Positive77.1%
Neutral7.2%
Negative15.7%

Bugs and requests

SYS Activity Manager

Not enough reviews yet to summarise bugs or requests.

Lirum Device Info 2

Reported bugs

3 issues
  • Crashes on iPad Pro and iPhone 12
  • Battery health and wear level not working
  • Incorrect device compatibility information

Requested features

4 requests
  • Personalized home screen and notifications
  • Advanced battery monitoring features
  • Support for latest iOS and devices
  • Benchmark testing capabilities

In-app purchases

None

SYS Activity Manager

No in-app purchases

3 purchases

Lirum Device Info 2

Subscriptions2
  • Premium Monthly1 Month trial$0.991 Month
  • Premium Yearly1 Month trial$9.991 Year
One-time1
  • Lifetime Premium$199.99

Questions

Is SYS Activity Manager free?
SYS Activity Manager is free to download, with no in-app purchases.
Is Lirum Device Info 2 free?
Lirum Device Info 2 is free to download, with in-app purchases available.
Which has better reviews, SYS Activity Manager or Lirum Device Info 2?
Lirum Device Info 2 is rated higher. SYS Activity Manager averages 2.6 out of 5 from 89 ratings, while Lirum Device Info 2 averages 4.0 from 288 ratings.
Do SYS Activity Manager or Lirum Device Info 2 have ads?
Neither SYS Activity Manager nor Lirum Device Info 2 shows ads.
Which is updated more often, SYS Activity Manager or Lirum Device Info 2?
SYS Activity Manager ships an update every 4 months, and Lirum Device Info 2 every 3 weeks. Most recently, SYS Activity Manager was updated on October 9, 2026 and Lirum Device Info 2 on October 15, 2026.

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