Comparison

System Guard vs PhoneDiagnostix

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

Head to head
About

System Guard

Monitor your device's performance, storage, and battery health with detailed insights and explanations. It offers hardware diagnostics, network analysis, and helpful widgets to keep you informed about your iPhone, iPad, or Watch.

Highlights
  • Real-time device status overview
  • Detailed battery health and charge cycles
  • Comprehensive device specifications
  • Storage usage and cleanup suggestions
  • Network connection and data usage analysis
  • Hardware diagnostic tests
  • Home Screen and Lock Screen widgets
Features
Read full description

Know your iPhone, iPad and Watch inside out. System Guard shows what your device is, how it is doing right now and whether anything needs your attention - in plain language, with every figure explained. ► AT A GLANCE • One status card: storage, memory, temperature, Low Power Mode, passcode and whether a newer iOS is available for your model • CPU, memory, storage and power as live tiles • Tap any value for a clear explanation of what it means ► BATTERY HEALTH • Real capacity and charge cycles, read from the diagnostics file iOS writes on your device • Your iPad, Apple Watch or a second iPhone too: import their files and see each device under its own name, with this device first • Charts of capacity, cycles and your daily charge range (Pro) • Sync your readings with iCloud across your devices (Pro) • A step-by-step guide to find the file, and a weekly reminder if you like ► EVERY DETAIL OF YOUR DEVICE • Model, chip, GPU, memory, display, cameras, sensors, audio and security • Storage: total, used, free - and what iOS can free up by itself • Compare your device with any other iPhone or iPad ► HISTORY AND ALERTS • Storage, memory and temperature over days and weeks, with charts you can zoom and scroll • A notification before you run out of storage, and when a new iOS version is out ► NETWORK • Connection, addresses, VPN, DNS and cellular technology (LTE, 5G) • Live traffic, and your data use today, yesterday and over 7 and 30 days • Wi-Fi name and access point, and the router • Find the devices on your Wi-Fi network: printers, speakers, TVs and more • Speed test: latency, download and upload ► HARDWARE CHECK-UP • 16 tests: display, touch, speakers, microphone, haptics, vibration, cameras, Face ID or Touch ID, sensors, buttons and more • Ideal before buying or selling a used device • Export a device report as PDF, text or JSON ► WIDGETS, CONTROLS, WATCH AND SHORTCUTS • Home Screen and Lock Screen widgets for storage, memory, CPU and status • Control Center controls for the check-up and the speed test • Apple Watch app with the watch's own figures, your iPhone's status and complications • Shortcuts and Siri: ask for free storage, memory, CPU load and more ► SYSTEM GUARD PRO One purchase, no subscription. Removes all ads and unlocks History and alerts, the full check-up, the network details and the speed test, the devices on your network, the battery charts and full battery details, more devices in Battery health, iCloud sync, the device report, and every widget and Shortcut. ► PRIVACY System Guard reads only what iOS makes available to every app, never changes anything on your device and needs no account. Your history and battery readings stay on your device, unless you sync the battery readings with your own iCloud, which only you can see. The free version shows ads; you can choose non-personalized ads at any time.

About

PhoneDiagnostix

Features
Read full description

PhoneDiagnostix zeigt dir in Echtzeit alle wichtigen Systemdaten deines iPhones – übersichtlich und auf einen Blick. FUNKTIONEN: • CPU-Auslastung in Echtzeit • RAM-Verbrauch und freier Speicher • Akkustand, Ladestand und Wärmezustand • Netzwerkgeschwindigkeit (WLAN & Mobilfunk) • Speichernutzung intern • Vollständige Geräteinformationen

Screenshots

System Guard4 screens
PhoneDiagnostix4 screens

Verdict

The call

The clearest difference is in-app purchases: PhoneDiagnostix at none against System Guard's 1. PhoneDiagnostix also leads on ads (none vs shown). System Guard's advantage is update cadence (weekly vs monthly). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. System Guard sells 1 one-off in-app purchase. PhoneDiagnostix asks for nothing beyond the download.

UpkeepUpdate frequency

System Guard ships an update weekly, PhoneDiagnostix monthly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
System Guard versus PhoneDiagnostix: the parameters behind the verdict, then further details
ParameterSystem GuardPhoneDiagnostix
PriceFreeFree
Rating4.5 (979 ratings) — better—
Positive reviews80.0% of reviews—
Number of ratings979 — better—
Update frequencyWeekly — betterMonthly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS17.0 — better18.0
Further details — not scored
Size24 MB2 MB
Age rating4+4+
DeveloperRBT Digital LLCSebastian Kirschner

In-app purchases

1 purchases

System Guard

One-time1
  • System Guard Pro$2.99
None

PhoneDiagnostix

No in-app purchases

Questions

Is System Guard free?
System Guard is free to download, with in-app purchases available.
Is PhoneDiagnostix free?
PhoneDiagnostix is free to download, with no in-app purchases.
Do System Guard or PhoneDiagnostix have ads?
System Guard shows ads; PhoneDiagnostix does not.
Which is updated more often, System Guard or PhoneDiagnostix?
System Guard ships an update weekly, and PhoneDiagnostix monthly. Most recently, System Guard was updated on November 3, 2026 and PhoneDiagnostix on October 31, 2026.

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