Comparison

System Guard vs Beoltteok Alarm

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

Head to head
About

System Guard

Gain deep insights into your iPhone, iPad, or Apple Watch. Monitor device health, storage, battery, and network status with clear explanations and historical data. Perform hardware diagnostics and optimize your device's performance.

Highlights
  • Device status overview
  • Detailed battery health and history
  • Comprehensive hardware specifications
  • Storage management and optimization
  • Network analysis and speed tests
  • Hardware diagnostic tests
  • Home/Lock Screen widgets and Siri integration
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 • Charts of capacity, cycles and your daily charge range • A step-by-step guide to find the file, and a weekly reminder if you like • Works for your iPhone, iPad and Apple Watch ► 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 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. The free version shows ads; you can choose non-personalized ads at any time.

About

Beoltteok Alarm

Read full description

Ever set an alarm and then work out in your head how much sleep you're going to get? Beoltteok shows the time remaining under every alarm in the list. No math required. ■ Time remaining, at a glance Each alarm shows something like "in 9 hr 53 min". At the top of the list you see your next alarm and how long you'd sleep if you went to bed now. Alarms you've turned off show nothing. ■ Breaks through Silent and Focus Built on the iOS 26 alarm framework. It rings with the silent switch on, with Sleep Focus enabled, and during Driving Focus. Alarms survive a restart. ■ 12-hour time picker Three wheels — AM/PM, hour, minute. It stays 12-hour even if your device is set to 24-hour time. ■ Repeat however you like Never, every day, weekdays, weekends, or pick individual days. ■ Skip just this once Taking tomorrow off? Skip the next occurrence without turning the alarm off. It returns to normal on its own once that time has passed. ■ Alarm sounds Purpose-made sounds, plus any audio from your Files app. Preview before you choose, and every sound is loudness-matched so switching never surprises you. ■ Widgets and Shortcuts See the countdown on your Home Screen and Lock Screen, and ask Siri for your next alarm or to skip one. ■ No ads, no account, no data collection Every feature is free. There is no server; alarms stay on your device. Tipping the developer is optional and unlocks nothing.

Screenshots

System Guard4 screens
Beoltteok Alarm4 screens

Verdict

The call

The clearest difference is ads: Beoltteok Alarm at none against System Guard's shown. System Guard's advantage is device support (3 vs 1) and iOS requirement (17.0 vs 26.1). On price, update cadence and in-app purchases 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 and Beoltteok Alarm sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

System Guard ships an update every 10 days, Beoltteok Alarm weekly. Both last shipped on October 26, 2026.

Scorecard3 real differences · 7 level
System Guard versus Beoltteok Alarm: the parameters behind the verdict, then further details
ParameterSystem GuardBeoltteok Alarm
PriceFreeFree
Rating4.5 (978 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings978 — better—
Update frequencyEvery 10 daysWeekly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS17.0 — better26.1
Further details — not scored
Size19 MB9 MB
Age rating4+4+
DeveloperRBT Digital LLCSANGHOON LEE

In-app purchases

1 purchases

System Guard

One-time1
  • System Guard Pro$2.99
3 purchases

Beoltteok Alarm

One-time3
  • An Espresso$0.99
  • A Coffee$2.99
  • Another Round$5.99

Questions

Is System Guard free?
System Guard is free to download, with in-app purchases available.
Is Beoltteok Alarm free?
Beoltteok Alarm is free to download, with in-app purchases available.
Do System Guard or Beoltteok Alarm have ads?
System Guard shows ads; Beoltteok Alarm does not.
Which is updated more often, System Guard or Beoltteok Alarm?
System Guard ships an update every 10 days, and Beoltteok Alarm weekly. Most recently, System Guard was updated on October 26, 2026 and Beoltteok Alarm on October 26, 2026.

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