Comparison

System Activity Monitors vs QR Scanner

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

Head to head
About

System Activity Monitors

Monitor your device's health with this comprehensive tool. Track memory, battery performance, storage, and network details. Get detailed camera information and helpful battery-saving tips to optimize your iPhone.

Highlights
  • Memory usage tracking
  • Battery performance monitoring
  • Device IP and hardware address
  • Battery saving tips
  • Used and free space indicator
  • Detailed camera information
  • System and hardware specs
Features
Read full description

The System Activity Monitor stands out as the most inclusive health check application available on the App Store. It diligently tracks memory usage, battery performance, device details such as IP address and hardware address, provides battery tips, furnishes comprehensive system information, and indicates used space on your iOS device. Now, it comes with enhanced camera information, offering detailed insights into your iPhone camera system, covering telephoto, wide, and ultra-wide lenses. This app serves as a precise tool to monitor battery life, delivering timely tips that maximize your battery usage for an optimal and prolonged battery life. KEY FEATURES: 1. Battery tips are shown to help save battery life while using the iPhone. 2. Tap battery to see the battery capacity for your favorite apps. 3. Shows the used and free space on your iPhone/iPod. 4. Shows the IP address acquired, and hardware address of your device. 5. Displays a long list of device information, like physical specs, hardware info, and many more. These are the different views on the App. Memory view: Shows the used and free iPhone memory available as used by other apps. This is shown in an excellent speedometer animation view. Close out the other apps, and see the memory being reclaimed in this app, when the speedometer shows the free memory available increase. This has an LED indicator with blue, green, yellow and red colors indicating the amount of memory being used. Battery view: This view shows the battery available for discharge, how much time to recharge to make it full, and when it is charged to FULL, displays an indication, as "FULLY CHARGED", as opposed to quick charge. It has glow panels on the top to let you know, how much battery is available. Tap the battery on the fill, to show the detailed break up of battery availability for 3G talk time, browsing, videos, games etc. Animated battery charging with current flashes inside the battery. Space used view: This is shown as a pie-chart that presents the used and free space available on your iOS device. Info view: Now it shows a lot more device information, like system information, camera information, display, hardware and physical characteristics. It shows whether you device is connected to Wi-Fi or cellular and its IP address. ## Few of our user TESTIMONIALS ## $ Way cool This is a terrific system tracker. - Macquest $ Definitely get this App.! Love the cool dashboard. Tells you what's going on in the Apple brain in your iPad or iPhone. This App rules. - Battyguy $ Simple App ! Great tool! Helps to keep your standby time ridiculously long and device running smoothly. - Spader1969. $ I have tried many products like this one and so far I keep coming back to this one. - Markeith3000 Subscription Info Sysmon, our paid subscription product, is paid per year for annual subscriptions, per month for monthly subscriptions, and per week for weekly subscriptions. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Account will be charged for renewal within 24 hours prior to the end of the current period an annual subscription, monthly subscription, and weekly subscription, as the case may be. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription, where applicable.” Privacy policy and terms of use https://tektontek.com/termsofuse.php STAY UPDATED - Website - https://sysmon.tektontek.com Twitter - @AppLifeStyle Facebook - facebook.com/tektontek

About

QR Scanner

Easily scan and generate custom QR codes for various purposes. This app allows you to import codes from images, manage your scan history, and securely create non-expiring codes. Enjoy an ad-free experience with Pro plans.

Highlights
  • Scan unlimited QR codes
  • Generate custom QR codes
  • Import QR codes from gallery
  • Track scan history
  • Face ID authentication
  • Copy, share, and download codes
Features
Read full description

Introducing QR Scanner, the ultimate tool for seamless QR code scanning and generation. With QR Scanner, you have everything you need in one convenient app. No more cluttered screens or multiple downloads. Just effortless QR code management at your fingertips. Scan any QR code with ease using your iPhone's back camera, or even import images from your gallery. Our intuitive interface ensures quick and accurate decoding, giving you instant access to the information you need. Create custom QR codes for websites, emails, texts, Wi-Fi passwords, locations, and more. Simply choose your QR type, input your data, and generate. Sharing is just as easy, allowing you to disseminate information seamlessly across various platforms. KEY FEATURES OF QR SCANNER:: • Effortlessly scan and generate unlimited QR codes. • Scan all QR code formats using your iPhone's camera. • Import and decode QR codes from gallery images. • Create non-expiring QR codes for various purposes. • Keep track of your scans and creations with the history section. • Lightweight design optimized for minimal storage usage. • Support for all QR code formats, including Wi-Fi codes. • Secure your information with Face ID Authentication. • Convenient flashlight and zooming options for enhanced usability. • Easily copy, share, and download QR codes. SUBSCRIBE: Subscribe to our Pro plans for unlimited access to a QR code scanner and generator, and enjoy an ad-free experience. Manage your subscription directly from your iPhone Subscriptions can be managed by the user and auto-renewal can be turned off by going to the Account Settings: Open the Settings app, 1. Tap on your name, 2. Tap Subscription,. 3. Tap the subscription that you want to manage. You can cancel auto-renewal at any time, given that the cancellation is at least 24 hours before the end of the current period. Any unused portion of a free trial period will be forfeited when purchasing an auto-renewing subscription. FEEDBACK: Your feedback fuels our innovation. If you love QR Scanner, please consider leaving us a 5-star rating and review. Have questions or need assistance? Reach out to our top-notch customer support team at hello@thumbmagiclabs.com. Terms of Use: https://thumbmagiclabs.com/terms-and-conditions/ Privacy Policy: https://thumbmagiclabs.com/privacy-policy/

Screenshots

System Activity Monitors4 screens
QR Scanner4 screens

Verdict

The call

The clearest difference is rating: QR Scanner at 4.7 against System Activity Monitors's 4.2. QR Scanner also leads on update cadence (fortnightly vs every 3 months) and review sentiment (89% vs 76%). System Activity Monitors's advantage is ratings volume (779 vs 130). On price, ads, in-app purchases and monetization model 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 Activity Monitors sells 4 in-app purchases, starting at $3.99 per 7 days and QR Scanner sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

QR Scanner holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: System Activity Monitors has 779 ratings behind it against 130, so its average is the more settled of the two. Written reviews point the same way: 76% of System Activity Monitors's written reviews are positive against 89% of QR Scanner's.

UpkeepUpdate frequency

System Activity Monitors ships an update every 3 months, QR Scanner fortnightly. The most recent releases landed on October 22, 2026 and October 20, 2026 respectively.

Scorecard4 real differences · 6 level
System Activity Monitors versus QR Scanner: the parameters behind the verdict, then further details
ParameterSystem Activity MonitorsQR Scanner
PriceFreeFree
Rating4.2 (779 ratings)4.7 (130 ratings) — better
Positive reviews76.0% of reviews89.3% of reviews — better
Number of ratings779 — better130
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.0 — better14.0
Further details — not scored
Size28 MB13 MB
Age rating4+4+
DeveloperTekton Technologies (P) Ltd.Thumbmagic Labs LLP

Customer experience

System Activity Monitors

All ratings774 ratings
Positive79.6%
Neutral5.6%
Negative14.9%
Written reviews658 reviews
Positive76.0%
Neutral7.6%
Negative16.4%

QR Scanner

All ratings123 ratings
Positive91.9%
Neutral4.1%
Negative4.1%
Written reviews28 reviews
Positive89.3%
Neutral3.6%
Negative7.1%

User reviews

System Activity Monitors

From 779 App Store ratings

What we love

  • 💯 Excellent app
  • 🎆 Great app
  • 🔒 Respects privacy
  • 🔋 Helpful battery tips
  • 👍 Simple and straightforward

Room to improve

  • 🐛 Buggy updates
  • 💰 Subscription-based model
  • 🔒 Privacy concerns due to required login
  • 🔍 Limited functionality for free version
  • 🔍 Inaccurate device information

QR Scanner

From 130 App Store ratings

What we love

  • 👍 Easy to use
  • 👍 Simple and straightforward
  • 👍 Useful for creating QR codes
  • 👍 History feature is helpful
  • 👍 Works perfectly

Room to improve

  • 🤔 App automatically prompts for review after onboarding
  • 🤔 Snap photo option sometimes doesn't work as expected

Bugs and requests

System Activity Monitors

Reported bugs

3 issues
  • Crashes on certain devices
  • Login/registration issues
  • Incorrect memory/CPU usage reporting

Requested features

5 requests
  • Ability to close/manage running apps
  • More detailed app-level usage breakdown
  • Dark mode option
  • Widgets for quick access
  • Ability to reclaim memory/free up storage

QR Scanner

Reported bugs

2 issues
  • App automatically takes users to the App Store for review immediately after onboarding
  • Sometimes the snap photo option doesn't work as expected

Requested features

2 requests
  • Ability to add placeholders in one QR code (e.g., multiple links in a contact QR code)
  • Link QR code functionality to a photo

In-app purchases

4 purchases

System Activity Monitors

Subscriptions3
  • Sysmon Pro$3.997 Days
  • Sysmon Pro3 Days trial$6.991 Month
  • Sysmon Pro7 Days trial$29.991 Year
One-time1
  • Real Time Graphs$2.99
4 purchases

QR Scanner

Subscriptions3
  • Monthly$0.991 Month
  • qr_scanner_weekly$0.997 Days
  • qr_scanner_yearly$9.991 Year
One-time1
  • QR Scanner Unlimited$24.99

Questions

Is System Activity Monitors free?
System Activity Monitors is free to download, with in-app purchases available.
Is QR Scanner free?
QR Scanner is free to download, with in-app purchases available.
Which has better reviews, System Activity Monitors or QR Scanner?
QR Scanner is rated higher. System Activity Monitors averages 4.2 out of 5 from 779 ratings, while QR Scanner averages 4.7 from 130 ratings.
Do System Activity Monitors or QR Scanner have ads?
Neither System Activity Monitors nor QR Scanner shows ads.
Which is updated more often, System Activity Monitors or QR Scanner?
System Activity Monitors ships an update every 3 months, and QR Scanner fortnightly. Most recently, System Activity Monitors was updated on October 22, 2026 and QR Scanner on October 20, 2026.

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