Comparison

System Activity Monitors vs iChecker

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

iChecker

Monitor your iOS device's RAM and disk space usage. It also helps manage your contacts by detecting and merging duplicates, and cleaning up empty entries. The app can also find and remove duplicate photos to free up storage.

Highlights
  • Check RAM usage percentage
  • View free disk space
  • Detect and merge duplicate contacts
  • Remove contacts without name/email
  • Analyze and clean duplicate photos
  • Refresh data button
Features
Read full description

This app will check your iOS devices by it's RAM usage status, indicates the RAM in percentage. Also, this app will check your iOS devices Disk Size to let you know how much free disk space is available in your Phone. Cool Design, simply open the app to check your FREE RAM & Disk Space! For your convenience, we have added Refresh button to make sure you're having the correct data. The APP analyzes duplicate similar pictures in the album, displays them in groups and can be cleaned in one click, saving your phone space. Your contacts are the most important data in your phone which easily becomes messy if not consistently updated. This app easily helps you detect and merge duplicate contacts, remove contacts without name or email. Your contacts will not be uploaded to a third-party server.

Screenshots

System Activity Monitors4 screens
iChecker4 screens

Verdict

The call

The clearest difference is review sentiment: System Activity Monitors at 76% against iChecker's 25%. System Activity Monitors also leads on rating (4.2 vs 3.6) and ads (none vs shown). iChecker's advantage is iOS requirement (9.0 vs 13.0). On price, update cadence, 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 iChecker sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

System Activity Monitors holds the better App Store score, 4.2 against 3.6. That said, the two scores are not equally well evidenced: System Activity Monitors has 774 ratings behind it against 54, 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 25% of iChecker's.

UpkeepUpdate frequency

System Activity Monitors ships an update every 3 months, iChecker every 2 months. The most recent releases landed on October 13, 2026 and October 12, 2026 respectively.

Scorecard5 real differences · 5 level
System Activity Monitors versus iChecker: the parameters behind the verdict, then further details
ParameterSystem Activity MonitorsiChecker
PriceFreeFree
Rating4.2 (774 ratings) — better3.6 (54 ratings)
Positive reviews76.0% of reviews — better25.0% of reviews
Number of ratings774 — better54
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.09.0 — better
Further details — not scored
Size28 MB16 MB
Age rating4+4+
DeveloperTekton Technologies (P) Ltd.泽辉 王

Customer experience

System Activity Monitors

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

iChecker

All ratings54 ratings
Positive59.3%
Neutral9.3%
Negative31.5%
Written reviews64 reviews
Positive25.0%
Neutral6.3%
Negative68.8%

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

iChecker

Not enough reviews yet to summarise bugs or requests.

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
1 purchases

iChecker

One-time1
  • Permanently Remove ads$1.99

Questions

Is System Activity Monitors free?
System Activity Monitors is free to download, with in-app purchases available.
Is iChecker free?
iChecker is free to download, with in-app purchases available.
Which has better reviews, System Activity Monitors or iChecker?
System Activity Monitors is rated higher. System Activity Monitors averages 4.2 out of 5 from 774 ratings, while iChecker averages 3.6 from 54 ratings.
Do System Activity Monitors or iChecker have ads?
iChecker shows ads; System Activity Monitors does not.
Which is updated more often, System Activity Monitors or iChecker?
System Activity Monitors ships an update every 3 months, and iChecker every 2 months. Most recently, System Activity Monitors was updated on October 13, 2026 and iChecker on October 12, 2026.

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