Comparison

ATS MQTT Client vs SystemZen

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

Head to head
About

ATS MQTT Client

Monitor and control devices connected to the mqtt.ats.pl service in real-time. Sign in with your account to access all your registered devices directly within the application.

Highlights
  • Real-time device monitoring
  • Device control
  • Integration with mqtt.ats.pl service
  • Account sign-in for device access
  • Supports iPhone, iPad, and iPod
Features
Read full description

Application dedicated for mqtt.ats.pl service. It allows users to monitor their devices, connected with Service, and also to control them in real-time. Thanks to integration with Service all user has to do is sign in with their account and all their devices will be available inside app.

About

SystemZen

Features
Read full description

SystemZen tells you how long your storage will last, and helps it last longer. STORAGE RUNWAY SystemZen reads free space when it opens and after every scan, and turns those real readings into one number: the days until your disk is full at the pace it is filling. After a scan it shows how many days a cleanup would buy back. While it is still learning your pace, it says so instead of guessing. CLEANUP, MY CLUTTER, SPACE LENS Cleanup clears caches, logs and temporary files. My Clutter finds the files and photos you have twice. Space Lens shows where the space went, folder by folder. PERFORMANCE, INTERNET, PROTECTION CPU, memory and login items on Mac; heat, power mode and refresh on iPhone and iPad. Live network use. The permissions and privacy traces worth a look. SIRI, SHORTCUTS, WIDGET Ask “How much runway does SystemZen have?” and the answer comes from your own readings. Start a scan or open any page from Siri, Shortcuts or Spotlight, and keep the Runway widget on your Home Screen. MY ACTIVITY Sign in and every scan and cleanup appears on your Mac, iPhone and iPad. HONEST BY DESIGN Every number comes from your device. Mac cleanups go to the Trash first. Your files are never uploaded. SYSTEMZEN PRO Free includes scans, Runway and a starter cleanup. Pro unlocks unlimited cleanup, duplicate removal, every tool in My Tools, scheduled maintenance and background protection. Try the annual plan free for 7 days. LEGAL Terms of Use (EULA): https://softflourish.com/systemzen/terms Privacy Policy: https://softflourish.com/systemzen/privacy SystemZen is built by Soft Flourish.

Screenshots

ATS MQTT Client4 screens
SystemZen4 screens

Verdict

The call

The clearest difference is in-app purchases: ATS MQTT Client at none against SystemZen's 2. ATS MQTT Client also leads on ads (none vs shown) and iOS requirement (13.0 vs 17.0). SystemZen's advantage is update cadence (every 4 days vs every 7 months). On price and device support 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. SystemZen sells 2 in-app purchases, starting at $9.99 per month. ATS MQTT Client asks for nothing beyond the download.

UpkeepUpdate frequency

ATS MQTT Client ships an update every 7 months, SystemZen every 4 days. The most recent releases landed on September 25, 2026 and October 29, 2026 respectively.

Scorecard4 real differences · 6 level
ATS MQTT Client versus SystemZen: the parameters behind the verdict, then further details
ParameterATS MQTT ClientSystemZen
PriceFreeFree
Rating3.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 7 monthsEvery 4 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS13.0 — better17.0
Further details — not scored
Size5 MB52 MB
Age rating4+4+
DeveloperATS sp.j.Fenul LLC

In-app purchases

None

ATS MQTT Client

No in-app purchases

2 purchases

SystemZen

Subscriptions2
  • SystemZen Pro Monthly$9.991 Month
  • SystemZen Pro Annual7 Days trial$79.991 Year

Questions

Is ATS MQTT Client free?
ATS MQTT Client is free to download, with no in-app purchases.
Is SystemZen free?
SystemZen is free to download, with in-app purchases available.
Do ATS MQTT Client or SystemZen have ads?
SystemZen shows ads; ATS MQTT Client does not.
Which is updated more often, ATS MQTT Client or SystemZen?
ATS MQTT Client ships an update every 7 months, and SystemZen every 4 days. Most recently, ATS MQTT Client was updated on September 25, 2026 and SystemZen on October 29, 2026.

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