ATS MQTT Client vs SystemZen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Real-time device monitoring
- Device control
- Integration with mqtt.ats.pl service
- Account sign-in for device access
- Supports iPhone, iPad, and iPod
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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.
SystemZen
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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
Verdict
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
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.
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.
| Parameter | ATS MQTT Client | SystemZen |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 7 months | Every 4 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | ATS sp.j. | Fenul LLC |
In-app purchases
ATS MQTT Client
No in-app purchases
SystemZen
- SystemZen Pro Monthly$9.991 Month
- SystemZen Pro Annual7 Days trial$79.991 Year









