SiteService vs MGS 400
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SiteService
This application allows service technicians to remotely connect to Danfoss control systems. It provides a live view of plant status, alarms, historical data, and device settings, simplifying common service tasks with an intuitive interface.
- Remote connection to Danfoss control systems
- Live plant status visualization
- Alarm management and history
- Device settings and parameter access
- Manual control of systems
- Address book for site connections
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Danfoss A/S, a world leader in food retail refrigeration and air conditioning controls, presents the Danfoss SiteService App. As the name suggests, the SiteService App offers the Service Technician the ability to remotely connect to a Danfoss controls system. Once authorized, the Technician gains a full visualization of a live plant status, alarms, history graphs and device settings. Built from the ground up, the SiteService App is designed to simplify some of the common service oriented tasks by providing a simple yet powerful interface to the most common areas of the Danfoss controls system. Features -Supporting Danfoss AK-SC 255, AK-SC 355, AK-SM 800 series controllers -Address book for easy site connections -Live plant status (Refrigeration/HVAC/Lighting/Energy/Miscellaneous points) -Device details (Refrigeration/HVAC/Lighting/ Energy /Miscellaneous points) -Read/write parameter access (Refrigeration/HVAC/Lighting/ Energy /Miscellaneous points) -Manual control (Refrigeration/HVAC.Lighting) -Alarm management (view current alarms, acknowledge alarms, acknowledged list, cleared list) -History graphs
MGS 400
This app connects to compatible gas detectors via Bluetooth, simplifying configuration, maintenance, and calibration. It replaces the need for specialized tools and training, ensuring compliance with safety standards.
- Bluetooth connectivity
- Device configuration
- Alarm threshold adjustment
- Maintenance testing
- Zero/span calibration
- Intuitive interface
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The Bacharach MGS-400 App allows users to configure, maintain and interface with compatible MGS-400 gas detectors. Once a Bluetooth connection has been established, the app replaces the need for specialty training/tools and makes compliance with safety standards (ASHRAE 15, EN 378) easy and effective. Features include: - Configuration (Rename device, define alarm thresholds, adjust Modbus settings, configure relay behavior and manage analog output settings.) - Maintenance (Test LED/buzzer function, relays, and analog output level.) - Calibration (View sensor type, serial number and “Calibration Due” timer and initiate zero / span calibrations with customizable field calibration certificate.) - Intuitive Interface (View current gas measurement and acknowledge alarm / fault status.)
Screenshots
Verdict
SiteService and MGS 400 both sit at 4.9 stars, but that hides the real split: 100% of MGS 400's written reviews are positive against 30% of SiteService's. SiteService's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, rating, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for SiteService against 5.0 for MGS 400. That said, the two scores are not equally well evidenced: SiteService has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 30% of SiteService's written reviews are positive against 100% of MGS 400's.
SiteService ships an update every 32 months, MGS 400 every 17 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.
| Parameter | SiteService | MGS 400 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (7 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 30.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 7 — better | 1 |
| Update frequency | Every 32 months | Every 17 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 73 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Danfoss A/S | MSA - The Safety Company |
Customer experience
SiteService
MGS 400
In-app purchases
SiteService
No in-app purchases
MGS 400
No in-app purchases
Questions
Is SiteService free?
Is MGS 400 free?
Which has better reviews, SiteService or MGS 400?
Do SiteService or MGS 400 have ads?
Which is updated more often, SiteService or MGS 400?
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