MRLDS 400 vs RED control
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MRLDS 400
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The Copeland MRLDS 400 App allows users to configure, maintain and interface with compatible MRLDS-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.)
RED control
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RED control is an application designed for refrigeration technicians, allowing for remote monitoring of food service and scientific refrigeration units. The strenghts of the app are - smart view of the installed plants and their status - push notification when alarms occur - simplified unit registration via QR code
Screenshots
Verdict
MRLDS 400 and RED control are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
MRLDS 400 ships an update every 5 months, RED control every 4 months. The most recent releases landed on September 25, 2026 and September 21, 2026 respectively.
| Parameter | MRLDS 400 | RED control |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Copeland LP | CAREL INDUSTRIES S.p.A. |
In-app purchases
MRLDS 400
No in-app purchases
RED control
No in-app purchases
Questions
Is MRLDS 400 free?
Is RED control free?
Do MRLDS 400 or RED control have ads?
Which is updated more often, MRLDS 400 or RED control?
Other comparisons
