UEi DTHA2 vs MRLDS 400
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
UEi DTHA2
This app connects to a wireless adapter to measure airflow velocity, volumetric flow, temperature, and relative humidity. It allows adjustments for ducting and offers averaging options for readings.
- Measure airflow velocity
- Measure volumetric flow
- Measure temperature
- Measure relative humidity
- Adjust for ducting
- Time or point averaging
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The companion app for UEi's DTHA2 wireless adapter. Enable Bluetooth on your mobile device, launch the app, connect DTHA2 and measure: a) Airflow velocity (ft/min, mph, m/s, or km/h) b) Volumetric flow (CFM, m^3/h, or L/s) c) Temperature (F or C) d) Relative Humidity The app allows you to adjust for Round or Rectangular Ducting (in or cm) as well as take Averages over Time or Average via Point readings.
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.)
Screenshots
Verdict
The clearest difference is iOS requirement: UEi DTHA2 at 12.0 against MRLDS 400's 14.0. On price, update cadence, ads 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.
UEi DTHA2 ships an update every 7 months, MRLDS 400 every 5 months. The most recent releases landed on October 24, 2026 and September 28, 2026 respectively.
| Parameter | UEi DTHA2 | MRLDS 400 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 7 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 17 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Kane Asia Inc. | Copeland LP |
In-app purchases
UEi DTHA2
No in-app purchases
MRLDS 400
No in-app purchases
Questions
Is UEi DTHA2 free?
Is MRLDS 400 free?
Do UEi DTHA2 or MRLDS 400 have ads?
Which is updated more often, UEi DTHA2 or MRLDS 400?
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