Linear Interpolation Master vs MRLDS 400
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Linear Interpolation Master
This tool simplifies linear interpolation calculations for industrial commissioning engineers. It features large, easily readable numbers for field use and allows for quick swapping of coordinate systems, such as converting between 4-20mA and 0-100% scales.
- Large number display for field visibility
- Quickly swap X and Y coordinates
- 4-20mA to 0-100% conversion
- 0-100% to 4-20mA conversion
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A linear interpolation calculator designed for industrial commissioning engineers. It has the following features: - Displays large numbers for when you are out in the field commissioning. - Allows quickly swapping x and y coordinates; for example from 4-20mA -> 0-100% to 0-100% -> 4-20mA.
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 in-app purchases: MRLDS 400 at none against Linear Interpolation Master's 3. MRLDS 400 also leads on ads (none vs shown). Linear Interpolation Master's advantage is iOS requirement (11.0 vs 14.0). On price, update cadence 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. Linear Interpolation Master sells 3 one-off in-app purchases. MRLDS 400 asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on October 18, 2026 and September 28, 2026 respectively.
| Parameter | Linear Interpolation Master | MRLDS 400 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (176 ratings) — better | — |
| Positive reviews | 62.5% of reviews | — |
| Number of ratings | 176 — better | — |
| Update frequency | Every 5 months | Every 5 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 16 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | VERVE TECHNOLOGIES PTY. LTD. | Copeland LP |
In-app purchases
Linear Interpolation Master
- Generous Tip$2.99
- Massive Tip$3.99
- Amazing Tip$4.99
MRLDS 400
No in-app purchases
Questions
Is Linear Interpolation Master free?
Is MRLDS 400 free?
Do Linear Interpolation Master or MRLDS 400 have ads?
Which is updated more often, Linear Interpolation Master or MRLDS 400?
Other comparisons
