MGS 400 vs Engineering Toolbox ET
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.)
Engineering Toolbox ET
This utility app provides quick access to essential electronic formulas and calculations. It helps users easily determine resistor color codes, capacitor codes, perform numeric base conversions, and calculate parallel resistors and LED resistors without needing to memorize complex equations.
- Resistor color code lookup
- Capacitor code lookup
- Numeric base conversion
- Parallel resistors calculation
- LED resistor calculation
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Engineering Toolbox is a lightweight app that you'll be able to use to apply basic electronic formulas, without the need to remember them! Such as: resistor color codes, capacitor codes, numeric base conversion, parallel resistors calculation, LED resistor calculation, and more.
Screenshots
Verdict
The clearest difference is price: MGS 400 at Free against Engineering Toolbox ET's $1.99. MGS 400 also leads on rating (5.0 vs 4.0). Engineering Toolbox ET's advantage is ads (none vs shown). On ratings volume, in-app purchases, device support and iOS requirement 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
MGS 400 is free to download; Engineering Toolbox ET costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MGS 400 holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
| Parameter | MGS 400 | Engineering Toolbox ET |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 5.0 (1 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 17 months | — |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 14.3 |
| Further details — not scored | ||
| Size | 16 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | MSA - The Safety Company | Ricardo Torres |
Customer experience
MGS 400
Engineering Toolbox ET
In-app purchases
MGS 400
No in-app purchases
Engineering Toolbox ET
No in-app purchases
Questions
Is MGS 400 free?
Is Engineering Toolbox ET free?
Which has better reviews, MGS 400 or Engineering Toolbox ET?
Do MGS 400 or Engineering Toolbox ET have ads?
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