Comparison

H2K foam calculator vs Dräger X

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

H2K foam calculator

Features
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H2K is specialized in providing education, training courses, consultancy and 24/7 emergency response support. Customers are e.g. governmental agencies and industrial fire brigades. H2K focusses on industrial risks such as petroleum industry, pharmaceutical, chemical storage, transport and food processing industries. H2K is a JOIFF member. H2K strongly believes in a networking approach. Our aim is to share knowledge and expertise in industrial firefighting. By doing this H2K can support the network with recent insights and latest developments. This mobile application supports emergency responders making their calculations. The tool contains e.g. a burn down estimator, flow and required amounts of water and foam concentrate. The results can be saved on your device and send directly to other people within your network. The app connects users directly to H2K 24/7 emergency response support.

About

Dräger X

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The Dräger X-node is a wireless gas detector that can be connected to a LoRa network. Using this app, the following functions can be configured or executed on the X-node: - Display of the current gas value - Display of the current temperature, relative humidity and air pressure - Configuration of alarm limits, flashing patterns, flashing intervals - Viewing sensor and device information - Viewing and configuration of LoRa settings - Firmware update - Zero and sensitivity adjustment - Logger: recording and display of measured values for the last 7 days To use the Dräger X-node app, a Bluetooth connection must first be established with a Dräger X-node device. The current measured values for the concentration of the measured gas, the relative humidity, the temperature and the air pressure are displayed in an overview. Alarm limits can be set in the app. In addition, the user can set at which gas concentration the status LED lights up green, yellow or red. Furthermore, the blinking pattern as well as the time interval in which limit violations are visualized by the status LED can be set. The app displays the date of the last adjustment. The app can be used to adjust the sensor in the X-node. The app can also be used to update the firmware. Not only can information about the LoRa connection be displayed via the app, but the parameters for a LoRa connection can also be configured. Overall, the X-node app is a tool for checking and adjusting the function of the X-node device and integrating it optimally into the IoT landscape.

Screenshots

H2K foam calculator4 screens
Dräger X4 screens

Verdict

The call

The clearest difference is update cadence: Dräger X at every 2 months against H2K foam calculator's every 12 months. H2K foam calculator's advantage is iOS requirement (14.0 vs 26.0). On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

H2K foam calculator ships an update every 12 months, Dräger X every 2 months. The most recent releases landed on September 19, 2026 and September 13, 2026 respectively.

Scorecard2 real differences · 4 level
H2K foam calculator versus Dräger X: the parameters behind the verdict, then further details
ParameterH2K foam calculatorDräger X
PriceFreeFree
Update frequencyEvery 12 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.0 — better26.0
Further details — not scored
Size46 MB65 MB
Age rating12+4+
DeveloperVasio B.V.Draegerwerk AG & Co. KGaA

In-app purchases

None

H2K foam calculator

No in-app purchases

None

Dräger X

No in-app purchases

Questions

Is H2K foam calculator free?
H2K foam calculator is free to download, with no in-app purchases.
Is Dräger X free?
Dräger X is free to download, with no in-app purchases.
Do H2K foam calculator or Dräger X have ads?
Neither H2K foam calculator nor Dräger X shows ads.
Which is updated more often, H2K foam calculator or Dräger X?
H2K foam calculator ships an update every 12 months, and Dräger X every 2 months. Most recently, H2K foam calculator was updated on September 19, 2026 and Dräger X on September 13, 2026.

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