# Gas Detection vs SHO

The clearest difference is review sentiment: Gas Detection at 100% against SHO's 0%. Gas Detection also leads on rating (5.0 vs 3.9) and iOS requirement (12.0 vs 14.2). SHO's advantage is update cadence (every 2 months vs every 16 months) and ratings volume (13 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Gas Detection holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: SHO has 13 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Gas Detection's written reviews are positive against 0% of SHO's.

Gas Detection ships an update every 16 months, SHO every 2 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Gas Detection | SHO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/gas-detection/id509211421/reviews)** | [3.9 (13 ratings)](https://appshunter.io/ios/app/sho-flow/id1447418345/reviews) |
| Number of ratings | 2 | **13** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 79 MB | 145 MB |
| Requires iOS | **12.0** | 14.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Draegerwerk AG & Co. KGaA](https://appshunter.io/developer/646307986) | [Task Force Tips](https://appshunter.io/developer/1447418344) |

## What reviewers say

### Gas Detection

[App page](https://appshunter.io/ios/app/gas-detection/id509211421)

Explore gas and vapor measurement technology with this app. It details Dräger-Tube, Dräger Sensor, and Dräger Chip systems, offering comprehensive listings of tubes and chips with measurement parameters. Learn about portable monitors and access support resources like compatibility charts and how-to videos.

**Highlights:** Gas and vapor measurement technology overview, Dräger-Tube, Sensor, and Chip system details, Complete listing of Dräger-Tubes and chips, Introduction to portable monitors, Sensor compatibility chart, How-to videos and error code charts

**Features:** macOS Compatibility

**In-app purchases:** none


### SHO

[App page](https://appshunter.io/ios/app/sho-flow/id1447418345)

This app assists firefighters in calculating water flow rates, pump discharge pressures, and nozzle reactions. It can be used with a Bluetooth flow meter or as a standalone calculator with established fire flow formulas. Educational videos on water flow are also included.

**Highlights:** Calculate fire hose flow rates, Determine pump discharge pressures, Calculate nozzle reaction, Perform NFPA 1962 nozzle flow tests, Standalone water flow calculator, Water flow education videos

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gas Detection free?

Gas Detection is free to download, with no in-app purchases.

### Is SHO free?

SHO is free to download, with no in-app purchases.

### Which has better reviews, Gas Detection or SHO?

Gas Detection is rated higher. Gas Detection averages 5.0 out of 5 from 2 ratings, while SHO averages 3.9 from 13 ratings.

### Do Gas Detection or SHO have ads?

Neither Gas Detection nor SHO shows ads.

### Which is updated more often, Gas Detection or SHO?

Gas Detection ships an update every 16 months, and SHO every 2 months. Most recently, Gas Detection was updated on October 21, 2026 and SHO on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*