# GasSCAN vs Vaetrix Hydro App

The clearest difference is review sentiment: GasSCAN at 100% against Vaetrix Hydro App's 0%. GasSCAN also leads on rating (4.9 vs 4.0) and ratings volume (8 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

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

GasSCAN holds the better App Store score, 4.9 against 4.0. Both are backed by a comparable volume of ratings — 8 and 2 respectively. Written reviews point the same way: 100% of GasSCAN's written reviews are positive against 0% of Vaetrix Hydro App's.

GasSCAN ships an update every 4 months, Vaetrix Hydro App every 6 months. The most recent releases landed on September 20, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | GasSCAN | Vaetrix Hydro App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (8 ratings)](https://appshunter.io/ios/app/gasscan/id1361183535/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/vaetrix-hydro-app/id1593529241/reviews) |
| Number of ratings | **8** | 2 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | Free | Free |
| Size | 517 MB | 7 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Magnolia River](https://appshunter.io/developer/691329552) | [JM Test Systems Inc.](https://appshunter.io/developer/1477078443) |

## What reviewers say

### GasSCAN

[App page](https://appshunter.io/ios/app/gasscan/id1361183535)

Scan barcodes or QR codes that comply with ASTM F2897 standards. The app records scan data along with GPS location, allowing for easy export of scan lists in CSV format for GIS integration.

**Highlights:** ASTM F2897 barcode scanning, QR code scanning, GPS data logging, Scan history storage, CSV export, ArcGIS Online integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Vaetrix Hydro App

[App page](https://appshunter.io/ios/app/vaetrix-hydro-app/id1593529241)

Monitor pipeline pressure in real-time with live readings, min/max values, and customizable alarms. View trending graphs and store permanent data records. Easily share reports in PDF format for efficient field distribution and compliance.

**Highlights:** Live pressure monitoring, Min/Max pressure tracking, Customizable pressure alarms, Live trending graph, Data storage and PDF export, Field data distribution

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is GasSCAN free?

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

### Is Vaetrix Hydro App free?

Vaetrix Hydro App is free to download, with no in-app purchases.

### Which has better reviews, GasSCAN or Vaetrix Hydro App?

GasSCAN is rated higher. GasSCAN averages 4.9 out of 5 from 8 ratings, while Vaetrix Hydro App averages 4.0 from 2 ratings.

### Do GasSCAN or Vaetrix Hydro App have ads?

Neither GasSCAN nor Vaetrix Hydro App shows ads.

### Which is updated more often, GasSCAN or Vaetrix Hydro App?

GasSCAN ships an update every 4 months, and Vaetrix Hydro App every 6 months. Most recently, GasSCAN was updated on September 20, 2026 and Vaetrix Hydro App on September 8, 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.*