# PortaGas vs Midrex Events

The clearest difference is update cadence: Midrex Events at every 3 months against PortaGas's every 22 months. PortaGas's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

PortaGas ships an update every 22 months, Midrex Events every 3 months. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | PortaGas | Midrex Events |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (4 ratings)](https://appshunter.io/ios/app/portagas/id1164234357/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 110 MB | 77 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Linde GmbH](https://appshunter.io/developer/657403417) | [Midrex Technologies, Inc.](https://appshunter.io/developer/6781434096) |

## What reviewers say

### PortaGas

[App page](https://appshunter.io/ios/app/portagas/id1164234357)

Access calibration gas certificates and safety data sheets instantly. Manage cylinder information, track expiration dates, and set reminders to maintain process quality. Streamline cylinder reordering and learn about sustainable programs.

**Highlights:** Real-time COA and SDS access, Cylinder information scanning and storage, Expiration date alerts, Cylinder reorder list creation, Sustainability program information

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

**In-app purchases:** none


### Midrex Events

[App page](https://appshunter.io/ios/app/midrex-events/id6781434094)

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

**In-app purchases:** none


## Frequently asked questions

### Is PortaGas free?

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

### Is Midrex Events free?

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

### Do PortaGas or Midrex Events have ads?

Neither PortaGas nor Midrex Events shows ads.

### Which is updated more often, PortaGas or Midrex Events?

PortaGas ships an update every 22 months, and Midrex Events every 3 months. Most recently, PortaGas was updated on October 24, 2026 and Midrex Events on October 14, 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.*