# PortaGas vs Grid Manager

The clearest difference is rating: Grid Manager at 5.0 against PortaGas's 3.3. Grid Manager also leads on update cadence (every 4 weeks vs every 22 months). PortaGas's advantage is ratings volume (4 vs 1) and device support (3 vs 1). 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.

Grid Manager holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

PortaGas ships an update every 22 months, Grid Manager every 4 weeks. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | PortaGas | Grid Manager |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (4 ratings)](https://appshunter.io/ios/app/portagas/id1164234357/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/grid-manager/id6756004515/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 4 weeks** |
| Monetization | Free | Free |
| Size | 110 MB | 74 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Linde GmbH](https://appshunter.io/developer/657403417) | [MSA - The Safety Company](https://appshunter.io/developer/482957840) |

## 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


### Grid Manager

[App page](https://appshunter.io/ios/app/grid-manager/id6756004515)

Configure and manage your MSA io ALTAIR ecosystem. Assign worker and ID tags, connect up to 20 devices, and apply dock settings directly from your mobile device.

**Highlights:** Manage worker & MSA ID tags, Configure ALTAIR io 4 & io 6 devices, Configure ALTAIR io DOCK settings, Register ALTAIR io Devices, Connect up to 20 devices

**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 Grid Manager free?

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

### Which has better reviews, PortaGas or Grid Manager?

Grid Manager is rated higher. PortaGas averages 3.3 out of 5 from 4 ratings, while Grid Manager averages 5.0 from 1 ratings.

### Do PortaGas or Grid Manager have ads?

Neither PortaGas nor Grid Manager shows ads.

### Which is updated more often, PortaGas or Grid Manager?

PortaGas ships an update every 22 months, and Grid Manager every 4 weeks. Most recently, PortaGas was updated on October 15, 2026 and Grid Manager 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.*