# Fortress SOS vs Pneumatic Workflow

The clearest difference is ads: Fortress SOS at none against Pneumatic Workflow's shown. Fortress SOS also leads on update cadence (every 2 months vs every 18 months) and device support (4 vs 2). On price 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.

Fortress SOS ships an update every 2 months, Pneumatic Workflow every 18 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Fortress SOS | Pneumatic Workflow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 18 months |
| Size | 12 MB | 31 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ruben Carbajal](https://appshunter.io/developer/1464774605) | [Pneumatic Software Inc.](https://appshunter.io/developer/1618358218) |

## What reviewers say

### Fortress SOS

[App page](https://appshunter.io/ios/app/fortress-sos/id1482442448)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Pneumatic Workflow

[App page](https://appshunter.io/ios/app/pneumatic-workflow/id1618369634)

**In-app purchases:** none


## Frequently asked questions

### Is Fortress SOS free?

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

### Is Pneumatic Workflow free?

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

### Do Fortress SOS or Pneumatic Workflow have ads?

Pneumatic Workflow shows ads; Fortress SOS does not.

### Which is updated more often, Fortress SOS or Pneumatic Workflow?

Fortress SOS ships an update every 2 months, and Pneumatic Workflow every 18 months. Most recently, Fortress SOS was updated on October 26, 2026 and Pneumatic Workflow on October 25, 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.*