# F vs Comodis

The clearest difference is price: Comodis at Free against F's $2.99. Comodis also leads on in-app purchases (none vs 4). F's advantage is update cadence (every 4 weeks vs every 15 months) and iOS requirement (12.0 vs 15.6). On ads and device support there is nothing between them.

Comodis is free to download; F costs $2.99 up front. F sells 4 one-off in-app purchases. Comodis asks for nothing beyond the download.

F ships an update every 4 weeks, Comodis every 15 months. The most recent releases landed on August 17, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | F | Comodis |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 15 months |
| Monetization | Paid | — |
| Size | 30 MB | 46 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Radu Dominte](https://appshunter.io/developer/1242111237) | [ASW France](https://appshunter.io/developer/1463042406) |

## What reviewers say

### F

[App page](https://appshunter.io/ios/app/f-gas-tool/id1242111238)

This tool calculates the Global Warming Potential (GWP) of greenhouse gases, aiding compliance with EU regulations. It helps track gas inventory, calculate leak detection frequency, and manage gas phase-out and retrofitting. The app also provides gas composition and flammability data.

**Highlights:** GWP calculation for greenhouse gases, Leak detection frequency calculation, Gas phase-out and retrofit management, Cloud-based Gas Manager for inventory tracking, Gas composition and flammability data, Supports multiple languages

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ads Removal | $0.99 | one-time |
| +30 Gas Insertions | $0.99 | one-time |
| +60 Gas Insertions | $1.99 | one-time |
| +120 Gas Insertions | $3.99 | one-time |


### Comodis

[App page](https://appshunter.io/ios/app/comodis/id1636478735)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is F free?

F costs $2.99, and also offers in-app purchases.

### Is Comodis free?

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

### Do F or Comodis have ads?

Neither F nor Comodis shows ads.

### Which is updated more often, F or Comodis?

F ships an update every 4 weeks, and Comodis every 15 months. Most recently, F was updated on August 17, 2026 and Comodis on September 20, 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.*