# F vs SmartTAC

The clearest difference is price: SmartTAC at Free against F's $2.99. SmartTAC also leads on in-app purchases (none vs 4) and iOS requirement (10.0 vs 12.0). On ads and device support there is nothing between them.

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

## The numbers

| Metric | F | SmartTAC |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | — |
| Monetization | Paid | — |
| Size | 30 MB | 28 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Radu Dominte](https://appshunter.io/developer/1242111237) | [Hermann Zerver GmbH & Co.KG](https://appshunter.io/developer/1440027303) |

## 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 |


### SmartTAC

[App page](https://appshunter.io/ios/app/smarttac/id1440027304)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is F free?

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

### Is SmartTAC free?

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

### Do F or SmartTAC have ads?

Neither F nor SmartTAC shows ads.

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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.*