# F vs CriterApp

The clearest difference is review sentiment: F at 88% against CriterApp's 0%. CriterApp's advantage is price (Free vs $2.99) and in-app purchases (none vs 4). On update cadence, ads, device support and iOS requirement there is nothing between them.

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

F ships an update every 4 weeks, CriterApp every 6 weeks. The most recent releases landed on November 2, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | F | CriterApp |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | **87.5% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 6 weeks |
| Monetization | Paid | **Free** |
| Size | 30 MB | 114 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Radu Dominte](https://appshunter.io/developer/1242111237) | [Regione Emilia-Romagna](https://appshunter.io/developer/512982992) |

## 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 |


### CriterApp

[App page](https://appshunter.io/ios/app/criterapp/id1515687432)

Access cadastral data for the Emilia-Romagna region. This mobile tool allows users to interface with the regional land registry, providing access to important property information.

**Highlights:** Cadastral data access, Emilia-Romagna region specific, Land registry interface, Property information retrieval

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is F free?

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

### Is CriterApp free?

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

### Do F or CriterApp have ads?

Neither F nor CriterApp shows ads.

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

F ships an update every 4 weeks, and CriterApp every 6 weeks. Most recently, F was updated on November 2, 2026 and CriterApp 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.*