# F vs KlySense

The clearest difference is device support: F at 3 against KlySense's 1. F also leads on iOS requirement (13.4 vs 16.4). On price, update cadence, ads 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.

F ships an update every 2 months, KlySense every 3 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | F | KlySense |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | — |
| Size | 19 MB | 44 MB |
| Requires iOS | **13.4** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Gestimat – Groupe Dehon](https://appshunter.io/developer/928450680) | [GLOBAL SYSTEM INTEGRATION srl](https://appshunter.io/developer/1805159234) |

## What reviewers say

### F

[App page](https://appshunter.io/ios/app/f-gas-solutions/id928450681)

This app helps professionals understand and comply with European F-Gas regulations. It provides tools for calculating refrigerant loads, determining leak detection frequencies, and identifying suitable process fluids for various equipment.

**Highlights:** F-Gas III regulation compliance, Refrigerant load calculation, Leak detection frequency guide, Process fluid and solution recommendations, Equipment and application specific guidance

**Features:** macOS Compatibility

**In-app purchases:** none


### KlySense

[App page](https://appshunter.io/ios/app/klysense/id6749526335)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is F free?

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

### Is KlySense free?

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

### Do F or KlySense have ads?

Neither F nor KlySense shows ads.

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

F ships an update every 2 months, and KlySense every 3 months. Most recently, F was updated on October 24, 2026 and KlySense on October 24, 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.*