# F vs Knil

The clearest difference is iOS requirement: Knil at 9.0 against F's 15.0. 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 3 months, Knil every 4 months. The most recent releases landed on September 9, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | F | Knil |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (10 ratings)](https://appshunter.io/ios/app/knil-universal-links-testing/id1195310358/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | — | Free |
| Size | 2 MB | 14 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yo-So Technologies Limited](https://appshunter.io/developer/820177061) | [Elaborapp](https://appshunter.io/developer/899446598) |

## What reviewers say

### F

[App page](https://appshunter.io/ios/app/f-redemption/id1007902618)

**Features:** macOS Compatibility

**In-app purchases:** none


### Knil

[App page](https://appshunter.io/ios/app/knil-universal-links-testing/id1195310358)

This developer tool helps test Universal Links for iOS applications. It fetches and parses AASA files, lists all Universal Links, and allows for one-tap testing. It also provides links to other validation tools.

**Highlights:** Fetch and parse AASA file, List and test Universal Links, Customizable test links, Links to validation tools, Open source iOS project

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is F free?

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

### Is Knil free?

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

### Do F or Knil have ads?

Neither F nor Knil shows ads.

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

F ships an update every 3 months, and Knil every 4 months. Most recently, F was updated on September 9, 2026 and Knil on September 15, 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.*