# F vs Skyden

The clearest difference is in-app purchases: F at none against Skyden's 11. Skyden's advantage is update cadence (every 2 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Skyden sells 7 in-app purchases, starting at $9.99 per month. F asks for nothing beyond the download.

F ships an update every 3 months, Skyden every 2 days. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | F | Skyden |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 90.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | — | Freemium |
| Size | 1 MB | 132 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [FLY & RESCUE](https://appshunter.io/developer/1681997822) | [Guillaume Huchet](https://appshunter.io/developer/1773347643) |

## What reviewers say

### F

[App page](https://appshunter.io/ios/app/f-gdgu-performance/id6448870788)

**Features:** macOS Compatibility

**In-app purchases:** none


### Skyden

[App page](https://appshunter.io/ios/app/skyden-pilot-logbook/id6745750700)

This app is a modern pilot logbook designed for professionals. It allows for quick flight logging, secure cloud synchronization, and generation of compliant exportable logbooks. Track certificates and licenses with automatic reminders, and import data from other logbook services.

**Highlights:** Offline flight logging, Secure cloud sync, Exportable PDF logbooks, Certificate and license tracking, Import from other logbooks, Interactive world map of visited airports, Crew management and digital signatures

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Skyden Pro | $9.99 | per month |
| Skyden Pro | $49.99 | per year |
| Skyden Pro | $59.99 | per year |
| Skyden Pro | $79.99 | per year |
| Skyden Pro | $79.99 | per year |
| Skyden Pro | $79.99 | per year |
| Skyden Plus Lifetime | $179.99 | one-time |


## Frequently asked questions

### Is F free?

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

### Is Skyden free?

Skyden is free to download, with in-app purchases available.

### Do F or Skyden have ads?

Neither F nor Skyden shows ads.

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

F ships an update every 3 months, and Skyden every 2 days. Most recently, F was updated on October 18, 2026 and Skyden on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*