# Skylegs EFB vs UAS GTMx

The clearest difference is update cadence: UAS GTMx at weekly against Skylegs EFB's every 2 months. UAS GTMx also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Skylegs EFB ships an update every 2 months, UAS GTMx weekly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Skylegs EFB | UAS GTMx |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 123 MB | 159 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [Skylegs](https://appshunter.io/developer/670933276) | [UAS International Trip Support](https://appshunter.io/developer/1232192290) |

## What reviewers say

### Skylegs EFB

[App page](https://appshunter.io/ios/app/skylegs-efb/id1000549119)

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

**In-app purchases:** none


### UAS GTMx

[App page](https://appshunter.io/ios/app/uas-gtmx/id1617089034)

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

**In-app purchases:** none


## Frequently asked questions

### Is Skylegs EFB free?

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

### Is UAS GTMx free?

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

### Do Skylegs EFB or UAS GTMx have ads?

Neither Skylegs EFB nor UAS GTMx shows ads.

### Which is updated more often, Skylegs EFB or UAS GTMx?

Skylegs EFB ships an update every 2 months, and UAS GTMx weekly. Most recently, Skylegs EFB was updated on November 1, 2026 and UAS GTMx on November 3, 2026.

---

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