Apple iPhone / iPad

Current version: 8.0
Download in Apple App Store

Android Phone / Tablet

android market

Current version: 8.2
Download in Google Play Store

Windows 10

Universal Windows Platform (UWP) app
Current version: 2.5
Download in Windows Store

Desktop app, run as a Windows service
Current version: 2.2
Download here

What is the difference between the UWP store app and the desktop app?