This is a MSFS Mobile Companion App in-game panel built with the help of MSFS2020-WebView-Panel by sciontc1 and MSFS Panel Twitch Chat by jopeek.

Extract and copy to Community folder.
Run simultaneously with MSFS Mobile Companion App

Note on limitations
Initially I made this in-game panel for my own private use to be able to use MSFS Mobile Companion App to tune ADF frequencies (for my BR Goose Radio Nav mod when flying in VR but then decided to share it with the community in case others find it useful too despite its limitations.
While the in-game panel works in general, some buttons are non-functioning making the in-game panel version not as functional as the mobile or web-based version. To iron out these limitations is beyond my skills, so you have been warned :-)