What is a good, free Android flight chart app?

Any suggestions on one? There are a ton out there, but I’d like one that would be most useful in FS2020. Mainly for airport layouts, maps with VOR frequencies, etc.

I used to use FltPln Go but now I just use SkyVector through Chrome. That way I can open airport diagrams and approach plates in different tabs and have them all handy.

Try “AirMate”. I haven’t used it on Android, but I did use it on iOS and I see that there is an Android version. I switched to “iFlightPlanner” with XPlane mainly for some other features, but I believe AirMate had all of the charts, layouts, etc.