Looking for a 3D capable digital map tool

[Spiritchaser]

Hello all

In an upcoming campaign, I’m going to emphasize flight and 3 dimensional movement, with a few opportunities for set pieces in some hopefully interesting locations (in so much as I ever really KNOW who what or where the PC’s will end up fighting)

Campaign world? Check
Interesting reasons to fly? Check
Variant flight rules that balance reasonable simplicity with more options? Well we’ll see how they work but hopefully check

Way to track where everything is in 3 space?

Er... no. No not really


Any suggestions for such a tool?

PC preferred, though IOS would work too

Edit: I don’t mind a modest cost if it works well