fpv0 has a track builder built in, so you are not stuck with our courses. Open any of the four maps, switch the builder on and fly to the spot where you want a gate. Press the button and the gate stays there in the air. When the track is done the simulator hands you a link. Your friend opens it and flies your course with the same lap timer. No account, nothing to download, and it works on a phone the same way it works on a computer.
Three steps, nothing to set up.
The button sits in the top row next to the track names. On a phone that row opens with the gear icon at the bottom of the screen.
In the builder the quad hovers when you let go of the sticks and it cannot hit anything. Fly to the spot, press GATE, and the gate stays there.
Done shows how many gates you ended up with. Send to a friend puts the link on the clipboard: drop it in a chat and it opens straight into the track.
This is not drone flying, it is free movement: up, down, forward, back, sideways and turn. You cannot crash in the builder.