Plug in over USB or pair it, and move a stick. If a stick does the wrong thing: Settings → Controller → Calibrate sticks.
Keyboard
WS throttle · AD yaw · arrows pitch / roll · Space cut
Anytime
R restart · T rewind 3 s · Esc settings
On a phone
Turn it sideways and fly with your thumbs: left stick is throttle and yaw, right stick is pitch and roll. Settings and Restart are at the top of the screen. For no address bar at all, add this page to your home screen.
Rates type: Actual (Betaflight). Preloaded with your Racing profile; edits apply straight away. Move your sticks to see where you are on each curve.
Axis
Centre sensitivity
Max rate
Expo
Max vel
Stick now
Works with any radio in USB joystick mode (EdgeTX, OpenTX, DJI, TBS) or a gamepad.