Three speeds you can select at a corner
Entry: know your speed as you arrive.
Minimum: hear what you carry through the corner.
Exit: measure your run onto the straight.
How to set it up
- Choose from the built-in track library, use GPS to locate nearby tracks, or record a custom track by driving a lap.
- Select the corners you want to work on.
- Turn on the callouts you want at each one.
- Check your audio before going on track.
What you need
Your phone, a secure mount, and a way to hear the callouts: a compatible helmet speaker, earbud, or a Bluetooth connection to your car's stereo. You do not need to wire a data logger into the car. Read the phone-mounting guide
Free to start
The free version lets you enable one voice callout at a time, so you can try it at a corner you want to work on. An upgrade unlocks multiple speed callouts across the track. See the app for current upgrade pricing.