Well suited for drag racing.
You will need Internet access for the first run.
How to use:
- Tap the "Create timer" button on the first phone (enable bluetooth if required).
- Tap the "Join timer" button on the second phone, wait for the phone to discover the first phone, and tap on it's name.
- Wait for synchronization to complete.
- Tap the screen on your phone to set your status as 'ready'. The countdown timer will start when you both are ready.