Handsfree Stopwatch

Developed for practicing as a drone racer, I need an easy app I could use by simply calling out commands and it delivering me timing data. We race drones using first person view and using a gaming style controller so our vision is blocked and our hands are not available. Using this stopwatch, I can tell it to start when I begin my first lap, then ever time I say LAP it audibly reads me the time since the last lap.

This could be useful to anyone who needs accurate timing data easy and on demand! Tell us about your use cases in the comments!