Sure, there are interval timer apps for your phone, Apple Watch and WearOS watch, and Fitbit's exercise app has an interval timer. But frankly, fitness trackers don't excel at tracking many ...

Nanosecond interval timers are a critical component in products as diverse as time-domain reflectometers ... Resistors R4, R5, R6, R7, and R8 damp transients that would degrade linearity.

Bit Timer isn’t as robust as Runkeeper, and that’s entirely its marketing approach. Bit Timer promises to be the “World’s Simplest Interval Timer Ever.” It is.