Whistle Timer - Interval Training Timer

Sports interval timer with an automatic built-in whistle

The Sports Timer with a Built-In Whistle

Whistle Timer lets you create customized training schedules with automatic whistle blows. Set work intervals, rest periods, and let the app blow the whistle for you. Perfect for sports coaches, PE teachers, and fitness instructors.

Training Timer Features

Custom Schedules

Work intervals — Set activity duration
Rest periods — Add customized breaks between sets
Repeat rounds — Loop your schedule automatically
Whistle blow — Automatic whistle at each interval change

Sports Whistle

Loud whistle sound — Clear, audible signal
Continuous blow — Hold for extended whistle
Automatic triggers — Whistle blows at interval transitions
No physical whistle needed — Your phone does the work

Whistle Timer showing a custom work and rest interval training schedule

Countdown timer running an interval with an automatic whistle blow

Sports whistle button for coaches and PE teachers to blow on demand

Repeating rounds setup for HIIT, boxing, and circuit training workouts

Perfect For

Sport / Activity	Use Case
Football practice	Time drills and scrimmages
Basketball training	Interval conditioning
Swimming	Set timing and rest periods
PE classes	Manage activity rotations
HIIT workouts	Work/rest interval training
Boxing	Round timing with rest bells
CrossFit	WOD and AMRAP timing
Circuit training	Station rotation timing

What Users Are Saying

“Perfect for PE classes. The whistle is loud enough for the gym.”

“Use it for every football practice. So much easier than a physical whistle.”

Rated 4.4/5 stars — The coach’s favorite timer

Download

Download Whistle Timer and streamline your training sessions.