Run
Louder.
Family & friends record 30-second audio messages called Chirps. CHIRPSTR plays them through your headphones during your next run or activity.
Three steps to
your best run
Download the app
Create your profile in about a minute. Free, no card.
Share your link
Friends and family record from any browser. No app, no account.
Run supported
Chirps duck your music and play at your interval or mile marker.
Take a look around
Long enough to matter, short enough to keep moving.
AirPods, Bluetooth, wired. Whatever your phone supports.
Chirps duck the audio, then hand it straight back.
Your chirps are yours. Never shared or sold.
Under a dollar
a month
Share CHIRPSTR with a friend. When they sign up, every Pro feature unlocks for a week.
Everything you need to get started.
Everything you need to finish strong.
No. You share one link and they record straight from a mobile browser. No app, no account, so even grandparents can get in on it.
Training mode lets you set the interval. Race Mode uses GPS to fire mile-specific chirps. Kick Mode plays one every five seconds when you need to grind through a bad patch.
CHIRPSTR ducks your audio, plays the message clearly, then hands your music straight back.
Up to 30 seconds. Long enough to say something meaningful, short enough that you never break stride.
No. 5K, half, long training run, tough workout, or a walk. If someone wants to cheer you on, CHIRPSTR gets their voice in your ears.
Chirps are stored securely and only you can hear them. We never share or sell them. Free chirps are kept 30 days, Pro keeps them a year and lets you download them.
Yes. CHIRPSTR is available on both the App Store and Google Play, and your account works across both.
Your first chirp is one link away.
CHIRPSTR is live on the App Store right now. Download it and record your first chirp today.