Cairn watches your webcam with on-device MediaPipe AI and keeps you aligned all day — posture, eyes, a pose-tracked stretch coach, and a moment of calm when you need it.
Founding price $14 $25 · pre-order on Polar · before public launch
The MediaPipe models that power on-device AI turn your webcam into a wellness sensor — every frame analyzed locally, nothing recorded, nothing uploaded.
Tracks your blink rate and nudges you before dry, tired eyes set in — with a gentle 20-20-20 timer.
Estimates how close you're leaning in and reminds you to sit back before you hunch toward the display.
Learns your neutral seated position and catches the slow slump before your back does.
Every reminder app tells you to move. Cairn stands you up, guides you through a real routine, and uses live pose tracking to check you're actually doing it — then scores your range of motion.
A native notification when you've been sitting too long. Not ready? Snooze 10 or 30 minutes.
Overhead reach, side bends, chest opener — each demonstrated with a clear on-screen cue.
MediaPipe pose tracking confirms you're holding the stretch and measures how deep you go.
Hold quality and range of motion become a session score that feeds your daily Wellness Score and streak.
When your shoulders are up by your ears, Desk Meditation runs a five-minute guided breathing session with a warm ambient soundscape generated right on your Mac — no files, no headphones, no internet. Follow the orb, lengthen the exhale, and drop back into focus.
Cairn will be free to download and keep the real-time nudges forever. Reserve Pro now through Polar at the founding price — pay once, and every future update is yours for good.
Everything you need to sit better today.
Coach your body, and prove your progress.
Secure checkout by Polar · pay once
Cairn runs the MediaPipe models on your Mac. Your camera frames are analyzed in memory and immediately discarded — never written to disk, never sent to a server, never seen by us. There's no account to create because there's no data to collect.