SitTall - Fix Your Posture

Hi everyone, I'm Nebi, the solo dev behind SitTall.

I sit at a desk most of the day, and by the evening I'd realize how much my back hurt after being hunched over for hours without noticing. I wanted something that would quietly keep an eye on my posture. No camera watching, no account to create, no subscription to manage.

While poking around, I learned that the AirPods Pro in my ears have a 6-axis motion sensor running 60 times a second. Apple uses these sensors for spatial audio. Since they're so good at detecting head position, I figured they could help detect body slouching too. The first sign is usually a neck tilt, which SitTall monitors in real time.

After a lot of trial and error, SitTall was born. It lives in your Mac menu bar, calibrates in two taps (sit up straight, slouch, done), and nudges you when bad posture persists. Not every time you glance down.

Everything runs locally on your Mac. No camera, no account, no cloud. Nothing leaves your device, ever.

It's $6 on the Mac App Store. One-time payment, yours forever. It requires macOS 14+ and AirPods Pro 2 or AirPods 4 ANC (the models with the motion sensors).

I'd genuinely love your feedback, especially anything that feels broken or unclear. I'm in the comments all day.