"That felt like a bad trade - paying for something that watches you, with your data leaving your device."
That frustration is what drove Bnaya Mescheloff to build PosturePerfect. After years of watching his posture deteriorate during long work-from-home days, he started looking at existing solutions and found them all wanting in the same way - they were intrusive, cloud-based, or required handing a camera feed over to a subscription service. The core problem wasn't posture. It was privacy.
PosturePerfect is built for knowledge workers - developers, designers, students, anyone spending six or more hours a day at a screen. People who know they slouch and want a nudge, but don't want to feel constantly interrupted or surveilled. The solution Bnaya landed on was to eliminate the trade-off entirely: all processing happens locally using Google's MediaPipe, so the camera feed never leaves your machine. No cloud, no server, no storage of any kind.
A Quiet Coach, Not a Surveillance Tool
The design philosophy carries through into how the app actually works. Rather than judging posture against a generic standard, PosturePerfect calibrates to your body through a setup step, so the detection reflects your baseline rather than someone else's. On the Pro tier, it goes further - automatically pausing during video calls so you're not getting nudged mid-meeting, adapting its detection rate to preserve laptop battery, and learning your fatigue patterns to intervene before your posture actually breaks down.
The goal Bnaya kept coming back to was the feeling of a quiet coach rather than a monitoring tool. Something that helps without demanding your attention or your data in return.
PosturePerfect is available now on ProductHunt and runs entirely on your own hardware.
