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spina
Fix your posture while you work. Privately, on-device.
A small mac app that watches your camera locally and nudges you when it's time to sit up. No cloud, no subscription, no account. One-time purchase.
Hey Product Hunt 👋
I'm a solo dev who spent the last year hunched over Claude Code shipping side projects. My back finally said enough. I tried every "sit up straight" reminder app — they're all either annoying timers that have nothing to do with how I'm actually sitting, or web apps that want my camera feed in a browser tab forever.
So I built Spina.
It lives in your menu bar, watches your posture through the webcam at 2 FPS, and nudges you when you slouch. Everything runs on-device via MediaPipe — no video is recorded, no frames leave your Mac, no account needed.
A few things I'm proud of:
- Mirror Mode — see yourself with posture overlay when you want feedback
- Calibration to your specific desk setup, not some generic ideal
- Weighted scoring across 4 metrics with hysteresis, so it doesn't false-positive every time you turn your head
It's a one-time purchase (no subscription nonsense for a menu bar app).
Would love feedback from anyone who codes/designs all day. What would make this a daily-use tool for you? AMA below.
About spina on Product Hunt
“Fix your posture while you work. Privately, on-device.”
spina was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #143 on the daily leaderboard. A small mac app that watches your camera locally and nudges you when it's time to sit up. No cloud, no subscription, no account. One-time purchase.
On the analytics side, spina competes within Mac, Health & Fitness and Productivity — topics that collectively have 840.1k followers on Product Hunt. The dashboard above tracks how spina performed against the three products that launched closest to it on the same day.
Who hunted spina?
spina was hunted by Tokmyrza Kakenov. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of spina including community comment highlights and product details, visit the product overview.
Tokmyrza Kakenov