A posture app for Mac that shows what your neck is carrying.

Yes. Real-time posture monitoring is free all day, with no daily limit. Pelion Pro adds advanced history, Guard, Recovery and agent actions — it does not unlock more monitoring time.

No. There is no per-day cap and no trial window. You can leave Pelion watching for your whole working day without paying anything.

No. Monitoring never needs an account. Your baseline, statistics and settings all live on your Mac. An account only exists for things that cannot stay local, such as being told when Pro opens.

Pro adds full history, trends & patterns, multi-desk calibration, mcp write tools for agents, system notifications (l3), and more. It is a Guard and Recovery layer on top of monitoring, not extra monitoring time.

There is no price, because Pro is not open yet. Rather than showing a placeholder figure, the app says "not open yet" — there is nothing to buy and nothing to restore today.

No. Frames are analysed on your Mac and discarded immediately. No video is recorded, stored or uploaded, and there is no footage on disk to sync or leak.

Aggregates only: your calibrated baseline, daily statistics and five-minute buckets of load — numbers and timestamps, never images. You can export all of it, or delete it, from the app's privacy settings.

No. It is an estimate of how much more your neck carries compared with your own calibrated upright baseline, interpolated from Hansraj (2014). It is not a clinical measurement and Pelion does not diagnose anything.

You sit the way you actually want to sit and hold it for ten seconds. That becomes your upright baseline, and every number afterwards is relative to you rather than to a textbook spine. You can recalibrate at any time.

macOS 14 (Sonoma) or later and a webcam — the built-in one is fine. No extra hardware, no wearable, no subscription.

Pelion bundles a local Model Context Protocol server so AI clients such as Claude Code and Cursor can read your posture context. It speaks stdio only, opens no listening port, makes no network requests of its own, and is off by default until you turn it on.

It can read: 7 resources and 5 free tools, of which 3 return data directly and 2 file a tuning request that you approve inside the app. The 5 behaviour tools — pausing monitoring, sending a nudge, starting a focus or relief session — ship with Pro and are not open, so the server declines them.

No. The demo asks for the camera only after you click, runs the same model locally in your browser, and sends no frames, features or numbers anywhere. Nothing from the demo enters analytics.