Privacy
Your posture is your business.
No one ever sees you. Each frame is scored on your computer and instantly discarded — there’s no server to send it to. Below is every network call, cookie, and byte, in plain English.
Exactly what happens
Nothing hidden, nothing collected.
In the desktop app
- No network calls during tracking. Pose detection runs in WebAssembly on your computer; AirPods motion comes from Apple’s CoreMotion via a native Rust bridge.
- One cold-launch CDN call downloads MediaPipe’s pose model from Google’s storage. After that, fully offline-capable.
- One online check per week validates your license — and tolerates 14 days of offline use.
- Local SQLite only. Per-second scores and daily summaries live on your machine. Export or clear anytime in Settings.
On this website
- Plausible for cookieless, aggregate analytics — no personal profiles.
- Two first-party cookies: sf_pv (pricing variant) and sf_hv (hero variant), strictly for A/B tests. Neither is used for advertising.
- Stripe handles payment; their privacy policy applies to checkout pages.
- No third-party trackers, ads, or pixels. Do-Not-Track is honored.
Provable, not promised
Pull the Wi-Fi. It still works.
There was never a server to send your frames to — so going fully offline changes nothing. That’s privacy you can verify, not just read.
Questions
Privacy FAQ.
Does Sitful send my video?
No. Camera frames are processed in WebAssembly on your computer and discarded within milliseconds. Nothing crosses the network.
What about pose landmarks?
Landmarks are computed, used immediately to produce a score, then discarded. Only the final score and its component breakdown are written to disk.
What cookies does the website set?
Two first-party cookies: sf_pv (pricing variant, 90 days) and sf_hv (hero variant, 90 days). Neither is used for advertising.
How do I opt out of analytics?
Use your browser’s Do-Not-Track setting or block plausible.io — we honor both.
Private by architecture.
Free for 14 days. No card, no account. Your data never leaves your computer.