Privacy

Tai Chi Coach's privacy rule is simple: your video never leaves your device.

What happens to your video

• During a practice session, each camera frame is analysed in your browser by a pose-tracking model that ships with the app. It finds the positions of your body joints and discards the frame. No video is sent anywhere.
• Only the joint positions (a few dozen numbers) are used, for the current exercise, to check your stance and movement. Nothing is recorded, uploaded, shared or stored.
• The camera is only on during a practice session after you start one. It turns off when you go home, press Turn off, or switch to another tab.

What is stored on your device

• Which items you have done, your points, badges, practice days and settings, your standing-position calibration, and whether you have read the safety check.
• An offline copy of the app, so it works without network after your first visit.
• All of this lives in your browser on your device. There are no accounts, ads, cookies, analytics or trackers.

How to delete it

• On the home page, open Offline proof and press Delete all my data. It shows what was stored before and after.
• Or open Settings and press Clear progress.
• Or clear this site's data in your browser settings.

What the app cannot do

• The app loads nothing from other websites. A security policy (connect-src 'self') blocks connections anywhere else, so the app cannot send data anywhere even if it tried.
• The links on the About page open other websites in a new tab. Those sites have their own privacy policies, and Tai Chi Coach sends them nothing.
• Like any website, the server that delivers the app's files may keep standard technical logs (such as IP addresses) of those downloads. The app itself sends nothing.

Prove it yourself

Press Offline proof on the home page. It shows a live log of every network request the page makes, lets you simulate a fully offline session, shows exactly what is stored, and deletes it all with one button.

Tai Chi Coach version 1.0.0 · Disclaimer