Your trade data never has to leave your device.
The web app stores your seller profile, deal fields, drafts and templates in your browser localStorage (keys prefixed tkq_). This is done by your browser on your own device; we do not run a user database for it.
An optional sync endpoint exists, but it is switched off by default. Nothing is uploaded unless you explicitly enable cloud sync in the toolbar. If enabled, your drafts, profile and templates are sent to our Cloudflare Worker (D1 database and R2 backup) under an anonymous device ID. You can switch it off again at any time, and clearing browser data removes local copies.
A privacy-friendly, cookie-free Cloudflare Web Analytics beacon may be enabled. It records aggregate page views and referrers only — no form content, no customer names, no document data.
If you activate Pro, the code and an anonymous device ID are sent to /api/verify and /api/activate. No payment card data is handled by this site; payments, if offered, are processed by a third-party merchant of record.
The app sets no advertising or tracking cookies. Exchange-rate data is fetched through our /api/rates proxy, which calls public rate providers; no document data is sent with those requests.
Use the toolbar to save/load your profile, clear drafts, or switch sync off. Clearing site data in your browser deletes all locally stored drafts and templates. Contact us at the address on the FAQ page for deletion requests.