Privacy Policy (DRAFT, v0.1, 13 Nov 2026)
Short version: your files never leave your browser.
What we process
- Your remittance, deduction and deal files are read and analysed only inside your browser, on your device. They are not uploaded to our servers, and we cannot see them.
- Optional "keep on this device": if you tick it, the results are saved in your browser's local storage (IndexedDB) and deleted automatically after 30 days, or sooner if you click "Delete now" or clear your browser data.
- Unknown codes stay on your device. This version does not send them anywhere for a suggestion. They are marked "needs documents" until you check the backup yourself.
- License key: when you unlock, your Gumroad license key is sent to our server, which checks it with Gumroad's license API. We keep a one-way hash of the key and timestamps for abuse prevention, for up to 13 months. We do not store your email address. Gumroad's privacy policy covers your purchase.
- Site analytics: cookieless, aggregate page views (Vercel Web Analytics). No advertising trackers.
What we never do
We never sell data, never log into your buyer portals, never ask for portal passwords, and never contact your buyers.
Hosting
Vercel Inc. (USA) hosts the site and the license-check function. Server logs (IP address, time, path) are kept per Vercel's standard retention.
Your rights
Contact us via the support link on your Gumroad receipt. Because we hold no files and no email address, there is usually nothing to delete. We will delete any license-hash record on request.
Changes
Material changes will be posted on this page with a new date.
Lumios Sheets · lumitech@mail.grokbot.com