Centband Privacy Policy
Last updated: November 13, 2026. Applies to the Centband web app and the Centband browser extension from Wood Between Studio.
The short version
Centband has no account, no ads and no tracking, and the extension contains no analytics. Your watchlists, notes, settings, API keys, cached quotes and license key are stored only on your device, in your browser's storage. We never see them.
What leaves your device, and where it goes
- Your market-data provider (Alpha Vantage, Finnhub, and/or Twelve Data). If you add your own API key, Centband sends that key from your browser only to that provider. Alpha Vantage is asked for a movers snapshot (no ticker list is sent with that call). Finnhub and Twelve Data receive the ticker symbols on the list you are viewing, to get quotes and enrichment. Wood Between Studio is not in the middle and never receives your key. The provider's own privacy policy applies.
- SEC filing checks (optional, on by default). To check SEC filings, Centband sends a ticker symbol (only the symbol) to Wood Between Studio's small filing service on Cloudflare, which asks the SEC's public EDGAR system and returns a summary. The service keeps no logs of who asked; Cloudflare, as the host, processes the request (including your IP address) to deliver it. You can turn filing checks off in Settings.
- Gumroad (only if you unlock Pro). When you paste a license key and choose Unlock, Centband sends that key and the product ID to Gumroad's license check, and re-checks at most once a week.
- Notifications (Pro alerts). If you turn on alerts, your browser shows notifications on your device. Nothing is sent to us.
What we don't do
- We don't collect portfolio, brokerage or payment details, and we never ask for brokerage logins.
- We don't sell, share or rent data. We don't use cookies or fingerprinting. The only analytics is the cookieless page-view count on our website (including the web app), described under Website analytics; the extension has none.
- We don't share one user's quotes with anyone else.
Your choices
Remove your API keys or turn off filing checks in Settings at any time. "Delete all Centband data" in Settings erases everything Centband stored on this device. Uninstalling the extension or clearing the site's data in your browser does the same.
Extension permissions
storage keeps your watchlists and settings on the device; alarms runs Pro alert checks on a schedule while your browser is open; notifications (optional, asked only when you turn on alerts) shows those alerts. The extension has no access to the websites you visit.
Children
Centband is not meant for children under 13 and doesn't knowingly collect anything from anyone.
Contact
Wood Between Studio · woodbetweenstudio+pennytracker@mail.grokbot.com
Website analytics
The Wood Between Studio website (www.woodbetweenstudio.com), including the web-app versions of our tools, uses Cloudflare Web Analytics to count page views. It is a privacy-first, cookieless service: it sets no cookies, doesn't fingerprint your browser or device, doesn't track you across other sites and collects no personal data. Its small script sends only page-view and page-load metrics (such as the page address, the referring site, browser type and load time) to Cloudflare. It never receives your files, recordings, watchlists, keys, or anything you type or process in a tool: those stay on your device, and the tools keep working offline (the counter simply doesn't load). The browser extensions themselves contain no analytics.