# Market Daybook Trading Journal — Privacy Policy **Effective date:** July 8, 2026 ## Summary Market Daybook Trading Journal is a local-only Chrome extension. It has no account, no server, and makes no network connections. All data you enter — your trades, journal notes, and settings — stays in your browser, on your own device. The developer never receives it. ## What data the app handles The extension works with: - Trades you enter manually, paste from a broker's website, or import from a CSV file. - Journal notes and context you attach to trades (plan strategy, trade mistakes, emotion/confidence ratings, free-text notes). - Column mappings you create or save for paste and CSV import. - Display preferences (your chosen theme) and onboarding/timezone settings. - The trading plan you build (pre-trade checklist and strategies). - Any private-beta check-in you choose to generate. All of this is stored using your browser's built-in local storage, on your own device. Nothing is stored anywhere else. ## What we collect: nothing The extension collects no personal information, no analytics, no telemetry, and no advertising identifiers. It does not set tracking cookies. It has no user accounts and no sign-in. This isn't just a policy — it's enforced by the extension itself. The extension's Content Security Policy includes `connect-src 'none'`, which blocks the extension's pages from making any network connection at all. The app is technically incapable of sending your data anywhere, to us or anyone else. ## Data you choose to share Two features create a file on your device that you can choose to send us: - **Data export.** A "Download CSV" or full JSON backup that contains your trades and journal data, saved to your computer for your own records. - **Private-beta check-in.** A structured feedback file, created locally, that you may email to the developer if you're participating in the beta. The beta check-in never includes your trades, P&L, symbols, account references, or journal notes — only your answers to a short set of structured workflow questions, an optional list of instrument types you trade, and any optional free-text notes you choose to type (for example, a broker name or a description of a point of friction). Redacted import-failure reports, if you choose to share one, work the same way: they contain error codes and structural information about a failed import, and explicitly exclude raw CSV rows, symbols, prices, quantities, timestamps, account references, and order/execution identifiers. Nothing is ever sent automatically. You decide if and when to share a file you've created. ## Your control over your data From the app's **Data & privacy** screen you can: - Export a full local JSON backup or a CSV of your trades at any time. - Delete your trading history, saved column mappings, diagnostics, or all locally stored data, separately or together. Uninstalling the extension removes all of its locally stored data from your browser. ## Children's privacy The extension is not directed at children and does not knowingly collect information from anyone, since it does not collect information from anyone at all. ## Changes to this policy If this policy changes, the effective date above will be updated and the revised policy will be posted at the same URL. ## Contact Questions about this policy or the extension: **[email protected]**