Sparrow BTC Dashboard
Privacy Policy

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This Privacy Policy describes how Sparrow BTC Dashboard ("we," "our," or "us") handles information in relation to our minimal browser extension (the "Extension") available on the Chrome Web Store and compatible Chromium-based browsers (Google Chrome, Microsoft Edge, Brave, Opera, Arc, Vivaldi, etc.).

1. Single Purpose (Chrome Web Store) #

Sparrow BTC Dashboard has one single purpose: to display a lightweight Bitcoin market dashboard inside a small browser popup when you click the toolbar icon. It shows static demo Bitcoin price information, a 7-day trend chart, a BTC-to-fiat converter, and in-memory price alerts that exist only while the popup is open.

2. ✔ Zero Chrome Permissions Declared #

The Extension is intentionally extremely minimal. Its manifest.json file declares zero Chrome API permissions and zero host permissions. There is no "permissions": [ … ] array and no "host_permissions": [ … ] array at all.

This means the Extension does not request any of the following (and therefore can never use them):

• No tabs permission — cannot see your open tabs, URLs, or browsing history
• No storage permission — does not use Chrome cloud sync storage
• No scripting permission — cannot inject scripts into websites
• No activeTab permission — cannot access the current page
• No cookies permission — cannot read or write cookies
• No bookmarks, downloads, history, geolocation, notifications, clipboard, management, or any other browser API permission
• No "<all_urls>" or any wildcard host permissions

When you visit chrome://extensions → Details → Site access and permissions, you will see: "This extension has no requested permissions".

3. Information We Do NOT Collect #

We want to be unambiguous: Sparrow BTC Dashboard does not collect, store, log, or transmit any personal information or user data.

• No user registration, login, or account creation of any kind
• No names, emails, phone numbers, usernames, or personal identifiers
• No browser history, bookmarks, saved passwords, cookies, tabs, or web page content
• No device contacts, photos, location, microphone, camera, clipboard, or other personal device data
• No analytics, telemetry, session recordings, heatmaps, crash reports, or behavioral data
• No cookies, pixels, fingerprinting, or tracking technologies of any kind
• No selling, sharing, renting, or transferring of any data — because there is no data to share

4. In-Memory Preferences Only — No Persistent Storage #

The Extension does not use the browser localStorage API, does not use chrome.storage (it has no permission to do so), and does not persistently store any preferences or data whatsoever.

• No persistent storage of any kind — no coins, no pinned items, no alert targets, no currency choice, no theme, no API keys, no settings are ever written to disk
• Any choices you make inside the popup (theme, currency, alerts) are kept only in JavaScript memory for the lifetime of that single popup session
• When you close the popup, all in-memory state is permanently discarded instantly
• The next time you open the popup, it starts from clean defaults — there is nothing left over from the previous session, nothing to clear, nothing to delete
• Uninstalling the extension also therefore leaves absolutely zero residual data behind

5. No Network Requests (Static / Demo Data) #

The Extension performs zero network requests. It does not make any fetch(), XMLHttpRequest, WebSocket, navigator.sendBeacon, or any other outbound connection of any kind.

• No external API is ever contacted — no CoinGecko, no price feed, no remote service, no CDN
• All price numbers, 7-day sparklines, and market figures shown in the popup are locally generated static / demo data hardcoded inside the extension bundle itself
• Because zero requests are made, your public IP address is never visible to any third-party server as a result of using this extension
• There is no Refresh that goes out to the internet; Refresh only re-samples the bundled static demo data
• All coin icons are inline SVG data URIs bundled inside the extension — no external image loads

6. Third-Party Services #

None of the following are present, used, or integrated into the Extension:

• No Google Analytics, Firebase Analytics, Mixpanel, Amplitude, Plausible, or any analytics SDK
• No Google Ads, AdSense, AdMob, Meta Audience, AppLovin, Unity Ads, or any advertising network / ad tracker
• No Sentry, Crashlytics, Bugsnag, or crash / error reporting
• No remote log collection, session replay, or heatmapping
• No Google Sign-In, Firebase Auth, Auth0, Social Login, or authentication providers — because there is no sign-in
• No third-party market data API, price feed, remote CDN, or any external service whatsoever

There are zero third-party services contacted by the Extension under any circumstance.

7. Data Security (By Design) #

8. Children's Privacy #

The Extension is safe for users of all ages, including children under 13, because we do not collect any personal information from anyone regardless of age. There are no accounts, no messaging, no social features, and no mechanism to upload, transmit, or store any personal information. No network requests are ever made.

9. Changes to This Policy #

We may update this Privacy Policy from time to time. Any changes will be reflected by updating the "Effective Date" at the top of this page.

Because the Extension makes zero network requests, stores zero data, and declares zero permissions, future changes would only be needed if we either:

1. Add new features that require new Chrome permissions (we will never do this silently — any new permission would be clearly visible in a new Chrome Web Store update, and you may choose whether to update or not), OR
2. Begin contacting a third-party API for any reason (currently there are none, and there is no plan to add any)

In either case, the core commitments — zero collection of personal information, zero accounts, zero tracking, zero ad SDKs, and the "no persistent storage + no network requests" design — if changed, would be described explicitly in a new policy version posted at this URL.

10. Contact Us #

If you have any questions about this Privacy Policy, Chrome Web Store compliance, or the data practices of the Sparrow BTC Dashboard Extension, please contact us via:

• Support Email: support@sparrowbtcdashboard.online
• Admin Email: dev@sparrowbtcdashboard.online
• The Support email / support channel listed on the official Sparrow BTC Dashboard listing page in the Chrome Web Store