SuperCal is a Chrome extension that adds task-management features to Google Calendar: day focus mode, content indicators, bulk event moving, and layout improvements. It enhances the Google Calendar interface directly in your browser without requiring an account or any external service.
SuperCal requests access to your Google Calendar data via the Google Calendar API using the OAuth2 scope https://www.googleapis.com/auth/calendar.events. The specific types of Google user data accessed are:
This data is accessed only on-demand, only while you are actively using the extension, and only to power the features described below.
SuperCal uses Google user data exclusively to provide its in-browser features:
| Feature | Data Used | Purpose |
|---|---|---|
| Content Indicators | Event description and location fields | Detect whether an event has a description or location so the extension can display a visual indicator |
| Bulk Move | Event IDs, start/end times, time zones | Move selected events to a different date via the Calendar API |
SuperCal does not use Google user data for any other purpose, including advertising, profiling, analytics, machine learning, or any purpose beyond the direct in-browser functionality described above.
All data processing happens locally within your browser. API calls are made directly from the extension's service worker to the Google Calendar API — no intermediate server is involved.
SuperCal does not share Google user data with any third party. Specifically:
The only external communication the extension makes is direct API calls to https://www.googleapis.com/calendar/v3/ on your behalf, using your OAuth token.
SuperCal stores only your feature toggle preferences (on/off settings for each feature) in chrome.storage.sync. This data:
OAuth tokens are obtained via Chrome's built-in Identity API (chrome.identity) and are managed entirely by the browser. SuperCal never writes OAuth tokens to chrome.storage, localStorage, cookies, or any other persistent storage. Tokens are used in-memory only for the duration of a single API request.
No Google Calendar data is ever written to disk or persistent storage by this extension.
Because SuperCal does not collect or store any Google user data, there is no calendar data to retain or delete.
The only data stored by SuperCal is your feature toggle preferences in chrome.storage.sync. This data contains no personal information. You can delete it at any time by:
To request deletion of any data or for any privacy-related questions, contact: idan.file@gmail.com
For questions about this privacy policy, contact: idan.file@gmail.com