Privacy policy

Yearly Grid for Google Calendar (Chrome extension) · Effective 25 October 2026

Yearly Grid shows your Google Calendar as a year-at-a-glance grid and lets you create, edit and delete events from it. This policy explains what data it uses and what happens to it. The short version: your calendar data goes only between your browser and Google, and nowhere else.

What the extension accesses

When you sign in, you grant the extension two Google permissions:

• See the list of your calendars (calendar.calendarlist.readonly) — their names and colours, so you can choose which to show.
• View and edit events on your calendars (calendar.events) — to draw events on the grid, and to create, change, move or delete an event when you do so in the extension.

Sign-in uses Chrome's built-in Google sign-in (chrome.identity). The extension never sees your Google password.

How the data is used

• Calendar data is used only to show your calendars on the grid and to carry out changes you make.
• The extension changes an event only when you save or delete it yourself.
• There is no server. The extension calls the Google Calendar API directly from your browser; no calendar data is sent to the developer or any third party.
• There are no analytics, ads or tracking, and no data is sold or shared.

What is stored on your computer

• A copy of your calendar list and of the events in the years you've viewed, kept in Chrome's local extension storage so the grid opens instantly and works offline.
• Your preferences: which calendars are shown, theme, colours, font, text size and filters.

This data stays on your computer. Removing the extension deletes it.

Limited Use

Yearly Grid's use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements. Data from Google is used only to provide the features described above, is never transferred to others, is never used for advertising, and is never read by humans.

Revoking access

Use Sign out in the extension, and remove Yearly Grid's access at any time at myaccount.google.com/permissions. Uninstalling the extension removes its local data.

Changes and contact

If this policy changes, the new version will be posted on this page with a new effective date. Questions or concerns: open an issue at github.com/vkotaru/yearly-grid/issues.