BettersubbookPrivacy & data
Last updated September 30, 2026 · Version 1.0.0
In short: Bettersubbook has no account, no server, no ads and no analytics. Your shifts and calendar stay in your browser. Nothing is sent to the developer.
What Bettersubbook stores (on your computer only)
Everything below lives in your browser's extension storage for this extension. It never leaves your computer unless a section further down says so.
- Shifts you approved or added, inservices, and the busy time made from your calendar (event titles, dates and times).
- Events found in your calendar that are waiting in Review.
- Your settings: theme, colors, font, scenes, sort and filter choices, and (if you use it) the city for Live weather.
- If you link a calendar account: the sign-in token the provider gave us, and for Microsoft the account's email address, shown in Settings so you can tell which account is linked.
- Calendar links you added. Treat a link like a password, since anyone who has it can read that calendar. It is kept only in this extension's storage.
What is sent over the internet, and where
| When | Sent to | What |
|---|---|---|
| You link Microsoft and scan | Microsoft (login.microsoftonline.com, graph.microsoft.com) | Your sign-in, and a read-only request for your calendar events. The events come straight to your browser. |
| You link Google and scan (once available) | Google (accounts.google.com, googleapis.com) | Your sign-in, and a read-only request (calendar.readonly) for your calendar events. The events come straight to your browser. |
| You add a calendar link | The address you pasted (and again each hour) | A plain request for that address. Nothing about you is added. |
| You turn on Live weather, after you agree to it | Open-Meteo (open-meteo.com) | The place name you type into the search box, and the latitude and longitude of the place you pick. Nothing else. |
| You press Send feedback | Google Forms (opens in a new tab) | Only what you type into the form. |
There is no Bettersubbook server. Nothing is sent to the developer, there is no tracking, and no data is sold, shared or used for advertising. Calendar data is used only to find your shifts and show your free time, and is never used for anything else.
The Subbook page
On the Subbook site, Bettersubbook reads the shift list that is already on the page so it can sort, filter and fill in the form. That information stays in your browser. It does nothing on other sites, and it never submits a request for you.
Google Calendar (when available)
Bettersubbook's use and transfer to any other app of information received from Google APIs will adhere to the Google API Services User Data Policy, including the Limited Use requirements. We only request read-only access to your calendars. You can revoke access at any time by unlinking the calendar in Settings, or at myaccount.google.com/permissions.
Your choices
- Unlink a calendar in Settings → Calendar. The sign-in token is deleted (and revoked with Google).
- Remove a calendar link in Settings → Calendar, to stop it being read.
- Turn off Live weather at any time in Themes & scenes → Sky.
- Delete saved data in Settings → Data & reset, or remove the add-on to erase everything.
Children
Bettersubbook is meant for student staff and is not directed at children under 13.
Changes
If this policy changes, the new version ships with the extension and the date above changes. A change that sends more data anywhere will always ask for your consent first.
Contact
Questions about privacy? Use Send feedback.