Cassie: Help & Support

Last updated: 20 October 2026

Cassie is a free study buddy: she explains what you're reading, quizzes you and helps you make reviewers. This page covers the questions people ask most. If yours isn't here, reach us below and we'll help.

Contact us

In the app: open Settings → Report a problem or suggest something. It's the quickest way, and you can say what you were doing when it happened.
Email: [email protected]

Getting started

Is Cassie really free?

Yes, with no card needed: 20 questions a day, 20 quick pictures a day and 3 Gemini pictures a week. If you add your own free Groq or Gemini key, you can use Cassie as much as you like.

Do I need an account?

No. You can use Cassie without signing up. Make an account only if you want your profile, settings, saved quiz mistakes, flashcards and exam plans on every device.

Does it work on my phone or tablet?

Yes. Open askcassie.study in your browser and add it to your home screen. The on-page popup and snipping are for the Chrome extension on a computer.

The Chrome extension

How do I add it?

Download the Cassie extension, then unzip it.
Open chrome://extensions and turn on Developer mode (top right).
Click Load unpacked and pick the cassie-extension folder.
Pin Cassie from the puzzle-piece menu. No key needed.

It works in Chrome and Edge on a computer.

Highlighting doesn't do anything on a page

Reload the page. Pages that were already open when you added Cassie need one reload.
Chrome doesn't let any extension work on its own pages, like chrome:// pages and the Chrome Web Store.
Check that Cassie is turned on in chrome://extensions.

It says a new version is ready

If you added Cassie by hand, download the new version, then press Reload on Cassie in chrome://extensions.

When something isn't working

Cassie isn't answering

Check your internet connection, then try again.
If she says she's very busy, lots of people are asking at once. Wait a minute and ask again.
If you've used today's free questions, they come back tomorrow. Your own free Groq or Gemini key (in Settings) has no daily limit.

My chats are gone

Chats are saved in the browser you used, on that device. Clearing your browser's data, a private window, or a different browser or device won't have them. Signing in keeps your profile, settings, quiz mistakes, flashcards and exam plans, but chats stay on the device. You can export a backup in Settings.

Signing in with Google doesn't work

Open Cassie at askcassie.study and try again. If it still fails, tell us through Report a problem or by email, with what the screen said.

Using Cassie the right way

Cassie is for studying: understanding readings, practising and making reviewers. Please don't use her during a graded test or quiz.

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