Cathedra

Pricing

Recording, transcription, search, the timetable and the calendar are free and stay free. Cathedra AI is the only thing that costs money, because answering a question costs us money.

Billing period

Free

$0.00 Forever, with no time limit.

Cathedra AI Pro

$11.99$69.99 a montha year

Every AI feature, for one term or one year.

Cathedra AI Max

$24.99$149.99 a montha year

The same, and the larger model for questions that span a whole course.

Ask as much as a term needs — There is a fair-use ceiling far above what studying reaches; the app tells you if you ever meet it.

Both yearly plans start with a 7-day free trial. Monthly plans do not. The App Store shows the price in your own currency, which may differ from the figures above.

What each plan includes
Feature Free Pro Max
Recording, with Lock Screen controls Included Included Included
On-device transcription, 40+ languages Included Included Included
Full-text search across the term Included Included Included
Timetable, calendar and reminders Included Included Included
Next Class widget and Control Centre button Included Included Included
Summaries written on the device Included Included Included
Flashcards with spaced repetition Included Included Included
Photographs and PDF slides on a lecture Included Included Included
Sync through your own iCloud Included Included Included
Ask a question about one lecture Not included Included Included
Ask a question about a whole course Not included Included Included
Ask a question while the lecture is running Not included Included Included
Quizzes, translation, slides and syllabus read Not included Included Included
Course questions answered by the larger model Not included Not included Included

Renewal

Subscriptions renew automatically until you cancel. Apple charges the account within 24 hours of the end of the current period. A free trial ends the moment you subscribe to the same plan.

Cancelling

Subscriptions are managed by Apple, not by us. On your iPhone: Settings → your name → Subscriptions → Cathedra. Cancelling keeps the whole app working; only the AI answers stop at the end of the period you have paid for.

Refunds

Where you bought it decides who refunds it. Bought in the app, refunds are Apple's to give, at reportaproblem.apple.com — the payment never reaches us. Bought here, write to support@cathedra.study within 14 days and you get all of it back, for any reason or none.