Support
Write to support@cathedra.study. Say which iPhone and which iOS version, and what you tapped before it went wrong — the more specific, the faster the answer.
My transcript is empty or in the wrong language
Open the lecture. If it says how few words came back, tap the language it offers — the lecture is read again on your iPhone. The course language is under the course's Edit screen.
Where is my audio?
On the iPhone that recorded it, and nowhere else. Courses, timetables and transcripts sync through your iCloud; recordings do not, because a term of audio would fill it.
A lecture landed in the wrong week
Open it, then Edit lecture from the menu and change the date. Importing from a week's own Import button files it under that week.
Cathedra AI and my data
Questions, photographs you choose to have described and syllabi you choose to read are sent to DeepSeek through our proxy, only after you agree on a screen that says so. Nothing sent is stored. The details are in the privacy policy.
Cancelling
Subscriptions are managed by Apple: Settings → your name → Subscriptions. Cancelling keeps the app working; only the AI answers stop at the end of the period.