Koluba Support

Last updated: September 6, 2026

What Koluba does Koluba turns a learning goal or your own notes into a course: lessons, a cover image, on-device lesson audio, a quiz, and flashcards. You can type a goal, paste text, add a link, import files, pick photos for OCR, or scan pages.

Plans • Free: up to 5 generations per month • Plus Monthly: $12.00 USD, or the local price Apple shows — up to 30 generations per month • Pro Monthly: $35.00 USD, or the local price Apple shows — up to 100 generations per month, plus export and offline use of saved lessons

A generation is used when you create a course, regenerate a quiz, or regenerate flashcards. Source-material limits also depend on your plan.

Billing Subscribe from Upgrade in Koluba. Payment is charged to your Apple ID. Subscriptions auto-renew unless you cancel at least 24 hours before the end of the current period. Manage or cancel in iPhone Settings → Apple ID → Subscriptions. We cannot cancel an Apple subscription for you.

Course language The course is written in the language of the text you type or upload. The language in Settings only changes the Koluba interface.

Audio Lesson audio uses Apple’s on-device speech. It is not generated by a cloud voice API.

Common questions • Generation failed: check your network, then try again. If it still fails, email us with the time and what you uploaded. • Audio does not match the text: make sure you are on the latest app version. Audio reads the lesson on screen. • Cannot add more files: your plan’s material limit may be reached. Upgrade from Settings, or remove some items. • Restore purchases: Apple restores Plus or Pro automatically when you sign in with the same Apple ID.

We usually reply within 2 business days.