Pricing
Free covers one whole class. Pro covers your whole schedule — pay once for a semester, or by the year.
| Plan | Price | What you get |
|---|---|---|
| Free | $0 forever | 1 class, every feature, 3 recordings/week |
| Pro — Semester | $29 one-time | Unlimited classes & recordings for one semester (150 days from purchase), no subscription |
| Pro — Year (best value) | $49/yr | Cheaper than two semesters, includes summer |
| Founding student | $29 first year, then $39/yr for life | First 100 students with a .edu email No founding spots left right now |
Columbia .edu addresses are eligible today — the student page has the current list.
Every install starts with a 14-day Pro trial — no card, nothing to cancel.
Free isn’t a demo: it’s one whole class with everything, capped at 3 recordings a week.
Prices in USD. Tax added at checkout where required. AI usage is billed by your AI provider, not us — usually cents per lecture.
Automatic renewal: Pro — Year renews automatically every year at $49/yr, and Founding student at $39/yr after the first year (plus tax where required), until you cancel. Cancel anytime online in the customer portal below; Pro stays on until the end of the year you paid for. We email you a notice 15–45 days before each renewal. Pro — Semester is a single payment and never renews. By buying you agree to the Terms, including automatic renewal and the refund policy.
Buying opens on launch day. Get notified and you’ll hear first.
After you buy
Your Pro key is in your email from Lemon Squeezy (subject includes “Tentaku”). Open Tentaku → Settings → License → paste the key → Apply. The badge turns to “Pro ✓ · Pro — Year” (or your plan; plain “Pro ✓” if Lemon Squeezy returns no product name). A key covers 2 computers. To move it: on the old computer, Settings → License → Apply with an empty box, which frees the seat.
- Manage, cancel and receipt links appear here when buying opens.
- 14-day refund on your first purchase
What happens when Pro ends
You drop back to Free — you never lose your data. Every note, card and transcript stays on your computer in plain files. With several classes, you pick one Free class that keeps every feature; the others become read-only (open, search, export, review existing flashcards) until you go Pro or switch, once every 30 days.