Terms of sale
In effect from 7 October 2026. Questions: support@terzina.app.
These terms cover buying Terzina’s book: the one payment that opens every lesson in the Commedia. They are between you and Terzina.app, who makes Terzina. Using Terzina without buying anything is free and needs no terms beyond ordinary good sense.
What stays free
Everyone may read and hear the whole poem, use the shared glossary and the maps, and learn Inferno I in full, with or without an account. We do not intend to take any of this away.
What you buy
The book is a one-time purchase, currently $8 (US dollars, with any sales tax or VAT shown at checkout). It is not a subscription and nothing renews. It gives the account you bought it with, for your personal use:
- every lesson in the poem, including those illuminated after you buy;
- verses illuminated on request;
- conversation with your guide, Virgil and then Beatrice;
- pronunciation feedback, and every guardian’s trial.
The guide and pronunciation feedback are generated by AI services and are subject to fair daily limits, so that one person’s use cannot run up costs for everyone. They may occasionally be unavailable, and like any AI they can be wrong: the hand-written lessons are the authority.
The book belongs to one account. Please don’t share your account, and don’t use Terzina to copy its lessons or recordings in bulk.
How payment works
Payment is taken by Stripe. Purchases are sold through Link, Stripe’s service that acts as the reseller and handles tax, so your receipt comes from Link, and Link’s terms and privacy policy also apply to the payment itself. We never see or store your card details.
Refunds
If the book is not for you, write to support@terzina.app from the email address on your account within 7 days of buying it, and we will refund you in full. No reasons needed. After 7 days, purchases are final, except where the law where you live gives you more.
A refunded book is no longer yours: its lessons close again, and everything free stays open. Your progress is kept.
“Yours for good”
The book stays open on your account for as long as Terzina is offered. If we ever stop offering Terzina, we will tell you at least 60 days before, by email and on the site. We may change how Terzina looks and works, and improve or replace its lessons and the AI behind the guide, but we will not remove what the book includes from people who bought it.
The poem and our work
Dante’s text is in the public domain. Terzina’s annotations, paraphrases, exercises, recordings and design are ours, and the book lets you use them within Terzina, not copy or redistribute them.
Responsibility
Terzina is offered as it is. To the extent the law allows, we are not liable for indirect losses, and our total liability to you is limited to what you paid for the book. Nothing here limits rights you have by law that cannot be limited.
The rest
These terms are governed by the laws of the Commonwealth of Virginia, United States, without affecting any mandatory consumer protection where you live. If we change them, the version in effect when you bought the book applies to your purchase. How we handle your data is in the Privacy policy. Anything else: support@terzina.app.