Get back to your book without wondering “wait, who was this again?”

No: every answer is bounded to the position you declared (page, percentage, Kindle location or audio minute). If you ask about something that happens later, Kai gently tells you that's further ahead and won't reveal it. And if you haven't declared a position, it assumes you're just starting and answers in ultra-conservative mode.

It tells you honestly instead of making things up. In that case Kai works as your smart notebook: it uses the characters, positions and notes you record (by text, voice or photo) and helps you remember them. A hallucination is also a spoiler, so we'd rather fall short.

Yes, it's one of our favorite uses. You declare your progress by time or chapter, dictate new characters by voice without taking your earbuds out, and see the names WRITTEN with a list in order of appearance, something an audiobook never gives you.

Yes. The home screen is a microphone: you talk and Kai answers in text instantly, with a ▶ to hear the reply and an optional auto-voice. When you tell it something new (a character, a place, your page), Kai drafts the entry and you just confirm it with a tap: nothing is saved without your OK. And if you'd rather type, you can.

With all of them. On paper you declare the page of YOUR edition (we ask how many pages it has so versions don't get confused), on Kindle the location or percentage, on other ebooks the percentage, and on audio the time. You can also photograph the page and Kai locates it for you.

It works for any story with more names than memory: crime novels, historical fiction, romance, thrillers with three timelines, classics with forty characters. The examples on this page are fantasy because that's where forgetting hurts most, but the spoiler frontier works just the same with any novel, and with narrative non-fiction full of protagonists too.

Goodreads tracks what you read; wikis tell you EVERYTHING (including what you haven't read: a character described in the past tense is already a spoiler). Kai LoreSafe is different: a private, progressive memory that answers only up to where you are. It's not an encyclopedia of the book, it's YOUR augmented memory.

The Free plan includes unlimited books and sagas with all features and 300 KaiCoins per month, forever and with no card. The Reader plan costs US$ 1.99/month (or US$ 19.90/year, 2 months free) with 1,500 monthly KaiCoins and advanced stats for your reading. You pay online with a card or your country's local methods (secure dLocal checkout) and it activates instantly. Both cycles are taken out as a card subscription: the monthly one is charged again every month and the yearly one every 12 months, at the price in effect at that time, until you cancel, and you can cancel whenever you want, keeping the period you already paid for. If you would rather not leave a card, you can pay for a month or a year up front with PSE, Nequi and other local methods: that payment does not renew. No hidden costs.

They're the honest way to charge only for what you use: each Kai action (a message, a spoken reply, a photo of the page) spends a few KaiCoins, and your plan refills your balance every month. To put that in perspective: the Free plan's 300 cover about 25 questions a month, or some 3 good reading sessions with recap and entries, and the Reader's 1,500 let you talk to Kai almost daily. Voice is what spends the most (57 per spoken reply; re-listening to an already generated reply costs nothing). If you run out, nothing is lost: your library and notes stay intact and you can wait for the monthly refill, upgrade your plan, or buy a small pack. KaiCoins are the same currency across every Kai product: the same amount costs the same anywhere.

No. Open the app and say “someone called Marsh showed up, Kelsier's brother”: Kai drafts the entry and you save it with one tap. You can also photograph the page or just type the name. Notes and theories are optional (though once you try them, they become your favorite part).

No: the Codex holds characters, places and organizations (houses, guilds, orders, empires). All with the same protection (Kai's profile only tells what you've already lived) and your notes stay separate. Because forgetting where the capital was also pulls you out of the story.

Completely. Your library, characters and theories are only yours: there's no social feed, nothing is shared with anyone, and you can delete a book (or your account) whenever you want. Kai only uses your notes to answer you better.

Create your free account (just email and password, no card), type your book's title (the cover appears on its own) and say what page you're on. Done: under 2 minutes and you can already ask without fear.

You don't lose a thing. Your whole library, your characters and your notes stay yours and editable, and you keep the Free plan's 300 monthly KaiCoins to keep talking to Kai. If you come back, everything is exactly where you left it, like a good bookmark. And if you were an Early Adopter, your already-paid year is honored until it expires.

Yes, and that's where it shines most. When you add a book from a saga you already follow, the characters from previous volumes are shared automatically, and Kai knows which volumes you've finished to use that context without spoiling the current one.

You start where you are, not from scratch. You declare your position and ask Kai to log in one go the main characters who have already shown up: it drafts the entries, bounded to your page, and you confirm them with a tap. And if it's a saga, you mark the volumes you've already read so they become safe context for the answers, without spoiling the current one.

Mauricio Zúñiga (mauroz.xyz), a lifelong reader with a terrible memory for names, and the Kai family of tools. Real support by email: loresafe@kaistrategylab.com.