Every question, answered short.

Axo is an AI learning app for iPhone that turns any topic, or any document you paste in, into a short course you actually finish. Each course (a Path) is 16 five-minute Bites across four units, ends with a capstone you pass at 80%, and is followed by spaced review that brings each idea back right before you’d forget it. Your guide is Axo, an axolotl who reacts to every answer.

Yes. The Free plan gives you two new Paths a month, forever, with spaced review on three Paths. Plus is $9.99 a month or $59.99 a year with 14 days free, for fifteen new Paths a month. Pro is $19.99 a month or $119.99 a year, for forty.

Yes. Add a PDF, an ePub, a text file, a link to an article or photos of pages, or paste the text, and Axo builds a Path from it. It never adds a fact that isn’t in your file, and every question names its page. One Path holds up to 30,000 words; a longer document becomes a series, one Path per part.

A chatbot gives you an answer. Axo gives you a course with an end. Every Bite finishes in questions instead of a summary, every Path finishes in a capstone you have to pass, and spaced review brings each idea back before you forget it. You read a chatbot’s answer once. Axo checks that you kept it.

The habit is the same: short lessons, a streak, and a mascot who reacts to you. The subject is the difference. Axo has no fixed catalogue. You name a topic or bring a document, and it builds the course for you. Each course also has an end: sixteen Bites and a capstone, then review.

About two hours. A Path is four units of four Bites, and one Bite takes five to seven minutes. It ends with a 16-question capstone that you pass at 80%. After that, Keep Sharp brings the ideas back in short review sessions.

Now. Axo is on the App Store for iPhone, on iOS 16.4 or later. You can also play one Bite on this site, with no sign-up.

Parcel Digital LLC, a Nevada company in Las Vegas. Axo, the AI learning app with the axolotl, lives at getaxo.app. It is not connected to any other app or company with “Axo” in its name.

A Path is one course. It has four units of four Bites, a capstone at the end, and a rail that shows how far you are. Every Path has the same shape, so you always know how much is left.

A Bite is one lesson of five to seven minutes: a scene where Axo talks an idea through, a short read, then five questions. You earn XP only when you recall the answer.

Keep Sharp is spaced review. Each idea you learn gets a memory score and a next-review date, and Keep Sharp asks you about the ideas that are due today, mixed across all your Paths.

Any topic you can name, and any material you can add. People ask for the NBA salary cap, HVAC basics, contract law for freelancers and enough F1 for Sunday. You can also name a book, and Axo researches it from public sources.

The outline appears in under 10 seconds and the first Bite in under 20. The other Bites are written when you open them.

Yes. Paste any length of text, or add a file. You then pick a reading level: Plain, Standard or Technical. The wording changes with the level. The facts do not.

An axolotl regrows what it loses: a limb, a jaw, even part of its brain. That is the idea of the app. One Bite at a time, you rebuild the attention and memory that the feed wears away.

Eight well-replicated findings from cognitive psychology, among them retrieval practice, spaced repetition, desirable difficulty and interleaving. Every exercise type and every review rule in Axo comes from one of them.

Because pulling an answer out of memory strengthens it far more than reading it again. This is retrieval practice, shown by Roediger and Karpicke in 2006 and in hundreds of studies since.

Memory fades on a curve that Hermann Ebbinghaus first drew in 1885: fast at first, then slower. A review just before you would forget resets the curve with a flatter slope. Keep Sharp schedules each review for that moment.

No. You buy Paths. One Path is one course: four units, about two hours. We meter the AI underneath silently so you never have to think about tokens.

Axo tells you in plain words, and your count starts again on the 1st of the month. The Paths you have and Keep Sharp keep working. On Free or Plus, you can move up a plan.

Axo’s own voice, the same one on every plan. Plus and Pro add eight more voices. With no connection, your phone’s built-in voice stands in.

The yearly Plus plan starts with 14 days free, once per Apple ID. The app shows the day the trial ends before you start. Cancel before then and you pay nothing.

Yes. A Path built from your own material belongs to your account, and no other learner sees it. Our server keeps the text so it can write your Bites. The privacy policy has the details.

A Path built from your document uses only what is in your document, and every question names its page. A Path about a book is built from public sources you can open. A Path from a typed topic comes from the AI’s general knowledge, so check anything that matters.

A swipe feed of short spoken clips made from the Bites you have learned, so review happens while you scroll. Clips on new ground, a word you held or a Path offered next, are counted per day by plan; clips from what you already learned are not.

Any time, from Settings in the app (the sliders at the top right of You, then Manage subscription) or in your iPhone’s Settings under Subscriptions. Your Paths and badges stay, and you go back to Free’s limits at the end of the period you paid for.

Any iPhone on iOS 16.4 or later.

No. Your document is used only to build your Path. We do not train models on it, and we do not let anyone else.

Your first name, your username, your level, your streak, your badges and your XP. Friends never see your Paths. Nobody is added unless both people say yes.

In Axo, open Settings and tap Delete account. Everything on the account is deleted at once and cannot be recovered. Your plan is separate: cancel it with Apple, or it renews.