Your account
If you save your progress, you sign in with your email address, with Apple, or with Google. With email, we keep the address. With Apple, we get the identifier Apple gives us for you, your name the first time you sign in, and your email or the private relay address Apple makes for you if you chose Hide My Email; we also keep a token from Apple so we can revoke our access to your Apple account when you delete yours. With Google, we get your name, your email address and your Google account identifier. We use these to sign you in, to keep your progress on one account, and to send the emails below.
Your profile
Your first and last name if you give them, a username and a number if you pick one, the choices that make up your avatar (the face is drawn from fifteen small numbers, never a photo), why you are learning and how much you already know, your daily goal, whether sounds are on, your notification switches and reminder time, and the day you last learned.
Your progress
With an account, the app keeps a copy of your learning on our server so it is safe and follows you to a new phone: your Paths and their lessons, the Bites, checks and capstones you finished and your scores, your Keep Sharp cards and how well each fact is known, your XP, level, streak and badges, your tally of Bites and Paths and minutes, which days you learned, today’s and this week’s XP for the friends board, and the words you held for your Burrow. Without an account, all of this stays on your phone.
What you ask Axo to teach
The topic you type, your answers to Axo’s questions about it, a typed answer when Axo grades one, the question you tapped “Help me learn this” on, and any material you add: pasted text, a file (PDF, ePub, text or Markdown), a link to a web page, photos of pages, or the name of a book. Axo uses these to build your Paths, to grade you, and to suggest what to learn next.
Friends and learning together
If you use friends, we keep your friend requests and who accepted them, the nudges and kudos you send and receive and the day you sent them, the Paths you invited friends to and joined, and the lesson content shared between the copies of a Path you learn together. While you are inside a Path you share with friends, your phone tells theirs where you are on it; that live position is stored nowhere and is gone the moment you leave.
Notifications
Daily reminders and streak alerts are scheduled by your phone itself and never pass through our server. If you allow notifications while signed in, your phone’s push token, its platform and its model name are kept on your account so a friend’s nudge, kudos, request, yes, invite, join or finish can reach you; the token leaves your account when you sign out. We keep a short log of which of those notes were sent, so each is sent once.
Purchases
If you buy Plus or Pro, Apple takes the payment. Apple tells RevenueCat, the service that tracks subscriptions for us, what you bought and when it renews. RevenueCat knows you by your account’s ID, a random code, not by your name or email. If you buy as a guest, it uses a random ID until you sign in. We never see your card or your Apple ID password.
The Stream
The Stream turns the Bites you have learned into short spoken clips. The text of those lessons goes to our server to write and voice the clips. Clips are cached by their content and shared with everyone whose lessons contain the same words. Your plan’s daily count of fresh clips is kept on your phone.
Emails
We send your sign-in codes, one welcome email after you first save your progress, and an evening reminder when a streak of two days or more is about to break and your phone is not already set to alert you. The welcome and reminder emails use your first name and the name of your Path or your next Bite. Every email has our address to reply to; to stop the reminders, turn off the streak alert in the app or email us.
This website
This site has no analytics, ads or tracking tools, and sets no cookies for visitors. It remembers in your own browser whether you turned sounds off, and nothing more. One cookie exists on a private page only our team can open. If you join the waitlist, we keep your email address, the topic you typed (if any), the page you signed up on, the time, your browser’s name and version, and, if a friend’s link brought you, the code on that link. We give you a link of your own with a short code made from your email, and we count the people who join through it. To keep bots out without asking you to do anything, our server checks that the address’s domain can receive mail, drops a sign-up that a script filled in, keeps one record per address, and remembers the network address of recent sign-ups for ten minutes to stop a flood. We use all of this only to run the waitlist and to tell you about Axo.
Technical logs
Our hosting provider keeps short technical logs of each request to our server: the time, the address it came from, the page or route, and any error. Our own log lines note when a request came in and what failed; a few also note a book Axo researched or why a topic was turned down. We use logs to keep Axo running and to find problems, not to profile you.
What we don’t collect
No location, no contacts, no advertising identifier, no tracking across other apps or sites, and no recordings of you. Axo plays sound and never records it. Axo opens your photo library only when you choose to add photos of pages, and gets only the photos you pick.