AI subscription

Reading Alphabeta Math is free and stays free. The subscription adds AI study assistance in the mobile app: Ask — on any item, ask about the crux of a proof, its strategy, a particular step, examples and counterexamples, or your own question, answered by an AI grounded in that item and its dependencies — and Check a proof — photograph, upload or paste your own proof and get a verdict listing every defect, the results it depends on, and its crux. More study tools are planned under the same subscription.

How it works

US$9.99/month, with a free 3-day trial: signing in to the app with Google starts it automatically, no card needed. After that, you subscribe here on the website; in the app, sign in with Google using the same email address you enter at checkout — that match is how the app recognises your subscription. Cancel any time from the link in your receipt email; access runs to the end of the period you paid for. AI answers are study assistance, not part of the verified library — the terms of use and privacy policy apply.

The subscription is not available yet — check back soon.