Airo started as a simple idea: turn anything you're learning into a quiz, fast. Over the last few months we've watched what students actually do with it — paste in lecture notes the night before an exam, upload a textbook chapter on a Sunday afternoon, share a quiz with a study group at 2 a.m. — and we've rebuilt Airo around that reality.
What's new
Adaptive difficulty. Airo now watches how you answer and adjusts. Get three in a row right and the questions get harder. Miss one and the next few will probe the same idea from different angles. The goal isn't to make you feel good or bad about your score — it's to put you in the part of the material you actually need to practice.
Real explanations. Every question now ships with an explanation that goes past "the correct answer is B." Airo shows you why the right answer is right, why the tempting wrong answer is wrong, and where in your source material the idea came from. If you want to push further, ask a follow-up question and Airo answers in context.
Spaced-repetition flashcards. Anything you've struggled with becomes a flashcard, scheduled at the intervals where you're most likely to forget it. The cards live alongside your quizzes, so a single study session can move fluidly between recall, practice, and review.
Study guides. Drop in a syllabus, a long PDF, or a chapter and Airo writes you a structured guide — the key concepts, the relationships between them, and the questions a thoughtful teacher would ask. It's the fastest way we've found to turn a wall of reading into something you can actually study.
Collaborative study sets. Share a set with a classmate, a study group, or an entire class. Edits sync. Comments stay attached to specific questions. Everyone sees the same source material so you can argue about answers in the margins where the argument belongs.
A faster, calmer interface. The old Airo had grown a lot of buttons. The new one has fewer. Generation is noticeably quicker, the player puts your question front and center, and the whole app holds its shape on a phone the same way it does on a laptop.
Who gets it
Everyone, today. Airo V2 is available on every Invariant plan, including the free tier. We don't believe the better study tool should be the paid one — we believe the better study tool should be the one everyone has.
What's next
We're already working on multi-modal sources (handwritten notes, diagrams, recorded lectures), a richer practice mode for math and code, and a parent/teacher view for shared sets. If there's something you wish Airo did, we'd love to hear it — write to hello@invariant.ai.
Thank you for studying with us. Go pass something hard.