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for more.

Yes. Free is $0 forever. You can generate quizzes, use all the study tools (flashcards, spaced repetition, streaks, the AI tutor) and browse the community library without ever paying or entering payment details.

A month buys about 12 fresh quizzes on Free, about 150 on Student and about 330 on Pro, at 20 questions each. Underneath, generation is metered in Avi credits — 20 credits per question, so a checked 20-question quiz is 780 once the second answer-key pass is paid for — and that is what your monthly allowance divides into. Notes cost 1.5× and photos or PDFs 1.2×. Free also has a weekly pace — 4,680 credits, about 6 quizzes — so the month can't be spent in one sitting; Student, Pro and Ultra have no weekly quiz cap. Ultra includes unlimited fresh quiz generation for $54.99/month, monthly only; other tools retain Pro allowances and rate and upload limits apply. Popular ATAR topics, replays and saved quizzes are unlimited and never counted.

Ask Avi sits beside every quiz question, marked answer and study recap. Before you answer it gives a hint that never reveals the answer; after you answer it explains the working, corrects the misunderstanding behind a wrong answer, sets a follow-up question on the same idea, and points you at what to study next — all from your own syllabus and your own marking, never a general chatbot. Free includes 25 messages a day (150 a month), Student 750 a month (up to 80 a day) and Pro 2,000 a month with no daily cap. Ultra has the same Ask Avi allowance as Pro. A message that Avi declines — off the syllabus, or with no question in front of it — is never counted. Each answered message also draws a few Avi credits from your study allowance (Ultra quizzes do not use that allowance): 4 for a hint, 10 for a full explanation, against 780 for a quiz.

No, and we would rather say so plainly. The same model writes every quiz on every plan — there is no weaker engine on Free and no stronger one behind the paywall. What money buys is a bigger month, and whole essays marked. On every plan, a second AI independently re-solves each answer key and any question the two disagree on is dropped, and a separate pass checks each question's own figures are consistent and complete. Pro adds an independent check of written quiz answers, which can revise substantial marking disagreements. Whole-essay feedback uses one marking pass. If the additional check is unavailable, the initial marking is used.

Free already marks every answer you write inside a quiz. Student is what marks a whole essay — 8 a day, criterion by criterion — and adds study insights, cheat sheets, concept maps, quizzes from notes you paste in, and about 150 20-question quizzes a month against about 12 on Free. Pro is for the trial block: about 330 20-question quizzes a month, 12 marked essays a day, 50 uploads a day (Free and Student include 5), 30-question mock exams, plus an additional marking check for written quiz answers. Ultra adds unlimited fresh quiz generation for $54.99/month, monthly only. Rate and upload limits apply; other tools retain Pro allowances. Annual saves 16% against paying monthly, and you can change plan or cancel from your account settings.

A cached-topic quiz draws from questions we've already generated for popular ATAR subjects — always unlimited and free for everyone. An AI quiz is freshly written by the AI for your specific notes or a less-common topic. Credits count only the fresh generations.

No. You can generate and play quizzes without signing in. A free account adds cross-device streaks, the weekly leaderboard, and the mistake bank so you can review wrong answers anytime.

All five senior secondary systems: WACE (WA), VCE (Victoria), HSC (NSW), QCE (Queensland), and SACE (SA). Most popular Year 11 & 12 subjects are available, and AI generation works for any topic you type in — including your own notes.

You can start free and stay free: a teacher account gets its own class allowance, good for about 3,470 marked submissions a month, and it never touches your own study credits. The paid plan raises that to about 5,200. Sign up as a teacher and open the teacher dashboard to build quizzes from your own material, print worksheets, run live quiz games, set homework that marks itself, and review class results.