Yes, there is a free plan, and it does not ask for a card. You upload your lecture material, turn it into flashcards, quizzes, summaries and mind maps, and study all of it as much as you like. The part that is metered is making new material: a free account comes with a monthly allowance of AI generations.
Chatting with Max, the AI tutor, is unlimited on every plan, the free one included. Premium takes the cap off generating and opens up a few things the free plan does not have. What Premium costs depends on the country you are in, so the amount you see at checkout is in your own currency.
What the free plan covers
Everything you have already made is yours to study. Flashcards and quizzes built from your own upload, the summaries and mind maps that come with them, and the spaced repetition that schedules your reviews: none of that is metered. Once a deck exists you can go through it as often as you want, for as long as you want.
Max is on the free plan too, with no message cap and no daily limit. Ask about anything in your decks and courses and you get an answer with the source it came from. Max will not build new material for you until you subscribe, but talking a topic through costs nothing.
What Premium adds
Premium lifts the monthly cap, so you generate as much as the material in front of you needs.
Three things open up that the free plan does not have at all. Mock exams, which are timed and graded at course level and can be modelled on a past paper you upload. Podcasts, two voices discussing your material, with their own monthly allowance of episodes on top of the generation allowance. And study groups without the limit on how many of them you can join.
Max changes as well. Instead of only discussing the material, Max can make it: ask in the chat for cards or a quiz on the chapter you keep getting wrong, and it appears in your deck.
What Premium does not change
The output. A free account and a Premium account generate from the same upload in the same way, so if the cards do not match your lecture, paying will not fix that. Try it on your own material first, which is what the free allowance is for.
The free plan is also not a trial in disguise. Nothing expires, no countdown runs, and what you have built stays in your account whether you ever pay or not.
What it costs
Prices are set per country, so there is no single figure to quote here. Open the checkout and you see the price for where you are, in your own currency, before anything is charged.
You can pay monthly, quarterly or yearly. The longer cycles work out lower per month, which is worth the arithmetic if you are covering a full semester rather than one exam.
If you subscribe inside the iPhone or Android app, the price in the App Store or Google Play can differ from the one on the web, so it is worth comparing the two.
Cancelling
Cancel in your settings, under subscriptions, whenever you want. Premium keeps running to the end of the period you have already paid for and stops there.
If you subscribed through the App Store or Google Play, cancel in that store's subscription settings instead, because that is where the payment lives.
Discounts
Promo codes go in at checkout, and a code takes priority over any referral discount sitting on your account.
Referrals stack instead. If a friend signs up with your link, both of you get bonus AI generations, and those sit on top of the monthly allowance rather than resetting with it.
Questions and answers
Yes, and it stays free. A free account covers flashcards, quizzes, summaries, mind maps and spaced repetition, with a monthly allowance of AI generations and unlimited chat with Max. No card is needed to start.
The standard checkout has no separate trial, because the free plan already does that job. Run your own lecture material through it, and subscribe once you know the cards match what your exam asks.
It stays in your account and you carry on studying it, because reviewing is not metered on either plan. What goes is the Premium side: unlimited generating, mock exams, podcasts and Max building material for you.
On the phone apps, yes. Flashcards, quizzes, summaries and mind maps you have already generated open without a connection, and your review progress syncs once you are back online. Generating anything new needs a connection, and podcasts stream rather than download.
Yes, a monthly allowance of episodes, counted separately from the generation allowance. On the free plan podcasts are not available at all.
Your own. Prices are set per country, and the checkout shows the amount in your local currency before you confirm anything.