A study app that knows what you know.

cookie is a revision app that keeps track of what you know. You add your own notes and it writes full exam-style questions from them and marks your answers the way an examiner would, and you can also study flashcards, do past papers, keep notes, make a revision plan and ask an assistant. Every answer, card and past paper question adds to a score for its topic, and spaced repetition brings each topic back just before you would forget it, so your time goes on what you have not learned yet. The marking is done by AI, so a mark is a guide you can challenge.

Every question you have marked, every flashcard you rate and every past paper question you mark and put under a topic adds to a score for that topic. A flashcard counts half as much as a marked answer, because remembering a card is weaker evidence than answering an exam question. That record decides when each topic comes back and which topic a deck’s next question leans towards, puts your weakest topics first when you study flashcards, gives them more time in your revision plan and is what the assistant reads when you ask it something. A tutor you work with sees the same list, and you can see it yourself on your Progress page.

cookie keeps track of how well you answer each question and brings it back around the time you would start to forget it: sooner if you got it wrong or found it hard, later if you got it right. So you spend more time on what you are still learning and less on what you already know.

Any board or exam your material covers, because cookie writes its questions from the notes or past papers you give it. There are also hundreds of ready-made public decks for GCSE, A-Level, IB, AP, Scottish Highers and many other UK and international boards and entrance exams, and official flashcards and notes for most of the courses we list.

Yes. The "Past papers" page links free past papers, mark schemes and examiner reports straight to the exam boards' own websites, for GCSE, A-level, the Scottish qualifications, IGCSE and university admissions tests. Each course also has its grade boundaries for every year the board publishes them, in our own tables next to the papers, so you can mark a paper and see the grade it would have got. If you want to, you can also do a paper in cookie with a timer, mark it against the mark scheme and keep your score. With an account you can have it marked with AI, and ask the assistant about a question as you go. The marks go into your topic scores, and you can turn the topics you dropped marks on into a question deck. Many courses have a practice deck on cookie too, for when you run out of papers.

Yes. The "Subjects" page lists every subject cookie has anything for, and each subject lists its exams by level and exam board. An exam’s page has its past papers and mark schemes, grade boundaries and specification, and the notes, flashcards and question decks other students have shared for it, all of which you can read without an account, with a way to find a tutor as well. A subject appears there as soon as people start sharing things for it.

Yes. The free plan has a daily and a monthly allowance of credits for the things the AI does, such as writing and marking questions, making flashcards and notes and answering in the chat, so you can use cookie without paying anything, and the Pro plan is there if you want to do more. Studying your flashcards, doing and marking a past paper yourself, writing your own notes and making a revision plan without the AI use no credits.

Generating a question and having it marked each cost a few credits, as do flashcards and notes written by the AI and each answer from the assistant, and your plan gives you a monthly allowance with a daily cap. The allowance itself never changes. What a question costs depends mostly on how much source material it is written from, so a short topic PDF costs the least and a very large deck a little more, which means smaller, focused decks go slightly further. There is no page limit on the free plan, and a full set of past papers costs only a little more per question than a short one.

Yes. You can cancel at any time with the Cancel Pro button on your account page, and you keep Pro until the end of the month or year you have paid for. For 14 days after you subscribe, and again after each yearly renewal and after the first payment that follows a free period, you can instead end Pro straight away and get back the part you have not used. Because Pro gives you its credits at the start, we go by whichever you have used more of, the days or the Pro credits, and the cancel window shows you both before you choose. Credits you bought separately are kept.

Yes. If you already have the question, from a textbook, a worksheet or your tutor, add it to a deck instead of generating one: type it in, or photograph it and cookie reads it in for you. It is marked the same way, with partial credit and a worked solution, and counts towards your mastery, your predicted grade and your review schedule like any question cookie wrote. A photograph is only used to read the question in, and is deleted straight afterwards.

cookie has flashcards as well, written by the AI from your notes or by you, and you can bring your decks from Anki. What a flashcard app cannot do is ask you something new: cookie also writes multi-part exam-style questions from your own material and marks what you actually write, with partial credit, an exam-style score and a worked solution, and both count towards how well it thinks you know each topic.

It marks your answer against a mark scheme it writes alongside the question, giving partial credit the way a real exam does, with a worked solution and feedback on what to improve, and you can ask it to explain where the marks went as a nudge, a step at a time or a full worked answer. The marking is done by AI and AI can be wrong, so you can challenge any mark and a tutor can review it. Treat a cookie score as a guide rather than a promise of your real result.

The exam-style score is your marks out of the total on that question's own mark scheme, so it is the one to compare with a real paper. The quality grade, out of 5, is the AI's broader view of how well you understood the topic, and spaced repetition uses it to decide when the topic comes back, sooner if you struggled and later if you did not. They measure different things, so they will not always agree, and that is expected.

With an account you can open a chat from any page, or press Command K (Ctrl K on Windows) to ask about the page you are on. It knows your level, your exams, your predicted grades, your weakest topics and what is due, so its answers fit you, and it can make flashcards, notes or a question deck or change your plan once you confirm, with an Undo afterwards. Teacher mode, which is on for students unless you turn it off, gives hints and asks you questions before it gives an answer, so you work it out yourself. It is optional, each answer uses credits, and it is AI, so it can be wrong.

Yes. Notes are pages you write in Markdown, in folders, with pictures, sound and video, drawings, and interactive widgets such as a graph with sliders, a step-by-step or a short quiz. You can upload PDFs, Word and PowerPoint files and read them in cookie, have the AI write notes on a topic, and turn a note into flashcards or a question deck. Notes can be shared publicly, and there are official notes for many courses that anyone can read without an account. The free and Pro plans have different storage limits, which the pricing page lists.

Yes. Planning counts back from your exam dates and spreads past papers, flashcards and questions over the days or the times you can study, giving more time to the exam that is sooner and the subjects you find hardest, and it works without an account. Signed in, it can use your grades and weakest topics, plan with AI, put your Cookie Tutoring lessons in and move sessions out of their way, and give you a calendar link for Google, Apple or Outlook that updates when the plan changes.

No. cookie does the parts a computer is good at: writing practice questions, marking them quickly, keeping track of what you know and planning around it. A teacher or tutor can see the same record, set questions, flashcards, past papers and notes from it and spend lessons on what is weak, and teacher mode makes the AI behave more like a teacher, with hints before answers. We also run Cookie Tutoring, where lessons are with a person over video and a shared whiteboard, and cookie was built by a Cambridge Engineering student who uses it to revise.