# Hjarni for Students Your AI knows the subject in general. It does not know your lectures. Give it your notes. ## Study from your own notes, not from generic background knowledge When your lecture notes and exam questions live in Hjarni, your assistant can quiz you on what your course covered and check your answer against what you wrote. Claude quizzes from a Retention Questions folder already stored in Hjarni. ## The problem You paste the same lecture notes into ChatGPT before every study session. The chat gets long, the answers drift, and next week you paste them again. Worse, the answers lean on the model's general knowledge, not on your course. When the exam follows your lecturer's framing, that gap costs you marks. ## How students use Hjarni Keep one folder per course. Inside it: your lecture notes, the key concepts in your own words, practice problems, and the questions you want to answer on exam day. Connect Hjarni to ChatGPT or Claude once. From then on, any chat can read that folder. You never paste your notes in again. A typical course folder - **Modules**: one note per lecture, with what was covered and what the lecturer stressed - **Key Concepts**: one idea per note, explained in your own words - **Exercises**: practice problems with your worked solutions - **Retention Questions**: the questions you want to answer without looking, each with a short answer - **References**: readings, slides, and recordings worth going back to - **AI instructions**: "Only quiz me from my notes. Tell me which note an answer came from." A Key Concept note is short and written by you: ``` # Opportunity cost Definition in my own words: what you give up by picking one option over the next best one. Why it matters: every choice in the supply unit is framed this way in the exam. An example: studying tonight costs the shift I could have worked. A common misconception: it is not the money spent. ``` A Retention Question is even shorter: ``` # What is the opportunity cost of a free lecture? Answer (short): the next best use of that hour. Source concept: [[Opportunity cost]] Last reviewed: 14 September ``` ## A concrete workflow Sunday, week six of Microeconomics. You open ChatGPT on your phone and type: "Quiz me on the five oldest questions in my Micro retention folder." ChatGPT reads your Retention Questions folder, asks the first one, and checks your answer against the one you wrote. Miss it, and ask it to open the matching Key Concept note and walk you back through your own explanation. Tell it you got one right, and the template asks it to update the Last reviewed date, so the oldest questions come up first next Sunday. Two days before the exam, ask: "Write five practice questions on module 5, using only my notes." It reads your Module 5 note and the concepts linked to it. Ask it to name the note behind each question, so you can check it. New lecture? Add a note, and it is there for the next study session, in ChatGPT and in Claude. ## Start with the Course Notes template The [Course Notes template](https://hjarni.com/templates/course-notes) sets this up for you: the five folders, a starter note in each, and folder instructions that ask the AI to quiz you only from your own material. Paste the template link into Claude or ChatGPT and it builds the structure for you. ## Why not a Project or a flashcard app? ChatGPT Projects and Claude Projects keep files inside one assistant. Your notes then live in that one app, and a classmate on the other assistant cannot read them. Hjarni is one knowledge base that ChatGPT and Claude both read, and you can share a course folder with your study group. Anki is built for spaced repetition and does it well. Hjarni is lighter and keeps each question next to the note that explains it, so the AI can teach you the answer from your own words. You can use both. > An AI that has read your lectures can help you study. One that hasn't is guessing what your exam will ask. ## What students keep in Hjarni - **Lecture notes**: one note per lecture, searchable across every course - **Key concepts**: your own explanations, which the AI is told not to rewrite - **Worked exercises**: problems and the solutions you wrote - **Exam questions**: short questions with short answers, reviewed oldest first - **Reading lists**: sources with a line on why each one matters - **Study group folders**: one shared set of notes every member's AI reads Writing a thesis or a dissertation? That is research work. See [Hjarni for Researchers](https://hjarni.com/use-cases/researchers). ## Skip the blank page Paste a template link into Claude or ChatGPT and it builds the folders, tags, and AI instructions for you, so you start by adding notes instead of setting things up. ### [Course Notes](https://hjarni.com/templates/course-notes) A structure that turns a course into something you actually remember. Modules, key concepts, exercises, retention questions. Claude and ChatGPT quiz you on your real notes, not generic flashcards. ### [Reading List](https://hjarni.com/templates/reading-list) Organize books and articles you want to read, are currently reading, and have finished. Your AI assistant will track progress and collect your notes and highlights. Common questions ## Questions students actually ask **Can ChatGPT quiz me on my own lecture notes?** Yes. Save your notes in Hjarni and connect it to ChatGPT or Claude. Then ask it to quiz you from a course folder. It can read your notes and check your answers against what you wrote, instead of leaning on generic knowledge. **Does it work from my phone?** Yes. You can connect Hjarni from the ChatGPT app on iPhone and Android and study from there. Hjarni also has its own app for iPhone and Android, for reading and editing your notes. **Is Hjarni free for students?** Hjarni is free to start, no credit card required. Free includes 25 personal notes, which is enough to try it on one course. Pro removes the note limit. There is no separate student plan today. **Can I share notes with my study group?** Yes. Put a course folder in a team space and everyone in the group reads the same notes, each through their own ChatGPT or Claude. **Will the AI make up answers?** It can still get things wrong. The Course Notes template tells the AI to quiz only from questions you wrote, never from outside the folder. Add a folder instruction such as "name the note each answer came from" and you can check every answer yourself. Treat it as a study partner, not an answer key.