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Heuristica is an AI study tool that turns whatever you are learning into study materials you can use right away. Add a PDF, paste a YouTube link, drop in a website, or start from a topic, and Heuristica generates flashcards, quizzes, mind maps, concept maps, summaries, and study notes for you. It runs on models like GPT-5.4 and Claude, so you get strong results by clicking buttons instead of writing prompts.

Most AI tools hand you a chat box and a wall of text. Heuristica gives you study-ready formats instead. It works as an AI flashcard generator with spaced repetition, an AI quiz generator, a mind map and concept map maker, a YouTube video summarizer, and a way to chat with your PDFs. You can also convert one format into another, like turning a concept map into flashcards or a video into a quiz, all without any prompting skills.

Heuristica brings a flashcard maker, AI quiz generator, mind map and concept map maker, and AI note taker together in one app. You can generate flashcards with spaced repetition, multiple-choice and short-answer quizzes, mind maps, concept maps, clear summaries, and structured study notes from the material you are studying.

You can start from a PDF, a YouTube video, a website, a document, or just a topic you want to learn. Heuristica reads the source and builds study materials from it, so you can summarize a PDF, pull the key points from a YouTube video, or create a quiz from your lecture notes in a few clicks.

This YouTube walkthrough shows how to use Heuristica and make the most of its features.

Of course! You can change the language of the responses you get by using the language settings menu. If your language is not supported, let me know at hi@heuristi.ca.

A Professional subscription gives you the full toolkit: unlimited flashcards, quizzes, mind maps, concept maps, and study notes, plus access to more capable models like GPT-5.4, Claude Sonnet 4.6, and Gemini 2.5 Pro. You also get editing, custom prompts, and integrations with Semantic Scholar, arXiv, news search, podcasts, and YouTube videos. See the latest features at https://www.heuristi.ca/docs/changelog

You can cancel your subscription at any time. It is not a long-term commitment. You will only be charged for the current month (or the year if it is an annual subscription). To manage your subscription, click the Subscription button in the header or footer. This button is only visible to subscribed users.

Sometimes, you notice that features are still locked even if you purchase a subscription. The most common reason for this problem is that the email address used for purchase differs from the email address registered on the website. You can fix this issue by updating your primary email address on the site by clicking your user avatar and selecting Manage Account.

You can use the Subscription button to manage your subscription and download your invoice. This button is only visible to subscribed users.

You can use the Subscription button to manage your subscription and download your invoice. This button is only visible to subscribed users.

Just send me an email at hi@heuristi.ca to get your account deleted.

Of course! I am working hard to make Heuristi.ca the best tool for learning and research. Feel free to email me at hi@heuristi.ca with your suggestions and feature requests.