Study guides
Bring the key ideas into a structured review.
Explore study guidesA place for the way you learn
StudySim is an AI study tool that turns your notes, PDFs and slides into flashcards, quizzes and practice tests. Watch an explanation unfold, test what you remember, or work through a draft. Keep the work that helps.
Free to try.

Visual tutor
Turn a question or your notes into a narrated visual explanation. Pause a drawing, ask about part of it, revisit a section, and try the lesson’s checkpoint.
Want a different voice for the explanation? Gossip style turns the topic into a lively study analogy while keeping the lesson grounded in your material.

Study Simulator
A guide to find the shape of a topic. Flashcards to retrieve the details. A quiz to see what needs another pass. A podcast when you want to listen.

Bring the key ideas into a structured review.
Explore study guidesPractice retrieving one idea at a time.
Explore flashcardsCheck an answer, then understand the explanation.
Explore quizzesHear a narrated review of your material.
Explore study podcastsQuick tools work on their own. Sign in to save your work, and go Pro to build study sets from a whole course.
Open Study Simulator
Writing & research
Revise a passage, check grammar, plan an essay, find a citation, or look up scholarly sources. Check for AI writing and plagiarism, with clear notes on what each check can and can't tell you.
Detector scores and web matches are signals to review, not proof of authorship or copying.
Exam prep
Try original sample questions for the available entrance, healthcare, and AP tests, with answer explanations. Make a separate quiz from your own material when you want focused practice.
Free practice tests for 10 exams, including the TEAS, MCAT, NCLEX and AP courses. Original questions, not official exam items.

Study, writing, source research, word counting, and everyday calculations. Go straight to the task you need.
A quick tool when you need it. An account when you want to keep it. Pro for your course workflow.
Yes. You can try the AI tools free without signing up. The word counter and calculators are always free. Sign in when you want to save your work.
It is the home for your study tools and saved courses. Use a quick tool on its own, or open a course to return to its sources, study guides, flashcards, quizzes, podcasts, and saved visual lessons.
Pro turns everything saved in a course into study guides, flashcards, quizzes and podcasts. See Pricing for plans.
Yes. All your courses and saved work are still here. Open Study Simulator to find them, or select "Where are my tools?" in the sidebar for a quick tour.
Review AI explanations against your sources, especially before an exam or submission. Writing detectors can be wrong, and a web similarity scan cannot establish copying or misconduct. Each tool explains the scope of its output.
A problem, a paragraph, a page of notes. Bring it to StudySim and choose your next step.