Knowt is a free, friendly Quizlet alternative with flashcards, practice tests, and AI study tools. StudyPDF is built around your whole course: cited answers, one connected concept map, real graded exams, and tracked progress.
| Feature | StudyPDF | Knowt |
|---|---|---|
| Trust and grounding | ||
| Answers cited to the page | YesEvery answer shows the page | NoAI notes and flashcards, no page cites documented |
| Says when it isn't in your material | YesRefuses to guess | PartlyGeneral AI assistant |
| Your whole course | ||
| One connected map across all files | YesTopics + concepts merged across lectures | NoWorks set by set |
| Tracks what you're weak on | YesPer-concept mastery, what to study next | PartlyPer-set progress and per-exam stats |
| Study tools | ||
| Full graded practice exams | YesSections, timer, pass mark, report | PartlyPractice tests, plus AP, SAT and ACT mock exams |
| Quiz with instant feedback | YesAfter every question | YesLearn and test modes |
| Flashcards | YesRate, fold-over PDF, Anki on Pro and up | YesWith spaced repetition |
| Mind maps and cheat sheets | YesBoth, built from your course | NoNotes and study guides |
| Export flashcards to Anki | YesDownload an .apkg file on Pro and up | NoPDF export, no Anki option listed |
| Inputs, extras and pricing | ||
| Imports YouTube videos | YesPaste a video link | YesVideos, PDFs, slides, audio |
| Imports existing Quizlet sets | NoUpload your own files | YesOne-click Quizlet import |
| Free tier | YesFree to start, about 4 materials a week | PartlyFree Basic plan, paid Ultra |
| Pricing, as of October 2026 | ||
| Free plan | YesFree account, no credit card, no time limit | YesBasic plan is free |
| Paid plans | YesPro about 35 a week, Ultra more | YesUltra: $24.99 a month or $149.99 a year |
Yes. Knowt's Basic plan is free, and its site says flashcards and the learn mode are not locked behind a paywall. The paid plan is Ultra, which adds ad-free studying and extra AI tools such as summaries of PDFs, videos and PowerPoints (1 a month on Basic, unlimited on Ultra). StudyPDF is free to start too: a free account, no credit card and no time limit, with about 4 materials a week.
As of October 2026, Knowt Basic is free and Ultra is $24.99 a month or $149.99 billed yearly, with a 3-day trial listed on the yearly plan. Prices change, so confirm on Knowt's plans page. StudyPDF's Free plan costs nothing. Pro and Ultra add a bigger weekly pool of materials.
Yes, if you want a tool built around your whole course, with answers cited to the page, full graded exams, exports to Anki (Pro and up) and PDF, and progress tracking. Knowt is a strong free Quizlet alternative for flashcards and practice tests, while StudyPDF goes deeper on your own course material.
It cites the page behind every answer and refuses to make things up, maps your whole course into one connected concept graph, writes full graded practice exams with a report, exports flashcards to Anki (Pro and up) and fold-over PDFs, builds mind maps and cheat sheets, and tracks per-concept mastery so it knows what to study next.
Knowt imports your existing Quizlet sets in one click and gives you a large public library of community notes and flashcards to browse. StudyPDF studies the course files you upload plus YouTube links.
It is free to start, and Free gives you about 4 materials a week. Pro and Ultra add a bigger weekly pool of credits for heavier exam-season use. You only upgrade when you outgrow the free plan.
Upload your course and ask Bo anything. No card required.
