
Massive library of shared academic notes paired with AI study tools, but less focused on flashcard creation.
Massive library of shared academic notes paired with AI study tools, but less focused on flashcard creation.
DeClassIFY records 0 monthly visits with — month-over-month growth and Freemium pricing. Knowt records 4,183,953 monthly visits with +5.4% growth and Free pricing.

Classify PDF files in seconds so you stop reading paperwork you don't need
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | chromewebstore.google.com | knowt.com |
| Pricing Model | Freemium | Free |
| Monthly Visits | 0 (0) | 4.18M (4,183,953) |
| MoM Traffic Delta | 0 (—) | +214.76K (+5.4%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (69.6%) |
| Direct Visits / mo | 0 | 2.74M |
| User Rating | 4.2 | 4.3 |
| Supported Platforms | Browser Extension | Website |

Classify PDF files in seconds so you stop reading paperwork you don't need
Reads a PDF and assigns it a document category immediately, so you can decide whether it deserves your attention.
Turns a pile of unsorted PDFs into labelled groups you can scan quickly instead of opening file by file.
The extension is only a few hundred kilobytes, so it loads fast and does not slow browsing down.
The developer declares that user data is not collected, sold or used for unrelated purposes.
Free AI flashcard and study tools for students
Upload up to 30 files and Kai instantly produces notes, flashcards, summaries, and practice resources from them.
Convert Quizlet, Kahoot, Wayground, and YouTube content, or record live lectures to generate notes and study sets.
Upload class files to get a study plan and exam prediction that highlights what your professor emphasizes most.
Kai quizzes you by voice and can turn any note or flashcard into a podcast for study on the go.

Massive library of shared academic notes paired with AI study tools, but less focused on flashcard creation.
Massive library of shared academic notes paired with AI study tools, but less focused on flashcard creation.
Gamified AI study application converting notes into flashcards and quizzes, but with a more playful interface.
Gamified AI study application converting notes into flashcards and quizzes, but with a more playful interface.
SpecialistComprehensive student study platform specialized in solving complex homework and exam prediction, but less focused on flashcards.
SpecialistComprehensive student study platform specialized in solving complex homework and exam prediction, but less focused on flashcards.
A free, AI-powered PDF editor for every device

Interactive AI learning platform turning course materials into flashcards and quizzes, but with more video explanations.
Interactive AI learning platform turning course materials into flashcards and quizzes, but with more video explanations.

Cross-platform PDF editing with GPT-powered AI for reading, translating, and signing documents
Chat with any PDF, video, or website and get cited answers in seconds
Converts notes and PDFs into interactive flashcards and audio podcasts, but less established brand presence.
Converts notes and PDFs into interactive flashcards and audio podcasts, but less established brand presence.
Highlight the web, learn in public, and build your AI clone
Highlight the web, learn in public, and build your AI clone
University learning platform combining shared notes with AI flashcard generation, but heavier community focus.
University learning platform combining shared notes with AI flashcard generation, but heavier community focus.

Personalized AI study assistant creating flashcards and mind maps from lecture recordings, but smaller user community.
Personalized AI study assistant creating flashcards and mind maps from lecture recordings, but smaller user community.

AI learning assistant converting lectures and documents into study guides and flashcards, but less free-tier friendly.
AI learning assistant converting lectures and documents into study guides and flashcards, but less free-tier friendly.