# DeClassIFY vs Knowt 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. | Metric | [DeClassIFY](https://openaitools.app/tool/declassify) | [Knowt](https://openaitools.app/tool/knowt-com) | | :--- | :--- | :--- | | Website URL | https://chromewebstore.google.com/detail/declassify/lpjbjbclcjofeofjjjpgkciiklidkkkc | https://knowt.com/ | | Categories | AI PDF Summarizer, AI Text Classifier, AI Article Summarizer, AI PDF | AI Flashcard Maker, AI Notes Generator, AI Summarizer, AI Note Taker | | Pricing Model | Freemium | Free | | Monthly Visits | 0 | 4,183,953 | | MoM Growth Rate | — | +5.4% | | Primary Market | Global | United States | | Direct Visits | 0 | 2,741,505 | | Review Score | 4.2 | 4.3 | | Saved Count | 0 | 14 | | Supported Platforms | Browser Extension | Website | ## DeClassIFY DeClassIFY installs as a browser extension and works on the PDFs you already download every day. Instead of opening each file to find out what it is, the extension reads the document and assigns it a category, turning a folder of mixed downloads into something you can triage at a glance. The pitch is simple: stop burning hours on files that were never useful to you. The extension is intentionally narrow in scope. It does not try to be a full document manager, an editor or a cloud drive — it does one job, classification, and keeps the footprint small (under half a megabyte) so it stays out of the way of normal browsing. The listing states that the developer does not collect or sell user data. Because it is distributed through the Chrome Web Store, installing and removing it takes a single click, and updates arrive automatically. It will suit researchers, students, analysts and office workers who collect large numbers of PDFs and need a fast first-pass filter. **Pricing & Plans:** Free to install from the Chrome Web Store. The listing does not advertise a paid tier; any premium features, if they exist, are not described on the store page. - **One-second PDF classification:** Reads a PDF and assigns it a document category immediately, so you can decide whether it deserves your attention. - **Triage for mixed download folders:** Turns a pile of unsorted PDFs into labelled groups you can scan quickly instead of opening file by file. - **Tiny footprint:** The extension is only a few hundred kilobytes, so it loads fast and does not slow browsing down. - **Privacy-conscious design:** The developer declares that user data is not collected, sold or used for unrelated purposes. - **One-click install and updates:** Installs straight from the Chrome Web Store and updates automatically, with no separate account required. **Strengths:** Very fast classification that removes the manual step of opening every PDF; Small, unobtrusive extension that does not slow the browser down; Free to install and distributed through the official Chrome Web Store; Explicit statement that user data is not collected or sold **Limitations:** Small user base at the time of writing, so community reviews are limited; Only classifies PDFs — it is not a reader, editor or file manager; No public pricing page describing premium tiers or higher limits [Profile (Markdown)](https://openaitools.app/tool/declassify.md) ## Knowt Knowt is a study platform built around flashcards and AI study tools, and it markets itself as the leading free Quizlet alternative. Its pitch is consolidation: rather than juggling several apps, students upload their class materials once and get flashcards, notes, summaries, and practice tests generated in one place. Importing existing Quizlet sets takes a couple of clicks, including images and formatting. The AI layer is powered by Kai, an assistant that works across PDFs, slides, images, videos, and live lecture recordings. Uploading files produces notes, flashcards, and quizzes automatically, and Kai can also answer questions about your materials and explain why a practice answer was wrong. An Exam Predictor and Planner builds a study schedule from uploaded course files, while Voice Tutoring & Podcasts let students be quizzed aloud or turn notes into audio for studying on the go. Knowt is free to use for core studying, with unlimited learn mode and free practice tests. It is widely adopted in education, with millions of students and teachers using it and a strong presence in AP exam preparation, alongside SAT and ACT resources and a Chrome extension for on-screen study. **Pricing & Plans:** Knowt's core features are free: unlimited learn mode, free practice tests, flashcard creation, imports, and AI study tools with reasonable usage limits. Optional paid upgrades (Plus/Unlimited-style tiers) unlock higher AI generation limits and premium features. No credit card is required to start studying. - **AI PDF Summarizer and Flashcards:** Upload up to 30 files and Kai instantly produces notes, flashcards, summaries, and practice resources from them. - **Import and Lecture Recording:** Convert Quizlet, Kahoot, Wayground, and YouTube content, or record live lectures to generate notes and study sets. - **Exam Predictor and Planner:** Upload class files to get a study plan and exam prediction that highlights what your professor emphasizes most. - **Voice Tutoring and Podcasts:** Kai quizzes you by voice and can turn any note or flashcard into a podcast for study on the go. - **Study Modes and Exam Prep:** Free learn mode, matching games, spaced repetition, and practice test rooms cover AP, ACT, and SAT prep. **Strengths:** Free core with unlimited learn mode and practice tests; One-click Quizlet import preserves formatting and images; AI turns PDFs, slides, and lectures into study materials; Strong AP, SAT, and ACT prep resources plus a Chrome extension **Limitations:** Some AI generation limits encourage upgrading to paid plans; Advanced study plans rely on accurate file uploads; Best experience requires creating an account to save materials [Profile (Markdown)](https://openaitools.app/tool/knowt-com.md) ## Frequently Asked Questions ### How do DeClassIFY and Knowt compare in monthly traffic? DeClassIFY has 0 monthly visits, while Knowt has 4,183,953. Traffic estimates describe audience size, not product quality. ### How do their growth rates compare? DeClassIFY has a month-over-month growth rate of —; Knowt has +5.4%. ### How does pricing compare? DeClassIFY: Freemium. Free to install from the Chrome Web Store. The listing does not advertise a paid tier; any premium features, if they exist, are not described on the store page. Knowt: Free. Knowt's core features are free: unlimited learn mode, free practice tests, flashcard creation, imports, and AI study tools with reasonable usage limits. Optional paid upgrades (Plus/Unlimited-style tiers) unlock higher AI generation limits and premium features. No credit card is required to start studying. ## Alternatives | # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 1 | [Studocu](https://openaitools.app/tool/studocu-global) | 39,297,122 | +1.1% | Freemium | Massive library of shared academic notes paired with AI study tools, but less focused on flashcard creation. | [.md](https://openaitools.app/tool/studocu-global.md) | | 2 | [Gizmo](https://openaitools.app/tool/gizmo-ai) | 9,273,984 | +18.2% | Freemium | Gamified AI study application converting notes into flashcards and quizzes, but with a more playful interface. | [.md](https://openaitools.app/tool/gizmo-ai.md) | | 3 | [Solvely AI](https://openaitools.app/tool/solvely-ai) | 4,526,289 | +134% | Freemium | Comprehensive student study platform specialized in solving complex homework and exam prediction, but less focused on flashcards. | [.md](https://openaitools.app/tool/solvely-ai.md) | | 4 | [PDFgear](https://openaitools.app/tool/pdfgear) | 2,845,280 | -3.4% | Free | A free, AI-powered PDF editor for every device | [.md](https://openaitools.app/tool/pdfgear.md) | | 5 | [StudyFetch](https://openaitools.app/tool/study-fetch) | 1,750,520 | +1.7% | Freemium | Interactive AI learning platform turning course materials into flashcards and quizzes, but with more video explanations. | [.md](https://openaitools.app/tool/study-fetch.md) | | 6 | [UPDF AI](https://openaitools.app/tool/updf-ai) | 1,050,387 | -7.2% | Freemium, Free Trial, Paid | Cross-platform PDF editing with GPT-powered AI for reading, translating, and signing documents | [.md](https://openaitools.app/tool/updf-ai.md) | | 7 | [ChatPDF](https://openaitools.app/tool/chatpdf) | 1,044,477 | -3.7% | Freemium | Chat with any PDF, video, or website and get cited answers in seconds | [.md](https://openaitools.app/tool/chatpdf.md) | | 8 | [Studley AI](https://openaitools.app/tool/studley-ai) | 1,031,545 | -19.5% | Freemium | Converts notes and PDFs into interactive flashcards and audio podcasts, but less established brand presence. | [.md](https://openaitools.app/tool/studley-ai.md) | | 9 | [Glasp](https://openaitools.app/tool/glasp) | 889,564 | -14.1% | Freemium | Highlight the web, learn in public, and build your AI clone | [.md](https://openaitools.app/tool/glasp.md) | | 10 | [Studydrive](https://openaitools.app/tool/studydrive) | 864,081 | -29.1% | Freemium | University learning platform combining shared notes with AI flashcard generation, but heavier community focus. | [.md](https://openaitools.app/tool/studydrive.md) | --- Source: https://openaitools.app/compare/declassify-vs-knowt-com More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)