CustomGPT OS records 18,928,488 monthly visits with +5.9% month-over-month growth and Paid pricing. Knowt records 4,183,953 monthly visits with +5.4% growth and Free pricing.
A Notion-based operating system for building, organizing and monetizing Custom GPTs
Free AI flashcard and study tools for students
| Dimension / Metric | | |
|---|---|---|
| Official Domain | gumroad.com | knowt.com |
| Pricing Model | Paid | Free |
| Monthly Visits | 18.93M (18,928,488) | 4.18M (4,183,953) |
| MoM Traffic Delta | +1.06M (+5.9%) | +214.76K (+5.4%) |
| Primary Market & Share | 🇺🇸 United States (30.9%) | 🇺🇸 United States (69.6%) |
| Direct Visits / mo | 8.17M | 2.74M |
| User Rating | 3.8 | 4.3 |
| Supported Platforms | Website | Website |
A Notion-based operating system for building, organizing and monetizing Custom GPTs
Keeps tutorials, use cases and templates organized so you can reuse your best resources instead of starting from scratch every time.
A dedicated space to generate, capture and revisit Custom GPT ideas so promising concepts never get lost in scattered notes.
A structured build pipeline plus version tracking so you can iterate on a GPT and safely roll back or compare earlier versions.
One central view that lists and manages every active GPT you run, removing the need to hunt through separate tools or bookmarks.
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.
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.
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.
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.
Buy a prompt that already works - or sell the ones you have perfected.
Buy a prompt that already works - or sell the ones you have perfected.
AI study platform transforming notes and videos into quizzes and summaries, but with fewer collaborative features.
AI study platform transforming notes and videos into quizzes and summaries, but with fewer collaborative features.
AI study platform converting course materials into practice questions and flashcards, but with a simpler feature set.
AI study platform converting course materials into practice questions and flashcards, but with a simpler feature set.
SpecialistSpecialized AI quiz and flashcard generator from documents and videos, but lacks robust note-taking features.
SpecialistSpecialized AI quiz and flashcard generator from documents and videos, but lacks robust note-taking features.
