
Massive library of shared academic notes paired with AI study tools, but less focused on flashcard creation.
Knowt records 4,183,953 monthly visits with +5.4% month-over-month growth and Free pricing. OETStudy records 4,738 monthly visits with +264.2% growth and Free pricing.

AI-powered practice and scoring for the Duolingo English Test
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | knowt.com | oetstudy.com |
| Pricing Model | Free | Free |
| Monthly Visits | 4.18M (4,183,953) | 4.74K (4,738) |
| MoM Traffic Delta | +214.76K (+5.4%) |
| +3.44K (+264.2%) |
| Primary Market & Share | 🇺🇸 United States (69.6%) | 🇺🇸 United States (100%) |
|---|
| Direct Visits / mo | 2.74M | 1.54K |
|---|
| User Rating | 4.3 | 4.4 |
|---|
| Supported Platforms | Website | Website |
|---|
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.

AI-powered practice and scoring for the Duolingo English Test
A large bank of DET-style items spanning speaking, writing, listening, and reading, graded by difficulty so you can practise at the level you need.
Speaking and writing submissions are scored automatically, evaluating pronunciation, fluency, grammar, and content structure with suggestions for improvement.
Check your vocabulary level against CEFR bands and build word lists clustered around the question types you practise most.
Practice statistics and score analysis highlight weak areas and show how your performance changes over time.

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.
SpecialistComprehensive student study platform specialized in solving complex homework and exam prediction, but less focused on flashcards.
Practise PTE Academic and PTE Core free, with AI scoring for speaking and writing

Interactive AI learning platform turning course materials into flashcards and quizzes, but with more video explanations.
Study smarter for IELTS, TOEIC and HSK with AI speaking and writing rooms
Converts notes and PDFs into interactive flashcards and audio podcasts, but less established brand presence.
AI English speaking coach with instant pronunciation feedback

PTE practice tests with instant AI scoring and realistic mock exams
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.

AI learning assistant converting lectures and documents into study guides and flashcards, but less free-tier friendly.
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.
SpecialistComprehensive student study platform specialized in solving complex homework and exam prediction, but less focused on flashcards.
Practise PTE Academic and PTE Core free, with AI scoring for speaking and writing
Interactive AI learning platform turning course materials into flashcards and quizzes, but with more video explanations.
Study smarter for IELTS, TOEIC and HSK with AI speaking and writing rooms
Converts notes and PDFs into interactive flashcards and audio podcasts, but less established brand presence.
PTE practice tests with instant AI scoring and realistic mock exams
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.
AI learning assistant converting lectures and documents into study guides and flashcards, but less free-tier friendly.