
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. Lock-in records 902 monthly visits with -80.1% growth and Free pricing.

Your AI focus coach for macOS
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | knowt.com | lock-in.ai |
| Pricing Model | Free | Free |
| Monthly Visits | 4.18M (4,183,953) | 902 (902) |
| MoM Traffic Delta | +214.76K (+5.4%) |
| -3.63K (-80.1%) |
| Primary Market & Share | 🇺🇸 United States (69.6%) | 🌐 Global (—) |
|---|
| Direct Visits / mo | 2.74M | 350 |
|---|
| User Rating | 4.3 | 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.

Your AI focus coach for macOS
Lock-in tracks real work signals such as tab switches and idle stalls, then nudges you before a three-second glance turns into a thirty-minute detour.
When your focus dips, the app proposes a quick reset — a water break or a sixty-second stretch — drawn from attention research rather than generic timers.
Every session closes with a clear report covering your focus score, the distractions you hit and how long it took you to recover.
The app is built for macOS and runs as a lightweight companion rather than a browser-blocking hammer.

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.

Free / Open-sourceOpen-source personal AI assistant that runs on your own machine and works from chat apps


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.
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.

An extendable launcher that puts your tools, AI, and automations one keystroke away
A polished space for notes, tasks, and documents that follows you across every device.

AI learning assistant converting lectures and documents into study guides and flashcards, but less free-tier friendly.
AI study platform transforming notes and videos into quizzes and summaries, but with fewer collaborative features.
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.
Free / Open-sourceOpen-source personal AI assistant that runs on your own machine and works from chat apps
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.
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.
An extendable launcher that puts your tools, AI, and automations one keystroke away
A polished space for notes, tasks, and documents that follows you across every device.
AI learning assistant converting lectures and documents into study guides and flashcards, but less free-tier friendly.
AI study platform transforming notes and videos into quizzes and summaries, but with fewer collaborative features.