Compare tools
Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.
⇄ Comparison dimension — pick the market you're actually shopping in
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Knowt
✓ verifiedFreemium
Free Quizlet alternative with AI study tools: flashcards, lecture recording, and PDF/video summaries for students and schools.
5.3M visits/mo
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Lilys AI
✓ verifiedFreemium
AI assistant that condenses YouTube videos, audio, PDFs, articles and websites into summaries and structured insights.
1.4M visits/mo
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Letterly
✓ verifiedFreemium
Speech-to-text mobile app that turns dictation into clean messages, notes, emails, and transcripts in 90+ languages.
347K visits/mo
Pricing
School/district license: from $2.75/student
No public pricing
No public pricing
Core features
- ✦AI lecture recorder that produces notes and flashcards
- ✦Flashcards with unlimited learn mode
- ✦AI PDF and YouTube summarizers
- ✦Voice tutoring and podcast generation
- ✦Notes-to-active-recall study guides
- ✦School and district licensing with privacy agreements
- ✦Summaries of video and audio content
- ✦PDF and document summarization
- ✦Article and website distillation
- ✦Structured notes and insight extraction
- ✦Save-and-subscribe knowledge base
- ✦Voice dictation converted to clean, formatted text
- ✦Works inside other apps (Gmail, Slack, Notion)
- ✦Meeting/lecture transcription with speaker separation and summaries
- ✦Support for 90+ languages with automatic detection
- ✦Long recordings up to 90 minutes
- ✦Cross-device sync and privacy (not used to train AI)
Use cases
- →Studying for tests and exams
- →Turning lecture recordings into study material
- →Summarizing long readings and videos
- →Schools consolidating multiple study tools
- →Quickly review long videos or lectures
- →Extract key points from PDFs and reports
- →Build a personal knowledge library
- →Research topics faster
- →Dictate messages and emails instead of typing
- →Capture notes, journals, and ideas by voice
- →Transcribe and summarize meetings, lectures, and interviews
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