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Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.
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Semantic Scholar
✓ verifiedFree
Free AI-powered academic search engine indexing 236M+ papers, for researchers wanting semantic literature discovery and an augmented reader.
7.9M visits/mo13K saves
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Algor Education
✓ verifiedFreemium
Algor Education turns notes, docs, and media into AI-generated concept maps, flashcards, quizzes, and study notes.
1.7M visits/mo
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gizmo.ai
✓ verifiedFreemium
AI study app that turns notes, PDFs, YouTube and slides into quizzes and flashcards to help students revise.
5.4M visits/mo10K saves
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PTE APEUni
✓ verifiedFreemium
AI-scored practice platform for PTE Academic and PTE Core exam prep, with question banks, predictions and study tools.
2.1M visits/mo
Pricing
No public pricing
Free: €0 (concept maps, up to 15k characters)
Beginner: €2.99/mo
Base: €5.49/mo
Pro: €7.99/mo
Free trial available
No public pricing
No public pricing
Core features
- ✦AI-powered semantic search across 236M+ papers
- ✦Semantic Reader for augmented, contextual paper reading
- ✦Free public API for paper search and metadata
- ✦Author and topic discovery
- ✦Citation graph exploration
- ✦Beta program for new features
- ✦AI concept and mind maps
- ✦AI flashcards and quizzes
- ✦AI study notes/summaries
- ✦Transcriptions from audio/video
- ✦Prebuilt and custom templates
- ✦Multi-language support
- ✦AI-generated quizzes
- ✦Flashcard maker
- ✦Create flashcards from PDFs, notes and slides
- ✦YouTube and PowerPoint summarizers
- ✦Spaced-repetition study
- ✦Mobile app
- ✦AI scoring for speaking and writing
- ✦Full PTE question-type practice
- ✦Weekly exam prediction files
- ✦Vocabulary books and shadowing tools
- ✦AI study plan and score analysis
- ✦Web and mobile app sync
Use cases
- →Researchers searching scientific literature across disciplines
- →Developers building applications on top of scholarly data via the API
- →Students exploring citation networks for a topic
- →Librarians and academics needing free literature discovery tools
- →Turning notes into visual study aids
- →Creating teaching materials
- →Exam revision and self-study
- →Revise for school and university exams
- →Turn notes and PDFs into flashcards
- →Study with AI-generated quizzes
- →Preparing for PTE Academic/Core exams
- →Practicing speaking and writing with AI feedback
- →Studying likely exam questions
- →Tracking prep progress
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