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
Browser extension that adds dual subtitles and click-to-lookup to Netflix and YouTube for learning languages.
AI language coach offering conversational practice with real-time feedback across 130+ languages.
Social tracker for language immersion that logs study time and media while surfacing level-appropriate content.
Interactive learning app with an AI tutor for math, coding, science and data-visual, adaptive lessons for all ages.
AI math solver and tutor that adds animated video explanations for homework across math, physics and chemistry, for students.
No public pricing
No public pricing
Free trial available
No public pricing
No public pricing
- ✦Dual subtitles on Netflix and YouTube
- ✦Click-to-lookup word translations
- ✦Saveable vocabulary items
- ✦Playback controls for language study
- ✦Works as a browser extension
- ✦Conversational practice with AI tutors
- ✦Real-time personalized feedback and corrections
- ✦Dialogue, sentence, word, call, photo, and debate modes
- ✦Voice interaction with natural AI voices
- ✦Grammar courses and language certificates
- ✦130+ languages on web, iOS, and Android
- ✦One-click activity and media logging
- ✦Crowdsourced, difficulty-rated content database
- ✦Progress dashboards and visualizations
- ✦Community leaderboards and reading challenges
- ✦AI-assisted logging and GPT integration
- ✦Personal AI tutor (Koji)
- ✦Visual, interactive lessons
- ✦Adaptive practice based on mastery
- ✦Courses in math, CS, science and data
- ✦Gamified streaks, levels and daily goals
- ✦iOS and Android apps
- ✦Step-by-step problem solutions
- ✦AI-generated animated video explanations
- ✦Interactive practice quizzes and tests
- ✦Coverage of math, physics, chemistry and accounting
- ✦Graphs and diagrams for complex problems
- ✦Mobile app
- →Learn a language while watching shows
- →Look up and save new words from video
- →Study with dual subtitles
- →Self-learners practicing conversational fluency
- →Business teams training employees in new languages
- →Students supplementing classroom language education
- →Tracking immersion hours and media consumed
- →Finding level-appropriate foreign content
- →Connecting and competing with other learners
- →Learning math and coding by doing
- →Getting adaptive tutoring outside class
- →Building STEM intuition
- →Daily skill practice
- →Getting homework solved step by step
- →Watching video explanations of solutions
- →Practicing with generated quizzes
- →Preparing for exams