Language Learning • Unhurried
Sloth Lingo
Learn like a sloth—slow and steady, smart and solid.
Massive vocabulary
Learning is fun
Personalized review
Easy start
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Learn effectively
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Steady progress
Everything you need to learn deeply and grow steadily
From words to articles, from challenges to growth—smarter, easier learning.
Vocabulary Library
Learn with context, not just rote memorization
180k+ entries
Roots + examples
Confusables clarified
Smart Article Analysis
Understand hot topics paragraph by paragraph
Grammar & vocab per paragraph
Daily curated topics
Browse by theme
Quizzes & Challenges
Short quizzes that boost memory and rhythm
Memory-boosting mini-quizzes
Practice anytime
Clear score history
Game-like Learning
Earn points and level up as you study
Earn points by practicing
Leaderboards motivate
Level up as you learn
Progress Tracking
Mark, review, and feel your achievement grow
Bookmark key words
Track learning status
Find & review fast
Helpful & Delightful
Clean, intuitive UI that keeps you focused
Clean UI, no ads
Intuitive, low-friction
Customize your sloth avatar
Ready to level up your language journey?
Join Sloth Lingo today—free to start, fun to stick with.
Try it free