Relingo

Relingo doesn't make you study flashcards—it teaches you vocabulary while you browse the web. Install the browser extension, and it automatically detects unfamiliar words on any page, showing their translation and usage in real time.

What it does

Relingo uses spaced repetition and contextual learning to help you absorb new words naturally. It highlights unknown terms in articles, news, or social media, and lets you save them for later review. The algorithm adapts to your level, prioritizing words you're most likely to forget.

Best for

• Language learners who want to practice without dedicated study time
• Intermediate readers looking to expand vocabulary through real-world content
• Polyglots managing multiple languages simultaneously

Strengths

• Works on any website without manual input—just browse normally
• Spaced repetition system optimizes retention based on your reading habits
• Supports multiple languages including English, Spanish, French, and more

• Contextual Translation — Hover over any word to see its meaning and usage in the current sentence
• Spaced Repetition — Automatically schedules reviews for saved words based on forgetting curve
• Browser Extension — Works with Chrome, Firefox, and Edge across all websites
• Progress Tracking — Dashboard shows words learned, time spent, and retention rate
• Custom Word Lists — Organize saved vocabulary by topic, difficulty, or language
• Reading Mode — Adjusts text display to highlight unfamiliar words without breaking flow