Learning a language is mostly a vocabulary problem. Grammar matters, but you can't use grammar you don't have words for.
Most language learners stall not because the grammar got too hard, but because their vocabulary never grew large enough. Flashcards with spaced repetition are the fastest known method for fixing that.
Free to start. No credit card required.
Every time you successfully retrieve a word from memory, the neural pathway for that word gets stronger. Spaced repetition automates the timing of those retrievals, showing you a word again right before you'd forget it. Over weeks and months, this builds a vocabulary that stays with you instead of evaporating after each session.
The algorithm tracks every card and shows it again right before you would forget it. No manual planning required.
Every review session is a test, not a reading. Pulling information from memory is what builds lasting retention.
Space Repeat is completely free. No paid tier, no feature walls, no subscription required to access spaced repetition.
Yes, completely free. The free plan gives you a generous allowance (up to 50 decks, 100 cards each) for building vocabulary decks in any language, with image support and full spaced repetition scheduling, at no cost.
Yes. Space Repeat supports image cards, which is particularly effective for vocabulary learning. Pairing a word with a photo of the object builds stronger memory associations than a text-only translation.
Around 1,000 to 2,000 high-frequency words covers most everyday conversations. For reading newspapers and following native speech comfortably, you're looking at 5,000 to 10,000 words. With 20 minutes of daily review, most learners add 10 to 20 new words per day.
The Best Flashcard App for Language Learning
Learning a language is a vocabulary problem. Flashcards fix this faster than almost any other method. Here are the best flashcard apps for language learning.
Active Recall: The Most Effective Study Technique (Backed by Science)
Most students study by re-reading their notes. Research consistently shows this is one of the least effective methods available. Active recall works differently, and the results are dramatically better.
Space Repeat vs Memrise
Memrise focuses almost entirely on language learning, using short video clips of native speakers alongside spaced repetition to build vocabulary. Space Repeat takes a general-purpose approach: any subject, any content, with a clean interface and fully free access. Here's how they compare for learners deciding between the two.
Spanish Vocabulary Flashcard App
Build Spanish vocabulary fast with spaced repetition flashcards. Free app to memorise Spanish words, phrases, and grammar that you actually remember long term.
Japanese Flashcard App
Learn Japanese faster with spaced repetition flashcards. Memorise kanji, vocabulary, and grammar patterns with a free app that tracks your progress automatically.
Create your first deck in minutes. Free to start, nothing to install, no credit card required.
Start building vocabulary