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Words on Repeat

Turn anything you read or watch into vocabulary you'll remember. Paste a URL, upload a PDF, or import YouTube subtitles. AI extracts flashcards in seconds. Free to start, powered by FSRS spaced repetition. Free, no ads, works offline as a PWA.

Words on Repeat is a vocabulary learning app powered by FSRS spaced repetition. Paste a URL, upload a PDF, or import YouTube subtitles โ€” AI extracts flashcards with translations, example sentences, and grammar notes in seconds. Browse 185+ free public decks in 12 languages (Spanish, French, German, Italian, Japanese, Korean, and more), organized by CEFR level (A1โ€“C2). Features quiz games, progress analytics, daily study goals, and push notification reminders. Free, no ads, works offline as a PWA.

A startup from Switzerland.

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Words on Repeat

Words on Repeat Reviews and Details

This page is designed to help you find out whether Words on Repeat is good and if it is the right choice for you.

#Language Learning #Flash Cards #Spaced Repetition #Education #Studying #Online Learning #AI #Learning Tools #Vocabulary Builder #Education Technology #AI Study Tools

Screenshots and images

  • Words on Repeat Main Page
    Main Page //
    2026-06-21
  • Words on Repeat Study Mode - Word Rating
    Study Mode - Word Rating //
    2026-06-21
  • Words on Repeat Public Decks
    Public Decks //
    2026-06-21
  • Words on Repeat User Dashboard
    User Dashboard //
    2026-06-21
  • Words on Repeat Progress of a Learning Deck
    Progress of a Learning Deck //
    2026-06-21
  • Words on Repeat Study Interface
    Study Interface //
    2026-06-21
  • Words on Repeat Quiz Modes (7 types)
    Quiz Modes (7 types) //
    2026-06-21
  • Words on Repeat AI URL Words Extraction - initial screen
    AI URL Words Extraction - initial screen //
    2026-06-21
  • Words on Repeat AI URL Words Extraction - summary screen
    AI URL Words Extraction - summary screen //
    2026-06-21
  • Words on Repeat Decks Vocabulary Overview
    Decks Vocabulary Overview //
    2026-06-21

Features & Specs

  1. Spaced Repetition (FSRS)

    Adaptive scheduling algorithm that optimizes review timing based on your memory patterns โ€” more effective than SM-2 or Leitner systems

  2. AI Content Extraction

    Paste a URL, upload a PDF, or drop in text โ€” AI extracts vocabulary with translations and example sentences automatically

  3. 200+ Curated Decks

    Official decks across 11 languages and all CEFR levels (A1โ€“C2), each with example sentences, translations, and grammar notes

  4. AI Vocabulary Extraction

    Extract vocabulary from pasted text, uploaded images (OCR), or website URLs using AI

  5. Custom Decks

    Create, organize, and manage multiple vocabulary decks per language

  6. Progress Tracking and Analytics

    Detailed statistics with daily, weekly, and monthly study charts and streak tracking

  7. Daily Study Goals

    Set per-deck daily review targets to build consistent study habits

  8. Deck Marketplace

    Browse and clone free community-shared vocabulary decks

  9. Quizlet Import

    Migrate existing flashcard sets from Quizlet via TSV/CSV import

  10. Push Notifications

    Daily review reminders delivered via browser push notifications

  11. Dark Mode

    Full light/dark theme toggle with system preference detection

  12. Deck Sharing

    Share decks read-only with other users via invite

  13. Mobile Responsive

    Fully responsive design optimized for phone, tablet, and desktop

  14. Blog & Learning Resources

    Built-in blog with language learning tips, guides, and strategy articles

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Questions & Answers

As answered by people managing Words on Repeat.

  1. Which are the primary technologies used for building Words on Repeat?

    Which are the primary technologies used for building Words on Repeat?

    • Backend: TypeScript, Express.js, DB - fast, lightweight, no heavy infrastructure
    • Frontend: Vanilla JavaScript - no framework, no bundler, which keeps page loads instant
    • Spaced repetition: ts-fsrs library - the same FSRS algorithm powering Anki's latest scheduler
    • AI extraction: OpenAI API for content parsing, translation, and grammar note generation
    • Offline support: Progressive Web App with service worker caching
    • Hosting: AWS

  2. Who are some of the biggest customers of Words on Repeat?

    • Language learners studying Spanish, French, German, Italian, Portuguese, Japanese, Korean, and Chinese
    • Students preparing for CEFR language exams from beginner (A1) to mastery (C2)
    • Quizlet switchers looking for a free alternative with real spaced repetition
    • Self-taught learners who build vocabulary from YouTube channels, news articles, podcasts, and PDF textbooks
    • Expats and professionals learning a new language for work or relocation
    • Language teachers who use the public deck library and deck sharing features with their students

  3. What's the story behind Words on Repeat?

    I spent two years building SuperMemo collections, then switched to Anki, then tried Quizlet when I wanted something simpler. When Quizlet locked study modes behind a $36/year paywall, I decided to build what I actually wanted:

    • Modern spaced repetition with a clean interface
    • No paywall on the core study tools
    • The ability to extract vocabulary directly from articles and YouTube videos I was already consuming

    Words on Repeat started as a personal tool for my own Spanish studies. I kept thinking "I wish I could just paste this article and get a deck" - so I built exactly that.

    It grew from a single Spanish deck into a platform with 185+ curated decks across 12 languages, 7 quiz modes, AI-powered extraction from any content source, and a community of learners studying everything from French A1 basics to Japanese C1 business vocabulary.

  4. How would you describe the primary audience of Words on Repeat?

    Language learners who want to build vocabulary from real content โ€” articles, YouTube videos, podcasts, textbooks - rather than drilling disconnected word lists.

    Our typical users:

    • Intermediate learners (B1โ€“B2) who've outgrown Duolingo but find Anki too complex and Quizlet too limited
    • Quizlet refugees who hit the paywall and want a free alternative with better study tools
    • Anki users who want a modern interface without sacrificing algorithm quality
    • Self-taught learners who study from YouTube, news articles, and PDF textbooks

    Supports 12 languages: Spanish, French, German, Italian, Portuguese, Japanese, Korean, Chinese, Dutch, Polish, English, and Swiss German - with decks organized from beginner (A1) to mastery (C2).

  5. Why should a person choose Words on Repeat over its competitors?

    You get the most complete free tier of any flashcard app:

    • FSRS spaced repetition - the same algorithm Anki uses, scheduling reviews right before you'd forget
    • 7 quiz modes - flashcards, multiple choice, typing, listening, matching, true/false, speed review
    • 185+ curated decks across 12 languages with grammar notes on every card
    • Progress analytics, daily study goals, push notification reminders, and dark mode
    • No ads, no paywall - everything works out of the box

    How competitors compare:

    • Quizlet charges $36/year and still doesn't offer true spaced repetition
    • Anki is free but requires hours of setup, add-on hunting, and template configuration to get a comparable experience
    • Words on Repeat gives you all of that in under 30 seconds, with zero configuration

  6. What makes Words on Repeat unique?

    Words on Repeat is the only vocabulary app that combines AI-powered content extraction with FSRS spaced repetition - all for free.
    Paste any URL, upload a PDF, or import YouTube subtitles and AI extracts a study-ready flashcard deck with translations, example sentences, and grammar notes in seconds. No other tool offers all four input methods with automatic vocabulary extraction.

    What sets it apart:

    • AI extraction from real content. Turn any article, PDF, or YouTube video into flashcards in seconds
    • Grammar notes on every card. Contextual tips like "irregular past tense: fui/fue/fueron" or "use por for duration, para for deadline" - no competitor provides this
    • 185+ curated public decks in 12 languages, organized by CEFR level (A1โ€“C2)
    • Web-first PWA - no app store download, works offline, installs to your home screen on any device

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Is Words on Repeat good?

Words on Repeat appears to be a niche tool/service focused on repetitive word or phrase practice, likely aimed at language learning, memorization, or habit-building through repetition; without direct hands-on testing or verified user reviews, a definitive quality rating can't be fully confirmed, but the concept has practical value for specific use cases.

Why choose Words on Repeat?

  • Repetition-based learning is a scientifically supported method for memory retention and habit formation
  • Likely offers a simple, focused interface without unnecessary distractions common in bloated learning apps
  • Could be useful as a low-cost or free supplementary tool alongside other language or study resources
  • Niche tools like this often cater well to specific repetitive practice needs that broader apps don't address directly

Recommended for

  • Language learners wanting to reinforce vocabulary through repetition
  • Students memorizing terms, quotes, or specific phrases
  • Users looking for a lightweight, no-frills repetition practice tool
  • People building habits around specific words or affirmations
  • Those seeking a supplementary tool rather than a comprehensive learning platform

External links

We have collected here some useful links to help you find out if Words on Repeat is good.

  • Public traffic stats of Words on Repeat

    Check the traffic stats of Words on Repeat on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.

  • Domain Rating (DR)

    Check the "Domain Rating" of Words on Repeat on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of Words on Repeat's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.

  • Domain Authority (DA)

    Check the "Domain Authority" of Words on Repeat on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.

  • Public opinion on Reddit

    The latest comments about Words on Repeat on Reddit. This can help you find out how popualr the product is and what people think about it.

Social recommendations and mentions

We have tracked the following product recommendations or mentions on various public social media platforms and blogs. They can help you see what people think about Words on Repeat and what they use it for.
  • Why FSRS Is Better Than SM-2
    Words on Repeat ships FSRS as the default for every user โ€” free and paid. No configuration screen, no advanced settings toggle, no YouTube tutorial explaining where to find it. You sign up, pick a deck, and start studying with state-of-the-art scheduling from your first review. The algorithm is invisible, which is exactly how it should be. - Source: dev.to / 19 days ago

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