Lockcard - Vocabulary Builder from YouTube, Articles & AI

Tracking since Apr 1, 2026.

Changelog

• May 11, 2026
  name

  Lockcard - Vocabulary Builder from YouTube, Articles & More

  Lockcard - Vocabulary Builder from YouTube, Articles & AI

• Apr 22, 2026
  description

  ✨ WHY CHOOSE LOCKCARD?
  
  🌐 LEARN VOCABULARY AS YOU BROWSE
  • Works across the web: news sites, blogs, newsletters, research papers, and more
  • Example sites: YouTube, BBC Learning English, The Economist, The New Yorker, NYT, and many others (not affiliated)
  • Learn naturally during your normal browsing — no separate “study time” required
  
  🎬 YOUTUBE INTEGRATION
  • Click any word in YouTube subtitles to learn while watching
  • Learn from TED talks, courses, educational videos, and more
  • Save words with video context and timestamps for easy reference
  • Seamlessly integrate vocabulary learning into your video watching routine
  
  📄 PDF SUPPORT
  • Select words directly in PDF files
  • Custom PDF viewer with seamless word selection
  • Learn from research papers, ebooks, and documents effortlessly
  
  💾 CONTEXT-AWARE SAVING
  • Save words with their original context automatically preserved
  • Remember exactly where and how you encountered each word
  • Learn from real contexts, not isolated word lists
  • Smart duplicate detection with context merging
  • Organized by articles and videos you've read/watched
  
  🔁 ENCOUNTER TRACKING
  • See how many times you’ve met a word across different pages/videos
  • Keep multiple real-world contexts for the same word (not just one definition)
  • Build a personal “where I learned this” history
  
  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
  
  💡 HOW IT WORKS:
  
  1. Browse normally - read articles, watch YouTube videos, surf the web
  2. Discover in context - encounter new words in real content, not word lists
  3. Save with context - one-click save preserves where and how you learned each word
  4. Sync to iPhone - your vocabulary collection syncs seamlessly across devices
  5. Practice innovatively - review with notification cards, widgets, and AI podcasts on iOS

  Lockcard vocabulary builder helps you learn English from real content such as YouTube videos, online articles, PDFs, and web pages.
  
  Instead of memorizing word lists, Lockcard helps you learn vocabulary in context. You can save words directly from what you read and watch, always with the original sentence and meaning preserved.
  
  This makes it easy to understand how words are actually used in real situations, not just in definitions.
  
  With Lockcard vocabulary builder, you can:
  
  * Save vocabulary from YouTube, articles, PDFs, and web pages
  * Capture words with full sentence context
  * Build a personal vocabulary list automatically
  * Track your vocabulary across different content
  * Review words with spaced repetition and lightweight reminders
  * Sync vocabulary to mobile for continuous learning
  
  Lockcard vocabulary builder is designed for multilingual learners who want to build real vocabulary from real input, not isolated word lists.
  
  Whether you are learning English for study, work, exams, or daily communication, Lockcard vocabulary builder helps you turn everyday content into long-term vocabulary memory.

• Apr 22, 2026
  short_description

  Learn vocab from YouTube, articles & PDFs. Save with context, track encounters, and sync to iPhone for review.

  Learn vocabulary from YouTube, articles & PDFs. Save with context, track encounters, and sync to iPhone for review.

• Apr 22, 2026
  name

  Lockcard - Vocabulary Builder

  Lockcard - Vocabulary Builder from YouTube, Articles & More

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