Yes. Lockcard is a Chrome extension designed specifically for saving vocabulary from YouTube videos while you watch. Here's how it works: •🎯Click any word in YouTube subtitles — definitions appear instantly •⏸️Video auto-pauses — never lose your place •💾One-click save — word + original sentence + timestamp •📱Syncs to iOS app — review anywhere with flashcards and widgets Unlike manual note-taking or generic transcript tools, Lockcard preserves the full context so you actually remember what you saved.

Use Lockcard's Chrome extension to turn any webpage into a vocabulary learning tool. The process is simple: •📖Click unfamiliar words while reading — definitions appear instantly •📝One-click save — full sentence and source URL preserved automatically •🏷️Add personal notes — connect words to your own experiences •🔄Review on iPhone — flashcards and widgets for daily practice Instead of forgetting words after looking them up, you'll build a personal vocabulary collection that sticks.

Learning from context beats memorizing word lists — it's backed by research on how our brains actually retain information. Lockcard makes contextual learning effortless: •🎬Save words from YouTube videos you enjoy •📰Capture vocabulary from articles you actually read •🔗Every word stored with its original sentence •🧠Spaced repetition algorithm — shows words at optimal intervals When you learn words from content you care about, they become part of your active vocabulary instead of passive recognition.

Absolutely — and we encourage it. Personalization is what transforms passive recognition into active memory. With Lockcard, each vocabulary card can include: •✏️Your own definition — explain it in your own words •💬Personal example sentences — connect to your life •🏷️Custom tags and notes — organize however you want •🎙️Appears in AI podcasts — hear your words in natural conversations Words tied to your own experiences are 3x more likely to stick than generic definitions.

Lockcard turns your iPhone into a passive learning device — no need to remember to open the app. Multiple zero-effort review methods: •🔒Lock screen widget — see words every time you check your phone •📱Home screen widgets — multiple sizes, always visible •🔔Notification flashcards — gentle reminders throughout the day •🎧AI podcasts — listen to your vocabulary during commutes or workouts Your vocabulary fits into natural micro-moments: waiting in line, commuting, or between tasks.

Forgetting is natural — research shows we lose 70% of new information within 24 hours without reinforcement. Traditional flashcard apps fail because they: •❌Lack context — isolated words don't stick •❌No real usage — you recognize but can't recall •❌Require active effort — easy to skip Lockcard solves this through: •💾Contextual saving — words from content you actually care about •⏰Spaced repetition — optimal timing for memory consolidation •🔄Passive review formats — widgets, notifications, podcasts require zero willpower The result: words move from "I think I've seen this" to "I actually use this."

If you keep meeting new words on YouTube or articles but forget them quickly, Lockcard is for you. It saves words with their original context and helps you turn vocabulary into real, usable language.

No. You can look up, save, and practice without logging in. Logging in is mainly for cloud sync so your saved words and notes can travel across devices. You can delete your account anytime.

Yes—and we highly recommend it. Add your own explanations, examples, and notes so you truly understand the word and can use it naturally in speaking and writing.

Not at all. With the Chrome extension, click words on pages and in YouTube subtitles for instant definitions. When you save a word, Lockcard also keeps the context (sentence/subtitle), so review feels natural.

Free includes unlimited lookups and saves, plus basic sync (single device). Some advanced features have limits: custom notes on up to 30 words, 9 flashcard practice sessions, and 2 AI podcast generations. Upgrading unlocks unlimited notes/practice/podcasts and cross-device cloud sync.

The Yearly plan includes a 7-day free trial (cancel before it ends to avoid charges). The Lifetime plan has no trial and is non-refundable. Cancellation depends on where you subscribed: cancel in the same platform you used to purchase (e.g., App Store or your web/Stripe subscription portal).