Vocabulary Builder by Lockcard
xinyi fu Education iPhoneiPadiPod touch
Vocabulary Builder by Lockcard is a free Education app for iPhone and iPad by xinyi fu. Rated 4.7/5 from 156 ratings. Requires iOS 15.5.
- Rating
- 4.7
- 156 ratings
- Price
- Free
- on the App Store
- Size
- 114 MB
- Age 4+
- Updated
- Sep 19
- 2026 · v3.3.0
Screenshots
About Vocabulary Builder by Lockcard
You looked it up. You forgot it. Again. Lockcard is your personal vocabulary notebook. Save a word the moment you meet it, keep the sentence it came from, and see it again on your lock screen until it sticks. SAVE WORDS WHERE YOU MEET THEM • Look up any word in the app and it's saved automatically, with an example sentence • Capture words from articles, PDFs, and web pages with the Lockcard Chrome extension, synced to your iPhone • Add words from books, podcasts, or a conversation you just had • Organize everything into Collections KEEP THE CONTEXT, NOT JUST THE WORD • Every word keeps its original sentence and source • Word Journey shows where a word came from, when you saved it, and how you've reviewed it • AI explanations and examples tailored to you, plus follow-up questions about any word REVIEW WITHOUT BUILDING A NEW HABIT • Your words on the lock screen and home screen widgets • Notification flashcards that bring words back before you forget them • AI word podcasts for passive listening NEW: ELEVATE PRACTICE • Flashcards built from the words that most need review • Flip the card, or recall the word from a fill-in-the-blank sentence • Quick 5, Daily 12, or Deep 25, with daily streaks MADE FOR LEARNERS WHO ALREADY LIVE IN ENGLISH If you read articles, watch videos, or prep for IELTS, TOEFL, or GRE, and keep running into words you don't know, Lockcard turns them into a vocabulary library that's entirely yours. What learners say: "Y'all are amazing. Ever since I started using Lockcard, it's become something I use daily" — James, high school student "Super helpful especially with my busy schedule" — Peng, international university student "The simplicity and beautiful designs make it such a delight to use" — Charlotte "One of the most impressive apps I've used in a long time!" — Jordan By downloading this app, you agree to Apple's standard End User License Agreement https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & reviews
4.7
156 ratings
What’s new
Version 3.3.0 · Updated September 19, 2026
New: Elevate Flashcard Practice Turn your saved words into real practice with the new Elevate tab. • Flip & Swipe: Tap a card to see its meaning. Swipe right for "Got it", left for "Again". • Smart Selection: Elevate picks the words that most need review, in the language you're learning. • Words in Context: Cards switch between the word and a fill-in-the-blank example sentence. • Your Pace: Choose Quick 5, Daily 12, or Deep 25, or practice a Collection or your mastered words. • Undo: Swiped the wrong way? Undo your last card. • Streaks: Every finished set counts toward your daily streak. • Go Deeper: Tap a word to open its details and hear its pronunciation. Improvements • Updated for iOS 26 with a refreshed tab bar. • Faster, more reliable AI search and pronunciation. • The game widget now shows a completion message when you finish a set. • Clearer Feedback pages, and Word Journey now tracks where words came from more accurately. Bug Fixes • Widgets now stay in sync with the app, and holiday widget words refresh on time. • The learning language you choose during onboarding is now saved correctly. • Fixed avatar taps occasionally not responding.
App privacy
The developer, xinyi fu, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Search History: Search History
- Identifiers: User ID, Device ID
- Usage Data: Product Interaction
- Diagnostics: Crash Data
Used for: Analytics, App Functionality
Alternatives to Vocabulary Builder by Lockcard
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Vocabulary Builder by Lockcard | 4.7 / 5 (156 ratings) | Free | September 19, 2026 | |
| Wozi - Vocabulary Builder | 4.6 / 5 (45) | Free | Oct 15, 2026 | Compare |
| New Vocabulary Builder: Daily | 4.8 / 5 (34) | Free | Dec 24, 2025 | Compare |
| Painless - Vocabulary Builder | 4.6 / 5 (94) | Free | Aug 21, 2026 | Compare |
| GRE English Vocabulary Builder | 4.6 / 5 (105) | Free | Apr 1, 2026 | Compare |
| Vocab Builder - Learn Words | 4.8 / 5 (69) | Free | Oct 12, 2026 | Compare |
| MyVocab - Learn new words | 4.7 / 5 (372) | Free | Sep 15, 2026 | Compare |