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Vocabulary Builder by Lockcard icon

Vocabulary Builder by Lockcard

Learn words in context & AI
US flag US
1 of 1 storefronts
Content in en-US
154 Ratings
4.7
★★★★★
Age Rating
4+
Years
Developer
Language
EN
+7 More
Size
119
MB

Information

Apple ID1534553106
Bundle IDcom.xinyi.lockcard
SellerSeller
Min iOS15.5
Min macOS12.4
Device familiesiphone, ipod
Released2021-03-15
Copyright© Lockcard
WebsiteLink ↗
Privacy policyLink ↗

Preview 1 platform

iPhone 9 images

iPhone screenshot
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What’s New Version 3.2.10

New Features 1. Word Journey [Learning Timeline]: Every saved word now has its own Journey. See where it came from, when it was saved, what notes were added, and how it has been reviewed. 2. Translation Controls [Show or Hide Translations]: New translation controls let you choose whether translations appear on word detail pages.

Description

Lockcard is a vocabulary builder that helps you learn words in context across languages from real content such as YouTube videos, articles, PDFs, and any web pages you read or watch. Instead of memorizing isolated word lists or using traditional flashcards alone, Lockcard lets you build vocabulary from real-world context and turn everyday content into long-term memory. CAPTURE FROM REAL CONTENT Turn what you read and watch into learning material. • Save vocabulary from YouTube, articles, PDFs, and web pages • Highlight words with full sentence context and source link • One-click capture from any browsing or learning environment • Sync all saved words automatically to your mobile app LEARN IN CONTEXT Understand how words are actually used. • Keep original sentences and real usage context • Track where and how you encountered each word • Build vocabulary from real-world exposure, not dictionary definitions • Strengthen understanding through repeated encounters PERSONALIZED LEARNING SYSTEM Turn vocabulary into long-term memory. • Flashcards (fill-in, flip, multiple choice) • Spaced repetition via notifications and widgets • Passive learning through word podcasts • Lightweight daily review built into your routine AI VOCABULARY TUTOR Learn words in a personalized way. • AI explanations tailored to your learning profile • Chat with AI about specific words and usage • Generate personalized examples and explanations • Learn vocabulary through interaction, not memorization BUILT FOR REAL LEARNERS Lockcard connects real content with real learning. It transforms everyday exposure into a personalized vocabulary system—helping you move from encountering words to actually using them. What our users say about Lockcard: "Ya'll are amazing. Ever since I started using Lockcard, it's become something I use daily" — James (15y high school student) "Super helpful especially with my busy schedule" — Peng (International Uni student) "The simplicity and beautiful designs make it such a delight to use" — Charlotte (works @Duolingo) "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/

In-App Purchases US pricing

按月订阅 Subscription
Monthly 7-day free trial$5.99
按季度订阅 Subscription
3 months 7-day free trial$14.99
按年订阅 Subscription
Yearly 7-day free trial$39.99
Lockcard Pro Subscription
Monthly · Monthly$7.49
Quarterly · 3 months$19.99
Yearly · Yearly$61.99
One-Time Purchases
终身会员$79.99
终身会员$149.00

Capabilities

In-App Purchases

Accessibility

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Version history 25 versions

Build 887266914v3.2.102026-06-22 18:27:17
New Features 1. Word Journey [Learning Timeline]: Every saved word now has its own Journey. See where it came from, when it was saved, what notes were added, and how it has been reviewed. 2. Translation Controls [Show or Hide Translations]: New translation controls let you choose whether translations appear on word detail pages.
Build 886348233v3.2.92026-05-31 21:43:26
Bug Fixes - Fix the issue where notifications fail to arrive in some cases. - Optimize widget performance and fix the issue where widgets show no content after first install. Feedback You can submit feedback directly in the in-app **Feedback** section; also feel free to email us: shirlxfu@gmail.com, or contact us Wechat: shirlxfu.
Build 885321118v3.2.82026-05-18 14:38:39
New Features Personalized AI Word Explanations - [Personalization]: New Personalization settings page. Configure your proficiency level, learning goal, age group, and profession to receive AI-generated word explanations tailored to your profile. - [Custom Descriptions]: Premium users can edit custom descriptions for each personalization option, allowing the AI to better understand your specific learning needs. Enhanced Multilingual Support - [Multilingual Search]: Added a multilingual selection button at the top of the search text field, supporting more language pairs for word lookup. - [Multilingual Onboarding]: The onboarding flow now fully supports multiple languages with adaptive layout improvements. - [Multilingual Pronunciation]: Widgets now support multilingual pronunciation; tapping phonetics in search detail also plays the corresponding language's pronunciation. - [British Accent]: Added en-GB British accent support. Improvements LLM Search Experience - Refined LLM search prompts for improved accuracy and relevance of generated content. - Fixed parsing issues where LLM search results occasionally contained no translation content. Bug Fixes Critical Fixes - Fixed layout adaptation issues on the onboarding page across different devices. - Improved app stability with multiple known issues resolved. Feedback You can submit feedback directly in the in-app Feedback section; also feel free to email us: shirlxfu@gmail.com, or contact us on Wechat: shirlxfu.
Build 881393616v3.2.72026-01-13 00:17:38
New Features AI Podcast Generator - [AI Podcast Generation]: Transform words into learning podcasts with AI-generated dialogues. Create engaging English learning content through natural conversations between hosts. Create Your Own MCP Server - [MCP Server]: Create your own MCP Server to save words from Cursor or Claude Desktop directly to LockCard. Everything syncs seamlessly to the cloud for a smooth workflow. Server Infrastructure Upgrade - [Performance Enhancement]: Faster sync, better reliability, and enhanced security. Your learning data is now backed by enterprise-grade infrastructure. Lifetime Membership - [Lifetime Access]: One-time purchase, lifetime use. New Feedback Board - [Feedback]: New in-app Feedback section where you can request features and report bugs. Bug Fixes - Fixed an issue where word pronunciation had no sound when the phone was in vibrate/silent mode. Feedback You can submit feedback directly in the in-app **Feedback** section; also feel free to email us: shirlxfu@gmail.com, or contact us on Instagram:LockcardApp or on Wechat: shirlxfu.
Build 880967226v3.2.62026-01-03 00:24:32
New Features AI Podcast Generator - [AI Podcast Generation]: Transform words into learning podcasts with AI-generated dialogues. Create engaging English learning content through natural conversations between hosts. Create Your Own MCP Server - [MCP Server]: Create your own MCP Server to save words from Cursor or Claude Desktop directly to LockCard. Server Infrastructure Upgrade - [Performance Enhancement]: Faster sync, better reliability, and enhanced security. Your learning data is now backed by enterprise-grade infrastructure. Lifetime Membership - [Lifetime Access]: One-time purchase, lifetime use. New Feedback Board - [Feedback]: New in-app Feedback section where you can request features and report bugs. Bug Fixes Critical Bugs Fixed - Fixed multiple critical bugs to improve app stability and user experience. Feedback You can submit feedback directly in the in-app **Feedback** section; also feel free to email us: shirlxfu@gmail.com, or contact us on Instagram:LockcardApp or on Wechat: shirlxfu.
Build 879473769v3.2.52025-12-23 03:17:34
New Features AI Podcast Generator - [AI Podcast Generation]: Transform words into learning podcasts with AI-generated dialogues. Create engaging English learning content through natural conversations between hosts. Create Your Own MCP Server - [MCP Server]: Create your own MCP Server to save words from Cursor or Claude Desktop directly to LockCard. Server Infrastructure Upgrade - [Performance Enhancement]: Faster sync, better reliability, and enhanced security. Your learning data is now backed by enterprise-grade infrastructure. Bug Fixes Critical Bugs Fixed - Fixed multiple critical bugs to improve app stability and user experience. Feedback If you have any feedback, please email us: bravetsia@gmail.com, shirlxfu@gmail.com, or contact us on Instagram:LockcardApp or on Wechat: shirlxfu.
Build 878147379v3.2.42025-09-16 09:08:32
## New Features - **[LLM-Powered Search]:** Added Large Language Model (LLM) streaming capabilities, enabling intelligent word search and definition generation with real-time response processing. - **[Intelligent Response Processing]:** Implemented timing mechanisms for LLM requests and parsing processes, providing detailed performance analysis. ## Bug Fixes ### App Stability - Fixed app crashes when entering word detail pages. - Resolved search-related crashes that could occur during word queries. ### Share Functionality Fixes - Fixed share functionality word lookup issues. ## Feedback If you have any feedback, please email us: shirlxfu@gmail.com, or contact us on Instagram: LockcardApp or on Wechat: shirlxfu.
Build 876187526v3.2.32025-07-09 04:30:11
Fixed the issue where widgets are not displayed.
Build 876039093v3.2.22025-07-01 17:23:47
New Features Smart Vocabulary Source Tracking - Added vocabulary source tracking functionality to record where each word was learned from, helping you better manage and review your learning journey Improvements Multi-Context Learning Support - Enhanced word learning system now supports saving multiple usage contexts and example sentences for the same word, making your learning more comprehensive and thorough Speech Recognition Upgrade - Updated Microsoft Speech Services SDK to latest version 1.44.0, significantly improving speech recognition accuracy and response speed Learning Data Sync Optimization - Improved vocabulary synchronization mechanism that intelligently merges different contexts for the same word, avoiding duplicate learning and enhancing study efficiency Bug Fixes Interface Cleanup - Removed unused test features from settings page, simplifying the user interface and improving user experience Data Integrity Improvements - Optimized vocabulary data storage structure to ensure complete preservation of learning progress and example sentence translations Performance Enhancements System Compatibility Upgrade - Enhanced support for iOS 15.5, delivering better system performance and stability App Responsiveness - Optimized build configuration to improve app launch speed and overall running smoothness
Build 866770606v3.2.12024-07-30 17:28:20
## Bug Fixes - Fixed an app crash bug caused by a third-part framework. - Resolved the issue where notifications weren’t appearing. - Fixed the issue where the app wasn’t loading the word when users shared from a website. ## Feedback If you have any feedback, please email us: shirlxfu@gmail.com, or contact us on Instagram:LockcardApp or on Wechat: shirlxfu.
Build 866287237v3.22024-05-29 07:59:41
New Features - ["Learn later"]: "Learn later" Tab showcases the app's widgets and notifications functionality, indicating whether these features are enabled. - [Configurable Widgets and Notifications]: Users can now customize the content, learning progress, and refresh frequency of widgets and notifications. - [Account Deletion]: Support for account deletion has been added. Bug Fixes - Fixed a bug where entering the word detail page could cause the app to crash. - Resolved issues where searching for words might trigger app crashes. - Addressed problems with notifications not pushing new words. - Corrected issues with word progress not updating. Performance Improvements - Optimized app startup time. Design Updates - [Later Learning Page]: A new page for configuring the content, frequency, and refresh settings of widgets and notifications. - [New Tabs]: Added the Elevate and Learn Later tabs. General Improvements - The word completion list is now sorted by the time words are completed rather than the time they were added. Feedback If you have any feedback, please email us: shirlxfu@gmail.com, or contact us on Instagram:LockcardApp or on Wechat: shirlxfu.
Build 863130658v3.12024-01-26 14:13:57
New Features [Account sign up]: Lockcard account sign up in the app have been added. New account can be registered both in the app and Chrome Plug-in. [New lock screen widget]:** Created a new lock screen widget. Users can review their saved words even don’t need to unlock their phones. Enhancements [Widgets compatibility iOS 17]: Adopted our widgets with iOS 17 and give users a better user-experience. You can review your saved words on our widgets without any flash. [Pronunciation improvement]: Now, our word pronunciation sounds more nature, and you won’t be bothered by a robotic voice. [Up to 3 words]: Enable normal users to adjust the word count in a notification by up to 3 words. Performance Improvements [App performance improvement]: Optimized the performance of loading word detail page and word list page. Design Updates [Login Page]: The new login page allows users to switch between logging in and signing up smoothly. General Improvements [Code modularization]: Refactor and reorganize the code for the AppDelegate, widgets, word list page, and word detail page to improve readability, scalability, and maintenance. Feedback If you have any feedback, please email us: shirlxfu@gmail.com, or contact us on Instagram:LockcardApp or on Wechat: shirlxfu.
Build 858799920v3.02023-12-29 22:20:01
New Features - [Premium plan]: LockcardPro is now available with an early bird discount. Visit the Settings page or check the app for more information on the premium features. - [iCloud synchronization]: Pro users can now access iCloud synchronization for their saved words. - [Unlimited number of custom remarks]: Pro users can create an unlimited number of remarks on saved words and review them through notifications or widgets. - [Unlimited number of notifications]: Pro users can now create unlimited notifications at any given time. - [Account login and logout]: Lockcard account login and logout have been added. A new account has to be registered on the Chrome Plug-in. - [Chrome plug-in synchronization]: The Chrome plug-in beta is now available. Bookmark new words on browsers and add them to Lockcard. Design Enhancements - [Onboarding]: New onboarding has been added. - [Word Detail Page]: Words synced up from the Chrome Plug-in now include a link to the source where the words were saved. - [New Banner]: A new banner about the Chrome plug-in (beta) has been added. Bug Fixes - [Force Quit]: Fixed an issue related to force quitting the app. Feedback If you have any feedback, please email us at shirlxfu@gmail.com or on Instagram: LockcardApp or WeChat: shirlxfu.
Build 857998534v2.102023-06-22 13:11:42
- Select the last recently used category - Optimize the loading time for entering the word details page - Fix bugs
Build 856632277v2.8.12023-04-25 15:05:00
A few bug fixes. - UI crashes for iPhone SE - Toggle Widget UI fix - App tutorial UI fix Update feature: - last collection selection
Build 856255950v2.82023-04-11 13:37:21
- change the toggle widget to a normal theme - added pronounce button on widgets - added trackers in gamified widget
Build 854909533v2.72023-02-12 21:46:47
- New widget game
Build 854072026v2.52022-12-25 06:33:09
- Interactive vocabulary widget games - View and add widgets in the app with clear instructions - Product feedback survey
Build 852443862v2.42022-10-19 15:37:53
• Progress Summary in-app and as a widget
Build 852218026v2.3.12022-09-15 12:55:40
• Bug fixes :) • Removing Wordle notifications and settings
Build 851753296v2.3 test2022-09-08 20:38:47
• Add your words to collections! • Bug fix (no more notifications for completed words)
Build 851561623v2.22022-08-15 00:02:12
• NEW notifications quiz! (read definition, guess the word) • Add 'word type' to your custom definitions
Build 851214422v2.12022-07-30 03:08:18
• Sort your words by Time, Alphabet and Progress. • Wordle hint list updated (sorry again)
Build 850798430v2.02022-07-17 16:46:40
• Add your OWN definitions and notes to words!
Build 850366549v1.13.12022-06-22 13:08:59
• Wordle hints are back (we are considering removing this feature soon, so let us know if you use it)
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Availability 1 of 1 storefronts

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Change log 29 changes · US

releaseNotes updated
New Features 1. Word Journey [Learning Timeline]: Every saved word now has its own Journey. See where it came from, when it was saved, what notes were added,
description updated
Lockcard is a vocabulary builder that helps you learn words in context across languages from real content such as YouTube videos, articles, PDFs, and any web pa
subtitle updated
Learn words in context & AI
name updated
Vocabulary Builder by Lockcard
Version 3.2.10 released
New Features 1. Word Journey [Learning Timeline]: Every saved word now has its own Journey. See where it came from, when it was saved, what notes were added, and how it has been reviewed. 2. Translation Controls [Show or Hide Translatio
Version 3.2.9 released
Bug Fixes - Fix the issue where notifications fail to arrive in some cases. - Optimize widget performance and fix the issue where widgets show no content after first install. Feedback You can submit feedback directly in the in-app **Feed
Version 3.2.8 released
New Features Personalized AI Word Explanations - [Personalization]: New Personalization settings page. Configure your proficiency level, learning goal, age group, and profession to receive AI-generated word explanations tailored to your pr
Version 3.2.7 released
New Features AI Podcast Generator - [AI Podcast Generation]: Transform words into learning podcasts with AI-generated dialogues. Create engaging English learning content through natural conversations between hosts. Create Your Own MCP Ser
Version 3.2.6 released
New Features AI Podcast Generator - [AI Podcast Generation]: Transform words into learning podcasts with AI-generated dialogues. Create engaging English learning content through natural conversations between hosts. Create Your Own MCP Ser
Version 3.2.5 released
New Features AI Podcast Generator - [AI Podcast Generation]: Transform words into learning podcasts with AI-generated dialogues. Create engaging English learning content through natural conversations between hosts. Create Your Own MCP Ser
Version 3.2.4 released
## New Features - **[LLM-Powered Search]:** Added Large Language Model (LLM) streaming capabilities, enabling intelligent word search and definition generation with real-time response processing. - **[Intelligent Response Processing]:** Im
Version 3.2.3 released
Fixed the issue where widgets are not displayed.
Version 3.2.2 released
New Features Smart Vocabulary Source Tracking - Added vocabulary source tracking functionality to record where each word was learned from, helping you better manage and review your learning journey Improvements Multi-Context Learning Suppo
Version 3.2.1 released
## Bug Fixes - Fixed an app crash bug caused by a third-part framework. - Resolved the issue where notifications weren’t appearing. - Fixed the issue where the app wasn’t loading the word when users shared from a website. ## Feedback If
Version 3.2 released
New Features - ["Learn later"]: "Learn later" Tab showcases the app's widgets and notifications functionality, indicating whether these features are enabled. - [Configurable Widgets and Notifications]: Users can now customize the content,
Version 3.1 released
New Features [Account sign up]: Lockcard account sign up in the app have been added. New account can be registered both in the app and Chrome Plug-in. [New lock screen widget]:** Created a new lock screen widget. Users can review their sav
Version 3.0 released
New Features - [Premium plan]: LockcardPro is now available with an early bird discount. Visit the Settings page or check the app for more information on the premium features. - [iCloud synchronization]: Pro users can now access iCloud syn
Version 2.10 released
- Select the last recently used category - Optimize the loading time for entering the word details page - Fix bugs
Version 2.8.1 released
A few bug fixes. - UI crashes for iPhone SE - Toggle Widget UI fix - App tutorial UI fix Update feature: - last collection selection
Version 2.8 released
- change the toggle widget to a normal theme - added pronounce button on widgets - added trackers in gamified widget
Version 2.7 released
- New widget game
Version 2.5 released
- Interactive vocabulary widget games - View and add widgets in the app with clear instructions - Product feedback survey
Version 2.4 released
• Progress Summary in-app and as a widget
Version 2.3.1 released
• Bug fixes :) • Removing Wordle notifications and settings
Version 2.3 test released
• Add your words to collections! • Bug fix (no more notifications for completed words)
Version 2.2 released
• NEW notifications quiz! (read definition, guess the word) • Add 'word type' to your custom definitions
Version 2.1 released
• Sort your words by Time, Alphabet and Progress. • Wordle hint list updated (sorry again)
Version 2.0 released
• Add your OWN definitions and notes to words!
Version 1.13.1 released
• Wordle hints are back (we are considering removing this feature soon, so let us know if you use it)
expanded screenshot