Vocabulary Builder by Lockcard

Vocabulary Builder by Lockcard

Save words & review with AI

154 ratings
59 reviews
Free
In-App Purchases

Details

Released
March 15, 2021
Updated
September 19, 2026

Features

Vocabulary Builder by Lockcard screenshot #1 for iPhone
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Vocabulary Builder by Lockcard screenshot #7 for iPhone
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Vocabulary Builder by Lockcard screenshot #9 for iPhone
Vocabulary Builder by Lockcard screenshot #10 for iPhone
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About

Expand your vocabulary by learning words in their real-world context. This app helps you discover new words, understand their meanings, and use them confidently to express yourself more eloquently. It's designed for daily use and fits into busy schedules.

✓Learn words in real context
✓Expand vocabulary
✓Improve expression
✓Daily word learning
✓Discover new words
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What users say about Vocabulary Builder by Lockcard

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What's New in Vocabulary Builder by Lockcard

3.3.0

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.

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Subscriptions & In-App Purchases

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$5.991 Month
7 Days trial
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User reviews

App not accessible after paid

Don't waste your money! I paid for a monthly subscription, but when I want to log in, the button does not work; only the sign-up button works! I asked for a refund, but so far, no one has responded!

Very slow opening and no sync possible with webs

It crashes every time opening the app so I cant review nor add new words.
Also I tried syncing the list on chrome plug in but it doesn’t work so I can access the list only on iPhone.
Could you fix these problems?

Other than that, I like its different types of widget function and also that I can make my own vocab cards.
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Bugs and crushes

Before the last patch, app was working all fine but know it crashes a lot, and takes ages for app to turn on and get the main screen!!

Notifications doesn’t work

Great but the general feature doesn’t work - notifications doesn’t work. I turn on notifications settings everywhere, but no notifications

No more push notification??

My phone is currently 17.5.1 And since quite a while ago the app's "notification per day" won't work anymore. I didn't receive any notification at all. Is it because this is a pay function now? Please advise. I tried the free trial (7 days) version...but too no avail. Want to make sure it's not a bug issue before I pay for the app. Please advice. Thank you.
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Response from developer

Hi LL2010, thank you for the detailed message, and sorry for the confusion. Push notifications are still supported. In newer versions, notification content and learning progress can be customized, so please go to the Learn Later tab and configure them under Notification Flashcard. Also, please make sure notifications are enabled in iOS Settings and that you’re using the latest version of the app. If you still don’t receive notifications after setup, please contact us through the app’s support/contact option with your iOS version and device model so we can investigate further.

User experience

🐞

Reported Bugs

10 issues

App crashes on opening

Bug

App crashes when turning on notifications

Bug

Notifications not working

Bug

Progress bar for notifications stuck at 10%

Bug

Words looked up on computer don't appear on phone

Bug

Widget not working

Bug

Login button not working after payment

Bug

Wordles are a day behind

Bug

App crashes after last update

Bug

Cannot add new words after update

Bug
✨

Requested Features

13 requests

Add Traditional Chinese language

Feature

Fix sync with Chrome plugin

Feature

Make testing within the app an option

Feature

Add option to upload own word lists

Feature

Add image import from internet

Feature

Add Chinese > English dictionary

Feature

Add Chinese word notifications

Feature

Add import/export word function

Feature

Add more notification times

Feature

Analyze and predict memorization progress

Feature

Add example sentences in dictionary

Feature

Add Chinese version of the app

Feature

Add ability to add own notes on flashcards

Feature

FAQ

What does Lockcard do?

Lockcard is a vocabulary builder app designed to help users learn new words by encountering them in real-world contexts. It aims to make users more eloquent and confident in their self-expression by expanding their word knowledge.

How does Lockcard help me learn words?

The app focuses on learning words as they appear in various contexts, allowing for deeper understanding and retention. Users can search, save, and review words, integrating them into their daily vocabulary.

Is Lockcard free to use?

The application is free to download and use, with options for in-app purchases. This allows users to access core features for free while offering additional value through optional purchases.

Who is Lockcard for?

This app is beneficial for anyone looking to enhance their vocabulary and communication skills, including high school students, international university students, and professionals who want to express themselves more effectively.

What are the benefits of using Lockcard?

Users can expect to become more eloquent and confident in expressing themselves, discover new words and worlds through contextual learning, and integrate vocabulary building into their daily routines, even with a busy schedule.