Comparison

Vocabulary Builder by Lockcard vs Flashcard Dictionary

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Vocabulary Builder by Lockcard

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.

Highlights
  • Learn words in real context
  • Expand vocabulary
  • Improve expression
  • Daily word learning
  • Discover new words
Features
Read full description

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/

About

Flashcard Dictionary

This app helps you memorize words more effectively by generating personalized flashcards based on your progress. It utilizes definitions from the Oxford Dictionary, offering clear and concise explanations ideal for English learners.

Highlights
  • Personalized flashcard generation
  • Memorization progress tracking
  • Oxford Dictionary definitions
  • Concise and understandable explanations
  • Ideal for English learners
Features
Read full description

By using our algorithm to keep track of your memorization progress, we generate flashcards for you to memorize saved words better. We use definitions from Oxford Dictionary which is the most concise and understandable for English learners compared to other dictionaries. Standard Apple Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Vocabulary Builder by Lockcard4 screens
Flashcard Dictionary4 screens

Verdict

The call

The clearest difference is rating: Vocabulary Builder by Lockcard at 4.7 against Flashcard Dictionary's 4.3. Vocabulary Builder by Lockcard also leads on review sentiment (80% vs 50%) and ratings volume (154 vs 4). Flashcard Dictionary's advantage is update cadence (every 9 days vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Vocabulary Builder by Lockcard sells 8 in-app purchases, starting at $5.99 per month and Flashcard Dictionary sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Vocabulary Builder by Lockcard holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Vocabulary Builder by Lockcard has 154 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 80% of Vocabulary Builder by Lockcard's written reviews are positive against 50% of Flashcard Dictionary's.

UpkeepUpdate frequency

Vocabulary Builder by Lockcard ships an update every 2 months, Flashcard Dictionary every 9 days. The most recent releases landed on September 21, 2026 and July 5, 2026 respectively.

Scorecard4 real differences · 6 level
Vocabulary Builder by Lockcard versus Flashcard Dictionary: the parameters behind the verdict, then further details
ParameterVocabulary Builder by LockcardFlashcard Dictionary
PriceFreeFree
Rating4.7 (154 ratings) — better4.3 (4 ratings)
Positive reviews79.7% of reviews — better50.0% of reviews
Number of ratings154 — better4
Update frequencyEvery 2 monthsEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.514.0 — better
Further details — not scored
Size114 MB14 MB
Age rating4+4+
Developerxinyi fuYusen Zhang

Customer experience

Vocabulary Builder by Lockcard

All ratings154 ratings
Positive94.2%
Neutral0.0%
Negative5.8%
Written reviews59 reviews
Positive79.7%
Neutral5.1%
Negative15.3%

Flashcard Dictionary

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews4 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

Bugs and requests

Vocabulary Builder by Lockcard

Reported bugs

10 issues
  • App crashes on opening
  • App crashes when turning on notifications
  • Notifications not working
  • Progress bar for notifications stuck at 10%
  • Words looked up on computer don't appear on phone
Show 5 more
  • Widget not working
  • Login button not working after payment
  • Wordles are a day behind
  • App crashes after last update
  • Cannot add new words after update

Requested features

13 requests
  • Add Traditional Chinese language
  • Fix sync with Chrome plugin
  • Make testing within the app an option
  • Add option to upload own word lists
  • Add image import from internet
Show 8 more
  • Add Chinese > English dictionary
  • Add Chinese word notifications
  • Add import/export word function
  • Add more notification times
  • Analyze and predict memorization progress
  • Add example sentences in dictionary
  • Add Chinese version of the app
  • Add ability to add own notes on flashcards

Flashcard Dictionary

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Vocabulary Builder by Lockcard

Subscriptions6
  • 按月订阅7 Days trial$5.991 Month
  • Monthly$7.491 Month
  • 按季度订阅7 Days trial$14.993 Months
Show 3 more
  • Quarterly$19.993 Months
  • 按年订阅7 Days trial$39.991 Year
  • Yearly$61.991 Year
One-time2
  • 终身会员$79.99
  • 终身会员$149.00
2 purchases

Flashcard Dictionary

Subscriptions2
  • Monthly Premium Subscription$0.991 Month
  • Yearly Premium Subscription$9.991 Year

Questions

Is Vocabulary Builder by Lockcard free?
Vocabulary Builder by Lockcard is free to download, with in-app purchases available.
Is Flashcard Dictionary free?
Flashcard Dictionary is free to download, with in-app purchases available.
Which has better reviews, Vocabulary Builder by Lockcard or Flashcard Dictionary?
Vocabulary Builder by Lockcard is rated higher. Vocabulary Builder by Lockcard averages 4.7 out of 5 from 154 ratings, while Flashcard Dictionary averages 4.3 from 4 ratings.
Do Vocabulary Builder by Lockcard or Flashcard Dictionary have ads?
Neither Vocabulary Builder by Lockcard nor Flashcard Dictionary shows ads.
Which is updated more often, Vocabulary Builder by Lockcard or Flashcard Dictionary?
Vocabulary Builder by Lockcard ships an update every 2 months, and Flashcard Dictionary every 9 days. Most recently, Vocabulary Builder by Lockcard was updated on September 21, 2026 and Flashcard Dictionary on July 5, 2026.

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