Comparison

Word of the Day・Vocabulary vs Vocabulary Builder by Atlas

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

Head to head
About

Word of the Day・Vocabulary

Enhance your vocabulary with daily words, engaging games, and personalized quizzes. This app offers expert-curated content and interactive challenges to make learning stick and improve your communication skills.

Highlights
  • Daily word insights with definitions and examples
  • Vocabulary assessment and personalized learning plans
  • Word games like Hangman and Gaps
  • Crossword puzzles across various topics
  • Spaced repetition quizzes
  • Stop Saying feature for word alternatives
  • Home and Lock Screen widgets
Features
Read full description

Make vocabulary growth a daily habit with Word of the Day, a vocabulary-building companion created by humans, for humans. With daily words, games, and quizzes all in one app, it’s learning that actually sticks. Built in collaboration with leading language experts, our vocabulary database intelligently ranks words based on real-world usage patterns. After you take our vocabulary assessment and answer a few questions about your goals, we’ll create a personalized learning plan tailored to your needs, ensuring the words you see are ones you’ll want to use. With our unique combination of expert curation and smart design, Word of the Day transforms the simple act of growing your vocabulary into a powerful tool for self-improvement. WORD INSIGHTS - Each daily word is hand-selected by our editors and presented in a rich format with everything you need to understand and remember it. - Clear examples that show how the word lives in real sentences - Audio pronunciation so you can use the word with confidence - Thoughtful illustration to deepen your understanding and boost recall STOP SAYING COLLECTIONS Explore our Stop Saying feature to find stronger alternatives to common words and express yourself with greater precision. DAILY QUIZZES & CHALLENGES Harness the power of spaced repetition with 1-minute daily quizzes that move new vocabulary into long-term memory. Review saved words and track your progress over time. WORD GAMES Expand your vocabulary further with games designed around language and pattern recognition. - Hangman: reveal the hidden word before you lose all your hearts - Gaps: guess the hidden 5-letter word in a limited number of tries - Word Relay: link related words to form a chain. CROSSWORDS Solve themed puzzles across 15+ topics, including Entertainment, Technology, Travel, Idioms, and more. PERSONALIZED LEARNING Word of the Day adapts to your learning style and schedule. - Home Screen and Lock Screen widgets keep your daily word visible all day - Custom notifications help you build a consistent learning habit - Vocabulary quizzes help tailor the experience to your level - Save favorite words to review anytime BUILT TO KEEP YOU MOTIVATED - Small daily habits lead to real progress. - Streaks and progress tracking help you stay consistent - Daily challenges keep learning fresh - Engaging visuals and interactive features make vocabulary fun AWARD-WINNING AND TRUSTED - Over 7 million downloads worldwide - Best Mobile App Awards (August 2025) - Language expertise featured in Inc. Whether you’re preparing for exams like the SAT, GRE, IELTS, or TOEFL, working to improve your writing and speaking skills, or simply someone who loves words, Word of the Day helps you build vocabulary in a way that fits into your daily life. Read more confidently. Write with precision. Speak with clarity. Educate yourself in a small yet profound way with Word of the Day. Start your daily word habit today. Visit our website to learn more about the team and the app: https://vocabulous.us/ Please note that Word of the Day is a subscription-based app. Some features are available to Premium subscribers only. Privacy Policy: https://vocabulous.us/docs/privacy.html Terms of Use: https://vocabulous.us/docs/terms.html

About

Vocabulary Builder by Atlas

Enhance your English vocabulary with a personalized, science-based approach. Master new words, phrases, and idioms through curated lessons, interactive exercises, and AI-powered explanations. Track your progress and stay consistent with daily reminders and widgets.

Highlights
  • Personalized proficiency test
  • Curated curriculum for all levels
  • Daily Word of the Day with illustrations
  • Personal vocabulary journal
  • Multiple practice exercise types
  • AI tutor for explanations and examples
  • Spaced repetition system
Features
Read full description

Atlas Vocabulary Builder is an app designed to help you grow your vocabulary, no matter what your proficiency level is. Created by language-learning experts and trusted by thousands of learners, Atlas offers a personalized, science-based path to mastering English vocabulary and building a library of thousands of new words, phrases, idioms, and expressions. WHO ATLAS IS FOR Atlas is perfect for learners who want a smarter, structured, and personalized way to grow their English vocabulary. It’s ideal for: - Self-learners who want to improve consistently and expand their vocabulary with thousands of new words - Students preparing for TOEFL, IELTS, SAT, GRE, and other exams - Professionals who want stronger communication skills for work - Intermediate and advanced learners aiming to sound more fluent and natural - Anyone who wants to master vocabulary with real context FEATURES PROFICIENCY TEST: START AT YOUR LEVEL Begin with a quick proficiency test and instantly receive content tailored to your level, from Beginner to Native-level (Super-Proficient). Your learning path adjusts as you progress. CURATED CURRICULUM FOR EVERY LEVEL - Follow a structured curriculum with carefully curated vocabulary for each proficiency level - Explore additional categories like Idioms, Phrasal Verbs, Academic Vocabulary, Business English, and Exam English (TOEFL, GRE, SAT, and IELTS) - Study with level-appropriate quizzes, progress tests, and module exams that reinforce long-term retention WORD OF THE DAY - Get a Daily Word of the Day - Read short, engaging articles using that word - See a custom illustration that makes the meaning easier to remember BUILD YOUR PERSONAL VOCABULARY JOURNAL - Save any word you encounter - Group words into custom lists - Create collections based on topics or goals - Revisit your words with smart practice tools POWERFUL EXERCISES TO PRACTICE Practice your vocabulary with the exercise types that work best for you: - Flashcards - Gap-fill sentence completion - Definition matching - Spelling practice - Dialogue gap-fills - Meaning-from-context challenges ATLAS AI TUTOR Ask anything and get: - Clear explanations in simple English - Natural example sentences - Collocations and word partners - Short dialogues using your words - Context-rich alternatives and synonyms Your own personal language coach – available anytime. REMINDERS & WIDGETS TO STAY CONSISTENT - Set daily reminders - Add Home Screen widgets SMART SPACED REPETITION SYSTEM - A unique spaced-repetition algorithm strengthens retention by presenting personalized exercises designed just for you - Gradually takes you from simply recognizing vocabulary to using it accurately and confidently in real sentences TRACK YOUR PROGRESS - Monitor your vocabulary growth - See how many words you’ve mastered - Complete sets, tests, and modules to advance through levels WORLDWIDE VOCABULARY CHALLENGES - Compete with global learners in themed vocabulary challenges. - Discover new topics every week and stay motivated with fun, community-driven learning WHY YOU’LL LOVE ATLAS - Designed by language-learning experts - Great for exam prep - Helps you write and speak more clearly - Makes learning vocabulary enjoyable, structured, and personalized Your vocabulary-building journey starts here. Download Atlas Vocabulary Builder and unlock your true language potential. Subscription and Pricing: If you choose to purchase, payment will be applied to your iTunes account at confirmation of purchase. Subscriptions will automatically renew unless canceled within 24 hours before the end of the current period. You can cancel anytime with your iTunes account settings. Any unused portion of a free trial will be forfeited if you purchase a subscription. Subscriptions can be deactivated at the following link: https://support.apple.com/en-us/HT202039 Privacy Policy: https://www.atlasvocabulary.com/privacy-policy Terms of Use: https://www.atlasvocabulary.com/terms-of-use

Screenshots

Word of the Day・Vocabulary4 screens
Vocabulary Builder by Atlas4 screens

Verdict

The call

Word of the Day・Vocabulary and Vocabulary Builder by Atlas both sit at 4.7 stars, but that hides the real split: 73% of Vocabulary Builder by Atlas's written reviews are positive against 63% of Word of the Day・Vocabulary's. Word of the Day・Vocabulary's advantage is ratings volume (39K vs 12K). On price, rating, update cadence and ads 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. Word of the Day・Vocabulary sells 11 in-app purchases, starting at $7.99 per 7 days and Vocabulary Builder by Atlas sells 10 in-app purchases, starting at $4.49 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Word of the Day・Vocabulary against 4.8 for Vocabulary Builder by Atlas. Both are backed by a comparable volume of ratings — 39K and 12K respectively. Written reviews are what separate them: 63% of Word of the Day・Vocabulary's written reviews are positive against 73% of Vocabulary Builder by Atlas's.

UpkeepUpdate frequency

Word of the Day・Vocabulary ships an update fortnightly, Vocabulary Builder by Atlas every 2 weeks. Both last shipped on September 24, 2026.

Scorecard2 real differences · 8 level
Word of the Day・Vocabulary versus Vocabulary Builder by Atlas: the parameters behind the verdict, then further details
ParameterWord of the Day・VocabularyVocabulary Builder by Atlas
PriceFreeFree
Rating4.7 (39K ratings)4.8 (12K ratings) — better
Positive reviews63.3% of reviews73.4% of reviews — better
Number of ratings39K — better12K
Update frequencyFortnightly — betterEvery 2 weeks
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.016.0
Further details — not scored
Size188 MB211 MB
Age rating4+4+
DeveloperVocabulous US Inc.SAYAN YAZILIM TEKNOLOJI ANONIM SIRKETI

Customer experience

Word of the Day・Vocabulary

All ratings38,854 ratings
Positive92.4%
Neutral2.9%
Negative4.7%
Written reviews1,281 reviews
Positive63.3%
Neutral7.4%
Negative29.3%

Vocabulary Builder by Atlas

All ratings12,333 ratings
Positive94.5%
Neutral2.8%
Negative2.7%
Written reviews458 reviews
Positive73.4%
Neutral8.5%
Negative18.1%

User reviews

Word of the Day・Vocabulary

From 39K App Store ratings

What we love

  • 👍 Easy to learn new words
  • 🎨 Lovely illustrations
  • 🔊 Good pronunciation examples
  • 💡 Ability to save favorite words
  • 🗓️ Ability to view past words

Room to improve

  • 💰 Expensive subscription
  • 🔒 Lack of free features
  • 🙄 Intrusive ads
  • 🤔 Odd word choices and example sentences
  • 🐛 Buggy notifications and app crashes

Vocabulary Builder by Atlas

From 12K App Store ratings

What we love

  • 😍 Amazing app
  • 👍 Helpful for learning vocabulary
  • 🚀 Engaging and effective learning experience
  • 💡 Useful features like flashcards and quizzes
  • 🎉 Improved vocabulary and language skills

Room to improve

  • 💰 Expensive subscription
  • 🔒 Limited free features
  • 🐛 Occasional bugs and glitches
  • 🤔 Inaccurate word definitions or examples
  • 📚 Repetitive content and lack of customization

Bugs and requests

Word of the Day・Vocabulary

Reported bugs

4 issues
  • Notifications not working properly
  • App freezing and crashing
  • Saved words disappearing after updates
  • Incorrect pronunciations and definitions

Requested features

5 requests
  • More advanced vocabulary options
  • Ability to search for and save words
  • Improved word retention and learning tools
  • Landscape mode support
  • Better customization options

Vocabulary Builder by Atlas

Reported bugs

4 issues
  • Incorrect word definitions or synonyms
  • Automatic submission issues in fill-in-the-blank exercises
  • Inconsistent performance on different devices
  • Syncing and login problems across multiple devices

Requested features

5 requests
  • Add a skip/bypass option for known words
  • Improve the word journal and review features
  • Provide more example sentences and usage contexts
  • Implement a listening/pronunciation feature
  • Allow users to import/export word lists

In-app purchases

11 purchases

Word of the Day・Vocabulary

Subscriptions9
  • Weekly Subscription3 Days trial$7.997 Days
  • Monthly Premium$9.991 Month
  • Monthly English Dictionary$9.991 Month
Show 6 more
  • Trial 7 Days Annual Premium7 Days trial$39.991 Year
  • Annual Premium$49.991 Year
  • Trial Premium Word of the day3 Days trial$49.991 Year
  • Word of the Day Premium7 Days trial2 variants$49.991 Year
  • Word of the Day Premium7 Days trial2 variants$59.991 Year
  • Annual Premium Word of the Day$99.991 Year
One-time2
  • Lifetime Premium$19.99
  • Lifetime Premium$29.99
10 purchases

Vocabulary Builder by Atlas

Subscriptions8
  • Atlas Monthly$4.491 Month
  • Atlas Premium Monthly$6.991 Month
  • Atlas Monthly Plan$6.991 Month
Show 5 more
  • Atlas Premium (1 Month)$9.991 Month
  • Atlas Yearly3 Days trial$10.991 Year
  • Atlas Premium Yearly$19.991 Year
  • Atlas Yearly Plan3 Days trial$34.991 Year
  • Atlas Premium (1 Year)3 Days trial$49.991 Year
One-time2
  • Atlas Premium$36.99
  • Atlas Lifetime Plan$74.99

Questions

Is Word of the Day・Vocabulary free?
Word of the Day・Vocabulary is free to download, with in-app purchases available.
Is Vocabulary Builder by Atlas free?
Vocabulary Builder by Atlas is free to download, with in-app purchases available.
Which has better reviews, Word of the Day・Vocabulary or Vocabulary Builder by Atlas?
Vocabulary Builder by Atlas is rated higher. Word of the Day・Vocabulary averages 4.7 out of 5 from 39K ratings, while Vocabulary Builder by Atlas averages 4.8 from 12K ratings.
Do Word of the Day・Vocabulary or Vocabulary Builder by Atlas have ads?
Both Word of the Day・Vocabulary and Vocabulary Builder by Atlas show ads.
Which is updated more often, Word of the Day・Vocabulary or Vocabulary Builder by Atlas?
Word of the Day・Vocabulary ships an update fortnightly, and Vocabulary Builder by Atlas every 2 weeks. Most recently, Word of the Day・Vocabulary was updated on September 24, 2026 and Vocabulary Builder by Atlas on September 24, 2026.

Other comparisons