Vocabulary Builder by Atlas

Vocabulary Builder by Atlas

Daily Word of the Day Widget

12K ratings
430 reviews
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • February 16, 2019
  • July 18, 2026

Features

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Vocabulary Builder by Atlas screenshot #10 for iPhone
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About

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.

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
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What users say

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+1

What's New in Vocabulary Builder by Atlas

7.14

July 18, 2026

Keep improving your English with Atlas! - Tutor AI is renewed with a fresh look and new options like usage notes and word comparisons - Fixed an issue where deleted words could still appear in widgets - Updated the large widget with a cleaner design - Various bug fixes and performance improvements

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Subscription plans

Atlas Monthly

Unlock all features and categories.

$4.491 Month
How to cancel Vocabulary Builder by Atlas subscription ⁉️
2

In-App Purchases

$36.99

Atlas Premium

Unlock Atlas Core Vocabulary Category.

Events

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English Idioms, Expanded

Learn 500 idioms with new practice exercises.

May 23, 2026 Jun 23, 2026

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New Category: Word Ultra

Master rare words like ludic & epithalamium!

Apr 26, 2025 May 27, 2025

Read more about Vocabulary: Job Interviews

Vocabulary: Job Interviews

Learn key interview words in this Challenge!

Apr 26, 2025 May 26, 2025

User reviews

繰り返しの妙

以前には確定的に答えられなかった英単語について、何度も形を変えながら繰り返し問われることで脳内に定着する仕組みになっている。結果すごい。面白い。

The free version is actually pretty good

I’m only subscribed to the free version of this app but it’s actually pretty decent considering it’s free. I like the fact that it provides at least 5 different vocabulary words, with descriptive definitions that are used in sentences and also provide an audio of how to pronounce the word correctly. After reading and learning about the definitions then you can take a quiz to test your knowledge. Once you successfully pass the quiz then you level up and start learning newer terms. It’s a good app with a really nice interface and design. It’s easy to use and I think the paid subscription is worth the money but I can’t afford to subscribe at this time. There is a free trial subscription but I’m not sure how many days it lasts.
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a small wish

I really like this App and almost use it everyday. I really miss the feature from the old version that allowed me to edit the definition and example sentence before adding a word to my Journal list. This allowed me to input the exact sentence I encountered while reading, along with the Chinese translation. Reviewing words this way made it much easier to remember their actual usage.

While I understand that quickly adding words meets the needs of some users, the old method provided a multi-layered approach that greatly helped with long-term memory. Would it be possible to add a toggle in the settings so users can choose between the "Quick Mode" and the "Classic Mode"? Thank you!
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Good game

I love it so far

Great app

I’ve already learned new words on the first use, a good sign for regular use of this app in the future. There are a few apps like this in the App Store, but this one is more affordable than the others and therefore I recommend it more. The price is perfectly fair for the knowledge 👍🏻 as a writer I’m excited to expand my vocabulary in a fun way like this.
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Developer apps

User experience

🐞

Reported Bugs

4 issues

Incorrect word definitions or synonyms

Bug

Automatic submission issues in fill-in-the-blank exercises

Bug

Inconsistent performance on different devices

Bug

Syncing and login problems across multiple devices

Bug

Requested Features

5 requests

Add a skip/bypass option for known words

Feature

Improve the word journal and review features

Feature

Provide more example sentences and usage contexts

Feature

Implement a listening/pronunciation feature

Feature

Allow users to import/export word lists

Feature

FAQ

What does the Atlas Vocabulary Builder app do?

This app helps users expand their English vocabulary through a personalized, science-based learning path. It offers curated lessons, interactive exercises, a daily word of the day feature, and an AI tutor to explain meanings and usage.

What are the key features of the vocabulary builder?

Key features include a proficiency test to tailor content, a structured curriculum for various levels, a personal vocabulary journal to save and group words, diverse practice exercises like flashcards and gap-fills, and an AI tutor for instant explanations. It also utilizes a spaced repetition system for better retention.

How much does the Atlas Vocabulary Builder app cost?

The app is free to download and use, offering a free tier of features. It also includes in-app purchases, suggesting that premium content or advanced features may be available for purchase.

Who is the target audience for this app?

The app is designed for a broad range of English learners, from beginners to native speakers looking to refine their language. It's particularly beneficial for students preparing for standardized tests like TOEFL, IELTS, SAT, and GRE, as well as professionals aiming to improve their work-related communication skills.

How does the app help with learning new words?

It employs a multi-faceted approach to vocabulary acquisition. Users start with a proficiency test, follow a structured curriculum, and engage with a daily word of the day. The app also offers various practice exercises and a smart spaced repetition system to reinforce learning and ensure long-term retention.