# 504 Essential Words-Vocabulary — 504 Words Learning & Practice > Vocabulary builder with stories, speech recognition, and spaced repetition for English learners. (iPhone/iPad app by Hassan Dehghan.) - Source: https://appshunter.io/ios/app/504-essential-words-vocabulary/id6756911337 (this page in markdown: same URL + `.md`) - Developer: [Hassan Dehghan](https://appshunter.io/developer/670451061) - Category: Education, Books - Price: Free with in-app purchases - Rating: 4.30/5 from 3 App Store ratings · 4 written reviews indexed - Age rating: 4+ - Requires: iOS 18.6 · 15 MB - Languages: American English, Persian - Released: 2026-01-07 - Data updated: 2026-08-18 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/504-essential-words-vocabulary/id6756911337/reviews.md ## What is 504 Essential Words? Learn the 504 Essential English Words in a fun and effective way. 504 Essential Words Pro Game helps you master the most important English vocabulary through stories, listening practice, pronunciation training, and interactive games. Improve your English skills step‑by‑step with listening challenges, synonym matching, definition games, and the powerful Tick‑8 learning method designed to help you remember words faster and longer. 504 Essential Words-Vocabulary is the ultimate tool to master the 504 most essential English words—proven to appear frequently in IELTS, TOEFL, academic texts, and everyday communication. Designed for serious learners, our app focuses on developing all core language skills: * Listening: Immersive stories with professional American and British narration. * Speaking & Pronunciation: Real-time speech recognition with instant feedback. * Reading & Comprehension: Contextual stories and highlighted vocabulary. * Writing & Retention: Tick-8 spaced repetition method for long-term memory. Key Features: Learn the 504 most important English words • Story‑based vocabulary learning • Listening practice for every word • Pronunciation training • Synonym Match Game • Definition Match Game • Score tracking and progress system • Tick‑8 method to reinforce learning over 8 days • Clean and simple learning experience • Interactive games: Definition Match, Synonym Match, and more • Detailed progress tracking and performance statistics • American and British accent options • Offline access to all content Whether preparing for exams or improving daily English, 504 Essential Words-Vocabulary transforms vocabulary building into an effective, enjoyable experience. Start your journey to fluency today. PREMIUM SUBSCRIPTION - You can subscribe to get unlimited access to certain app features. - Subscriptions are billed weekly or annually at the rate selected depending on the subscription plan. All personal data is protected in accordance with the Terms of Use and Privacy Policy: https://amazing-knight-054.notion.site/Privacy-2d1a3a617a7b81d59ecef6a6e99394cc https://amazing-knight-054.notion.site/Term-2d1a3a617a7b81f5abb6e9ae9253dfc9 ## Key features - Master 504 essential English words - Engaging stories with narration - Speech recognition for pronunciation - Tick-8 spaced repetition method - Interactive vocabulary games - Offline content access - Progress tracking ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium Monthly Access | $8.99 | per month | | Premium Yearly Access | $49.99 | per year | ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/504-essential-words-vocabulary/id6756911337/reviews.md ### 3/5 — Dark mode issue *2026-07-24* Please handle the sentences color in dark theme ### 5/5 — Perfect app *2026-07-07* I had training with 504 several years ago, and it was an excellent experience. Recently, I found them again after all this time, and I'm so happy I did. The team is professional, knowledgeable, and genuinely cares about helping people improve. Their teaching style is clear, supportive, and motivating. It's great to see they still maintain such high standards. I highly recommend 504 to anyone looking for quality training and a positive learning experience. ### 5/5 — Good *2026-06-16* this app is good for learning English words ### 5/5 — Fantastic App *2026-01-08* Absolutely fantastic app for learning the 504 essential words! It's been incredibly useful for me— the interactive flashcards, example sentences with translations, audio pronunciations, and fun quizzes make studying enjoyable and effective. I can feel my vocabulary expanding every day without feeling overwhelmed. Perfect for busy learners; I study on the go and never forget thanks to the smart review system. If you're looking to boost your English confidently, this is the best tool out there. Great job, team! 5 stars all the way! ## Frequently asked questions about 504 Essential Words ### What is the short name for 504 essential words Pro Game? The short common name for 504 essential words Pro Game is 504 essential words. ### Does 504 essential words have ads? No, 504 essential words is ad-free, allowing for an uninterrupted learning experience. ### What is the pricing for 504 essential words? The app is free to download and use. Premium features are available via subscription, with options for monthly access at $19.99 or yearly access at $79.99, including a 3-day free trial for the yearly plan. ### What learning methods does 504 essential words use? It employs the proven Tick-8 spaced repetition method across 8 stages for long-term retention, alongside immersive stories and interactive games. ### Can I practice pronunciation with 504 essential words? Yes, the app features advanced speech recognition technology that provides real-time feedback on your pronunciation. ### Is 504 essential words available offline? Yes, all content within 504 essential words is accessible offline, allowing you to learn anytime, anywhere. ### How often is 504 essential words updated? The latest version is 1.1, and the app was last updated on April 23, 2026, indicating regular maintenance and potential feature additions. ### What age rating does 504 essential words have? 504 essential words is rated 4+, making it suitable for a wide range of users, including younger learners. ## Version history (last 3 releases) ### 1.2 — 2026-06-15 fix minor bugs add new localize ### 1.1 — 2026-04-23 Redesigned section Tick8 with an improved layout and user experience. Added support for a new app localization. Unlocked more lessons, now available with in-app advertisements. Fixed multiple bugs related to the vocabulary learning section. ### 1.0 — 2026-01-07 No release notes. ## More apps by Hassan Dehghan - [مفاتيح الجنان الكامل دعا](https://appshunter.io/ios/app/id1463455648) - [دیوان غزلیات حافظ](https://appshunter.io/ios/app/id6767829663) - [ChartAI – AI Trading Signals](https://appshunter.io/ios/app/chartai-ai-trading-signals/id6782312126) All apps by Hassan Dehghan: https://appshunter.io/developer/670451061 ## Related topics [hassan dehghan](https://appshunter.io/ios/topics/hassan-dehghan) · [cosential](https://appshunter.io/ios/topics/cosential) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-18.*