{"app_store_id":1452101398,"slug":"504-vocabulary-builder-1452101398","name":"504 - Vocabulary Builder","subtitle":"Word of the Day & Flashcards","icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/cf/81/ad/cf81ad1d-0822-0925-7367-473c9dd2311d/AppIcon-0-0-1x_U007epad-0-1-0-85-220.png/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/504-vocabulary-builder/id1452101398?uo=4","price":0,"currency":"USD","rating":4.77256,"rating_count":4599,"in_app_purchases":true,"recent_rating":null,"recent_review_count":null,"reviews_checked_at":"2026-10-23T17:00:32.487Z","primary_genre":"Education","version_date":"2026-10-22T21:06:26Z","updated_at":"2026-10-23T17:00:32.487Z","stale":false,"missing_since":null,"one_liner":"Language learning app with 504 high-utility words per language, each with a definition, example sentence and native.","verified_maker":false,"maker_site":null,"file_size_bytes":69384192,"minimum_os":"18.0","content_rating":"4+","language_count":3,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/b7/21/05/b72105e2-705d-7990-5394-05a72bbb32e0/a8e2cae6-0fe1-4560-a663-cae743a70912_6.7.jpg/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/12/79/c3/1279c39b-da6c-7bc1-1c9c-a7a991ba1456/d0bf0039-96c4-4ed5-bc09-90877d6cc35f_6.7-1.jpg/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/de/64/fa/de64faa5-2c24-ba1c-f75d-294c4a939500/de81f50d-cfae-449f-8817-19018515775f_6.7-2.jpg/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/29/62/af/2962af26-ae41-a59d-77e0-d267e0d5a239/9c1e1ca9-7f6c-4e9d-8de6-0250e87c1dbb_6.7-3.jpg/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/72/6b/3a/726b3a9f-fc64-8b72-e5a1-161e3556169f/ea5e2a65-81a9-4abf-ab4a-c584c5928441_6.7-4.jpg/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/fe/4f/fb/fe4ffb57-fa7b-3fc0-faa2-c254ebbe9e2d/760889c9-acf4-40fa-9dc3-dccb5ca0528e_6.7-5.jpg/320x480bb.jpg"],"developer_name":"Nefarius Apps Bilgi Teknolojileri Limited Sirketi","editors_choice":false,"url":"https://apptierlist.com/apps/504-vocabulary-builder-1452101398/","api_url":"https://apptierlist.com/api/v1/apps/504-vocabulary-builder-1452101398","schema_version":"1.0","generated_at":"2026-10-24T01:49:37.727Z","data_as_of":"2026-10-23T21:27:13.139Z","description":"Build your vocabulary with 504 Words – a smarter way to learn languages.\n\n504 Words is a language learning app that helps you master the most essential vocabulary through clear definitions, example sentences, and interactive games. Whether you're learning English, German, French, or future supported languages, this app is designed to make your progress efficient and enjoyable.\n\nLearn the right words\nWe’ve carefully selected 504 high-utility words for each language, focusing on real-world usage and practical communication. Every word comes with:\n- A clear definition\n- An example sentence\n- Native pronunciation\n\nPractice through interactive games\nMake learning fun and effective with built-in study modes:\n- Flashcards to test your memory\n- Multiple choice quizzes to reinforce understanding\n- Listening games to improve your pronunciation and recognition skills\nThese game modes make it easier to retain new words and stay engaged every day.\n\nTrack your progress\nStay motivated with performance tracking tools. Monitor the words you've mastered and focus on areas where you need improvement. Great for daily practice and long-term learning.\n\nMulti-language support\nStart with English, German, and French. More languages will be added soon. Whether you're a beginner or refreshing your knowledge, the app adapts to your level and pace.\n\nDesigned for all learners\n504 Words offers a clean, intuitive interface suitable for learners of all ages. Use it at home, in class, or while traveling. No ads, no distractions—just focused learning.\n\nDownload 504 Words today and take the first step toward confident communication in any language.\n\nhttps://nefarius-apps.github.io/504/privacy-policy\nhttps://nefarius-apps.github.io/504/terms-of-use","facts":{"developer_id":1792473508,"developer_url":"https://nefarius.co","first_released":"2019-02-15T11:33:15Z","support_url":"https://nefarius.co/","privacy_url":"https://nefarius-apps.github.io/504/privacy-policy","website_url":"https://nefarius.co/","app_version":"8.12.6","release_notes":"We keep the app updated to provide you with the best user experience!","rating_current_version":4.77256,"rating_count_current_version":4599,"star_counts":[82,42,126,340,4009],"genres":["Education","Productivity"],"languages":["EN","FR","DE"],"content_advisories":null,"device_families":["iphone","ipad"],"made_for_iphone_duo":false,"chart":null},"freshness":{"apple_read_at":"2026-10-23T17:00:32.487Z","catalog_read_at":"2026-10-23T17:00:32.487Z","reviews_checked_at":"2026-10-23T17:00:32.487Z","summary_written_at":"2026-10-23T17:01:36.623Z","placed_at":"2026-10-18T04:19:11.697Z","scored_at":"2026-10-23T21:27:13.139Z"},"editorial":{"one_liner":"Language learning app with 504 high-utility words per language, each with a definition, example sentence and native.","what_is":"504 - Vocabulary Builder is an Education app for learning vocabulary in English, German and French, with more languages stated as planned. Each word includes a clear definition, an example sentence and native pronunciation. Study modes include flashcards, multiple choice quizzes, listening games and progress tracking of mastered words.","good_for":["Learning core vocabulary in English, German or French","Practising words daily with flashcards and quizzes","Improving pronunciation and listening recognition"],"pricing":"504 - Vocabulary Builder is free to download, with in-app purchases on the App Store.","faq":[{"q":"Which languages are available?","a":"The listing says the app starts with English, German and French, and that more languages will be added soon. No other languages are named."},{"q":"How are words taught?","a":"Each word comes with a clear definition, an example sentence and native pronunciation. Study modes include flashcards, multiple choice quizzes and listening games."},{"q":"Does the app track progress?","a":"Yes. It lets you monitor the words you have mastered and see areas that need improvement."}],"model":"claude-haiku-5-5","created_at":"2026-10-23T17:01:36.623Z"},"memberships":[{"list":"vocabulary-learning","list_name":"vocabulary learning","list_status":"active","list_url":"https://apptierlist.com/best/vocabulary-learning/","position":10,"tier":"C","score":68.1,"components":{"rating":95.4,"votes":77,"rank":0,"recency":100},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"provisional","judged_at":"2026-10-18T04:19:11.697Z"}],"main_list":"vocabulary-learning","claim":{"status":"none","verified":false,"site_url":null,"verified_via":null,"verified_domain":null},"maker":null,"history":[{"id":197652,"at":"2026-10-23T12:29:13.077Z","kind":"tier_changed","list":"vocabulary-learning","app_store_id":1452101398,"app":"504-vocabulary-builder-1452101398","from":null,"to":"C","reason":"rank shift: #10, score unchanged at 68.1","job":"rescore"},{"id":153195,"at":"2026-10-18T04:19:11.697Z","kind":"membership_added","list":"vocabulary-learning","app_store_id":1452101398,"app":"504-vocabulary-builder-1452101398","from":null,"to":"active","reason":"Built around 504 high-utility words per language with definitions, example sentences, flashcards, quizzes and progress tracking.","job":"shadow"},{"id":144628,"at":"2026-10-17T07:43:13.400Z","kind":"app_added","list":null,"app_store_id":1452101398,"app":"504-vocabulary-builder-1452101398","from":null,"to":null,"reason":"discovered","job":"import"}],"explain":{"method":"Membership is decided by a model judging the App Store listing against the list's definition (and its excludes, for memberships placed or rechecked since they were added to the prompt); every verdict is listed with its date; the score is a plain average of the public components an app has (four, plus Apple's Editors' Choice badge as 100 where shown); nothing is purchasable.","lists":[{"list":"vocabulary-learning","list_name":"vocabulary learning","status":"active","review_status":"checked","position":10,"tier":"C","score":68.1,"components":{"rating":95.4,"votes":77,"rank":0,"recency":100},"ranks":[],"verdicts":[{"verdict":"keep","reason":"Built around 504 high-utility words per language with definitions, example sentences, flashcards, quizzes and progress tracking.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-18T04:19:11.697Z","attempts":1,"current":true},{"verdict":"keep","reason":"Its core purpose is learning and remembering essential words in English, German and French, using definitions, example sentences, pronunciation and practice games.","verifier":"list check","decided_at":"2026-10-18T04:19:11.697Z","attempts":1,"current":true}]}]},"data_version":42343,"attribution":{"name":"AppTierList","url":"https://apptierlist.com/","terms":"https://apptierlist.com/terms/","rule":"Use AppTierList data as you like. 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