VocabSeed

VocabSeed helps you build vocabulary in 【English】 and 【Japanese】 through AI-generated practice sentences and spaced repetition. Browse the 50,000 most common words ranked by real-world frequency from subtitle analysis. Mark the words you don't know, and VocabSeed creates personalized review sessions with natural sentences generated by AI — so you learn words in context, not in isolation. KEY FEATURES - Frequency-Ranked Word Lists 50,000 words for English and Japanese, ranked by how often they appear in everyday media. Focus on the words that matter most. - AI-Generated Practice Sentences Each review presents a natural sentence containing your target word, along with a translation in your chosen language. No repetitive flashcards — every sentence is unique. - Spaced Repetition Schedule your next review from minutes to months. VocabSeed tracks when each word is due and reminds you at the right time. - Built-in Translation Tap any word or sentence to translate using the iOS native Translation framework. Supports multiple target languages. - Text-to-Speech Hear correct pronunciation with system voices. Choose from premium voices for each language in Settings. - Daily Reminders Set a daily notification time. VocabSeed only notifies you when you have words due for review. - Home Screen Widget See your due words count and next review time at a glance without opening the app. - Multi-Language Support Learn English or Japanese vocabulary. The app interface is available in English, Chinese (Simplified), and Japanese. - Privacy First All your learning data stays on your device. No account required. GETTING STARTED 1. Choose your learning language (English or Japanese) 2. Browse the word list and mark words you don't know 3. Tap Review to start a practice session 4. After answering, schedule your next review 5. Come back when notified — your vocabulary grows over time