Sumigo: Learn Japanese

Study Japanese your way with an offline dictionary, adaptive reviews, guided kanji and grammar practice, and classic stories—no account or ads required. Japanese dictionaries are good at telling you what a word means. They are not always as good at explaining when to use it. Sumigo helps with both. Alongside definitions, many entries include practical usage notes covering nuance, formality, similar words, and common mistakes. When you find a word you want to remember, save it and study it with the built-in spaced-repetition system. DICTIONARY • More than 200,000 Japanese–English dictionary entries • Search using kanji, kana, romaji, or English • Draw unfamiliar kanji directly in the search field • View furigana and complete conjugation tables for verbs and adjectives • Learn how words are actually used through detailed usage notes and examples ADAPTIVE REVIEWS Save vocabulary, kanji, and grammar from across the app. Unified learning sessions combine focused practice with smart review scheduling, while Japanese-to-English and English-to-Japanese vocabulary cards adapt separately to your progress. KANJI • Explore more than 13,000 kanji with readings, meanings, and JLPT levels • Follow animated stroke-order diagrams • Practice writing kanji by tracing each stroke • Study complete groups by school grade or JLPT level GRAMMAR Browse more than 800 grammar points from N5 to N1. Each entry includes its meaning, formation rules, explanations, and example sentences. EXAMPLE SENTENCES Read tens of thousands of Japanese sentences with furigana and English translations. Tap any word in a sentence to open its dictionary entry. JAPANESE STORIES Read classic folk tales such as Momotaro and Urashima Taro. Follow the Japanese text with line-by-line audio, word lookup, and English translations. MADE FOR FOCUSED STUDY Sumigo has a calm, paper-inspired design without streak pressure, ads, or distracting game mechanics. Core study content works offline, and handwriting recognition works offline after a one-time model download. No account is required. Whether you are looking up your first word or preparing for the JLPT, Sumigo gives you one place to read, study, and understand Japanese.