Sumigo: Learn Japanese

Study Japanese your way with an offline dictionary, adaptive flashcards, focused learning paths, quick games, 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 FLASHCARDS AND LEARNING PATHS Review saved vocabulary with adaptive flashcards, or start with First 100 words in five small groups. Study kanji, grammar, and kana in separate paths. Choose what to practice, track progress, and set the length of each session. GAMES Practice your selected words, kanji, and kana in quick games. Catch the matching word, find the kanji missing from a Japanese word, or test your kana recognition. Build combos and see your score at the end of each session. KANJI • Explore more than 13,000 kanji with readings, meanings, and JLPT levels • Follow animated stroke-order diagrams • Practice writing kanji with a guide and optional writing grid • 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 Choose focused reviews when you want a quiet study session or optional games when you want a change of pace. Core study content works offline, and handwriting recognition works offline after a one-time model download. No account or ads are required.