- Comprehensive dictionary with over 180,000 words, 165,000 example sentences, and 6000 kanji entries
- Every word is marked as common, uncommon, or rare
- Ability to add personal notes to any dictionary entry
- Quickly identify transitive/intransitive word pairs
- Audio pronunciations of words and example sentences (Requires Nihongo Pro)
- Photo lookup (OCR) feature that allows users to look up words by taking a picture (Requires Nihongo Pro)
- Clippings feature that adds furigana or romaji to Japanese text pasted into the app, and allows users to tap on any word to see its definition without leaving the clipping
- Flashcard system that automatically generates flashcards from words looked up in the dictionary or pasted into the app, and learns what words users know to avoid repetition
- Built-in kanji flashcard decks up through Middle School
- Intuitive spaced repetition flashcard system for vocabulary and kanji drawing
- Level up flashcards by studying every day, with no penalty for missing a day of study
- Search using English, Japanese, or romaji, and supports searching for conjugated words in both English and Japanese
- Search for kanji using radicals and stroke counts
- Safari extension that adds furigana or romaji to webpages and allows users to tap on words to see their definitions within Safari (Requires Nihongo Pro)