Kioku Reader

Kioku turns Japanese audio and text into something you can read along with. FOLLOW ALONG • Add a song or recording to a note and Kioku times every line and word to the audio, on your phone, with no account and no upload • Karaoke-style lyrics view: the current word lights up as it's sung or spoken • Tap any word mid-song to look it up; tap a line to jump to it • Switch between the full mix, the isolated voice, or the instrumental • Fine-tune any word's timing by hand READ • Paste or import text and get instant furigana • Tap any word for its dictionary entry, conjugation breakdown, and pitch accent • Smart segmentation understands conjugated forms — tap できない, see できる • Adjustable typography: text size, line spacing, furigana size and gap LOOK UP • Complete offline Japanese–English dictionary • Search by kanji, kana, romaji, English, or wildcards • Handwriting input for kanji you can't type • Radical search and kanji details with stroke order STUDY • Save words while you read and organize them into lists • Flashcards and multiple-choice review with progress tracking • Word of the Day notifications PRIVATE BY DESIGN • No accounts, no analytics, no tracking • Alignment, transcription, and the dictionary all run on your phone • Optional AI features use Apple Intelligence or your own API key Dictionary data from JMdict (EDRDG), used under Creative Commons Attribution-ShareAlike. Full attributions in Settings → About.