Kioku Reader: Learn Japanese

Read Japanese. Hear it. Follow every word. Kioku brings Japanese text and audio together, with furigana, tap-to-look-up and karaoke-style highlighting. Read a passage, follow a song or practice with spoken Japanese, then save the words you want to remember. FOLLOW SONGS AND SPEECH Add audio to a note with matching Japanese lyrics or a transcript. Kioku aligns the text to the recording on your iPhone and highlights words as they are sung or spoken. • Follow along in a karaoke-style view • Tap a word to look it up, or tap a line to jump to it • Switch between the full mix, isolated voice and instrumental • Adjust word timing by hand when needed For the best results, use clear audio and text that matches what is actually sung or spoken. Alignment may need manual adjustments. Kioku is a reader for your audio and text; it is not a music streaming service. READ WITH SUPPORT • Paste or import Japanese text and add furigana • Tap words for definitions, readings, conjugation breakdowns and pitch accent • Look up conjugated forms without first finding the dictionary form • Adjust text size, line spacing and furigana to suit your reading FIND THE WORD YOU NEED • Use a Japanese–English dictionary offline after its initial download • Search in kanji, kana, romaji or English, including wildcard searches • Draw kanji you cannot type • Explore radicals, kanji details and stroke order MAKE NEW WORDS FAMILIAR • Save vocabulary while you read and organize it into lists • Review with flashcards and multiple-choice practice • Track review progress and turn on Word of the Day notifications ON YOUR PHONE, ON YOUR TERMS No account, analytics or tracking. Dictionary lookup, text alignment and audio transcription run on your device. Dictionary and audio features require initial dictionary or model downloads. Optional AI features can use Apple Intelligence or an external provider configured with your own API key. External providers receive the text you submit to them; their terms and any usage charges apply. These features are optional. Requires iOS 18 or later. Feature availability may depend on your device and configured services. Dictionary data from JMdict (EDRDG), used under Creative Commons Attribution-ShareAlike. Full attributions in Settings → About.