Furigana is an Android application developed by Akito that can notate Japanese Kanji with Hiragana or Romaji reading aids. The app requires an internet connection for Hiragana/Romaji conversion. It offers various features such as customization of text and reading aid's size, color, and position. The night mode feature provides better reading in the dark. Additionally, it accepts web page sharing from other browsers and captures the text for conversion. The full-screen reading mode is only supported by Android 4.4 or newer. Furigana automatically pastes the clipboard text into the app, making it easier to convert text. Furthermore, the app has a customizable Romaji conversion system (Beta). However, the Ads-supported version has a limit of 2000 characters for Hiragana/Romaji conversion.