Simple Furigana is a fast and lightweight iPhone application designed to assist users in reading Japanese text. Developed by telethon k.k., this free app allows you to add Ruby Characters (Furigana) to Japanese text effortlessly.

With Simple Furigana, you can automatically annotate Chinese characters (kanji) in Japanese text with hiragana or romaji (latin characters). Whether the text is in vertical (tategaki) or horizontal (yokogaki) layout, this app supports both formats. Annotated text can be easily printed or shared with others.

One of the standout features of Simple Furigana is its app extension, which allows you to add furigana to selected text in Safari and other compatible apps. This means you can enhance your Japanese reading experience across various platforms. Additionally, you can even add furigana to entire webpages, making it easier to navigate the web in Japanese.

Simple Furigana does not require a network connection for annotation, ensuring that you can use the app offline without any limitations. It provides a convenient and efficient way to improve your Japanese reading skills, whether you're a beginner or an advanced learner.