Kamus Jepang is a free Android application that serves as a translator for Indonesian and Japanese languages. It provides the users with the ability to translate words and phrases from one language to the other. However, to translate from Japanese, the app requires a Japan Keyboard.

One of the best features of Kamus Jepang is that it provides offline translation for words. Additionally, it offers online translation for longer sentences, but it requires an internet connection. Another useful feature is the ability to copy and share translations to other applications. Moreover, you can listen to the pronunciation of translated words or phrases with the Text to Speech feature. Lastly, the app's search function is incredibly fast and efficient.

Overall, Kamus Jepang is a reliable translator that can be used for both personal and professional purposes. It is easy to use, and its features make it a useful tool for anyone who needs to translate between Indonesian and Japanese languages.