Buku Ende Lengkap Offline is an Android application developed by Nimrod Studio. It is a comprehensive reference guide for the Batak Christian Protestant Church's hymnal book, Buku Ende. The application is available for free and is compatible with Android 9.0.

The application is an excellent resource for those who want to access the hymnal book offline. It offers an extensive library of hymns and includes a note-taking feature, allowing users to make their notes while reading. The application is designed based on the reference book, Buku Ende HKBP. Overall, Buku Ende Lengkap Offline is a useful tool for those who want to have access to the hymnal book, Buku Ende, on their mobile devices.