Lagu Sion Plus is a free Android app developed by SDA Media. It falls under the multimedia category and is specifically designed for music and radio lovers. The app contains various versions of Sion lyrics with their corresponding audio files that can be played offline. Lagu Sion Plus automatically saves every audio file that has been played before for later use. The app also features a search function to help users find specific lyrics.

In addition to the Sion lyrics, Lagu Sion Plus also includes several other materials with their audio files that are published periodically, such as morning devotions, Sabbath school, mission readings, and offering readings. The app is non-monetized and aims to serve as a blessing to many people as a means of listening to Hymnal songs or as music guidance during worship.

Although Lagu Sion Plus is not directly affiliated with GMAHK, the app is in line with the fundamental beliefs of GMAHK that are based solely on the Bible. The app aims to support GMAHK in fulfilling the Great Commission of Jesus Christ. However, the app developers acknowledge the limitations of the app and welcome constructive feedback from users to improve the app's functionality and content.