新编赞美诗-400首离线版 is an iPhone application under the Education & Reference category. Developed by 明 徐, this free program is based on the Christian hymnal "新编赞美诗400首" (Red Book), offering lyrics, sheet music, and music playback functions. The lyrics scroll along with the music, facilitating easy learning and listening. It provides features like page flipping, search by number or song title, display options for sheet music or lyrics, bedtime timer, background and lock screen music playback, offline access to all songs, and a black/white theme switch.

This app caters to individuals interested in Christian hymns, offering a convenient way to access and engage with a collection of 400 hymns offline.