Completorium is an iPhone app developed by Benjamin Bloomfield, available for free in the Education & Reference category. This app offers a traditional compline office experience with Gregorian Chant. Users can immerse themselves in the serene atmosphere of compline through this application. Completorium aims to provide a peaceful and reflective end to the day for its users by incorporating ancient chants into their routine.

With Completorium, users can easily access and follow the compline office rituals, enhancing their spiritual practice. The app's focus on Gregorian Chant adds a unique element to the compline experience, making it a valuable tool for those seeking a moment of tranquility and connection.