Avtar Bani is an iPhone application that serves as the religious book of the Sant Nirankari Mission, outlining its key philosophy. Developed by Sant Nirankari Mission Inc., this free app offers the English and Hindi versions of Avtar Bani, allowing users to add notes and save bookmarks for their favorite verses. Additionally, users can customize their reading experience by adjusting font size and background color. The app also provides a live news feed from Nirankari.org, enhancing the spiritual journey for its users.

The app contains 376 hymns that delve into the qualities of Formless God, the significance of a True Spiritual Guide, the purpose of human life, fundamental principles, true devotion, and leading a saintly life. While the Avtar Bani is not worshipped as a holy book, it holds immense value among Nirankari devotees for its profound insights and authenticity.