The app is free and provides users with an easy way to access the Punjabi translation of the Holy Book. It is available on Android and iOS platforms, and it offers a simple and user-friendly interface. The app is ideal for anyone who wants to read the Holy Book in Punjabi while on the go. However, it is important to note that the app should only be used for reading Sahaj Paath, and users should avoid reading any other part of the Holy Book. Overall, Shri Guru Granth Sahib Darpan is a great app for those who wish to read the Holy Book in Punjabi on their mobile devices.