This is visual interactive ebook for doing Tharpanam. This is basic version which is fully free and work offline (no internet is required). As Panchangam calculation is built in to the software you dont need to update or connect internet to get latest sangalpam. It is automatic. Kindly note that basic version include only Yajur Vedam. Basic version does not have voice mantra but for evaluation purpose, it will work for few mantras. There is Tharpanam Pro version which includes all features. It includes higly user interactive voice mantra ( not just an audio player) and all vedas ( Yajur, Rig, Sama, Sukla Yajur). Kindly purchase pro version to support developer. This is one time purchase and license is for life long for the google account. The settings page allows to input pithru data and this is used to generate full mantra for doing Tharpanam. Mantra includes "Sangalp", "Pithru Mantra","Mathamaha" and "Ending". The last used settings data are stored, so that it is available for next time. Kindly give storage permission for this purpose. The settings can be exported and backed up for future use or to transfer to other device.