OmArunachala is an universal application designed as an easy reminder for the important days of the Lord Shiva's sacred pilgrimage Thiruvannamalai. This application is created with the Lord's devotees and those who are interested in Hinduism or ancient India's culture, in mind. This app carries with it the most important dates of Thiruvannamalai and let the user add any such date as a reminder to the device.

Following list of dates can be viewed for the year 2013 with this app:
1) Girivalam (Mountain Walk)
2) Amavasai or Amavasya (Full Moon night)
3) Karthigai Deepam (Sacred day of the mountain itself; Considered the most important day of the temple and The devotees)
4) Pradosham (Sacred day of Lord Shiva)

The chanting within this app offers the divine chanting of Lord Shiva, which according to the ancient text, purifies the soul and increases the concentration of the enchanter. The devotees are advised to chant the Mantra while visiting Thiruvannamalai, Lord Shiva's city of sacrificial fire.