Shiv Tandav Stotram is a free Android app developed by Caliber Apps, falling under the Lifestyle category. This app is a 'stotra' or hymn that describes Lord Shiva's power and beauty. It was originally sung by the demon king Ravana, a great devotee of Lord Shiva.

The app has an easy-to-use interface with features like play/pause, fast forward/backward, repeat, and background sound of conch and bell. It also allows you to set the mantra as your ringtone or alarm tone. Additionally, you can chant along with the app while it plays. It works offline and is completely free. Overall, Shiv Tandav Stotram is a great app for those who want to chant mantras and seek Lord Shiva's blessings.