The latest entrant in this genre is Hike, a communication app that offers both instant messaging and SMS under one roof. Developed by Bharti Softbank, a 50-50 partnership between India's Bharti Telecom and Japan's Softbank telecom provider, the app is the brainchild of Kavin Bharti Mittal.
On the bright side, each Hike user gets 100 Free Hike SMS every month to message those friends who aren't on Hike., which gets replenished each month and in case any friend joins the app on your request via SMS, you get 10 Free SMS extra and the company will also be awarding each user with 50 free SMS per month for each friend they have invited to Hike. Other ways of inviting friends are through Facebook, Twitter and email.
Also, as soon as you enter the app, an Inbox message welcomes you with a reward of Rs.10. Every time you successfully invite a friend via SMS you earn credit of an additional Rs.20. In order for you to earn rewards, your friends must download and activate the app soon after you invite them.