Whatsapp has announced that it will be moving to a yearly subscription model for new users on iOS in a manner similar to other platforms such as Android, Blackberry etc...

By Ankit Mathur | March 20th, 2013

Google has allowed developers who provide in app subscription services to let users use a free trial of the subscription for a period greater than 7 days, after which the subscription is automatically purchased, if not cancelled.

By Ankit Mathur | October 10th, 2012