Sorry to burst your bubble, but WhatsApp has moved to a yearly model on iOS too. You might have been plain lucky, but WhatsApp is now available for free on iOS for the first year and $0.99 per year after that (just like Android).
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?