Whatsapp dropped its support for iPod and iPad users in late 2011. This affected many users are they lost touch with other relatives who lived abroad and did not have access to other apps such as Viber and Telegram. The only way to install WhatsApp currently is through jailbreaking your iDevice, however, that goes against the Apple policy and does kill the waranty. Currently, Whatsapp has 1 billion users, suggesting it has money to develop the app to support iPads and iPod Touch's, therefore, why doesn't it do so?