WhatsApp top of iPhone apps chart
The hugely popular free instant messaging system WhatsApp Messenger is at number one again in the paid-for iPhone app chart this week.
The app allows cross-platform mobile messaging so people can exchange messages without having to pay for an SMS.
The Room by Fireproof Games finds itself at the top of the paid-for iPad chart, pushing Football app Fifa 13 by EA Sports into the number three position.
This week, BBC iPlayer has proved more popular than ITV Player in the free iPad chart, as they sit at numbers five and eight respectively.
Channel 4's 4oD is behind both, sitting in the number 10 slot on the same chart.
A number of well-established apps are on the iPhone free chart, such as Google Maps at number two, YouTube at number four and Facebook Messenger at number 10.