HBO Now has launched on Apple devices in the US.The streaming service offers access to HBO's back catalogue, as well as new episodes of the latest shows including Game of Thrones, Silicon Valley and Veep.
HBO Now is priced at $14.99 per month, but a free trial is also available for users to try out.
Subscribers are able to view content through an iOS device or an Apple TV unit.
"HBO Now is the next phase of innovation at HBO," Richard Plepler, chairman and CEO of HBO, said last month.
"With this new partnership, a natural evolution for the network, we have access to millions of Apple customers who are used to getting their favourite apps immediately. Now, they can do the same with an HBO subscription."
Game of Thrones, Silicon Valley and Veep all return to HBO in the US on April 12.