The iOS version requires the iOS 2.2.1 update as a minimum. It is compatible with iPhones, iPads and iPod Touches.
Resident Evil: Degeneration was first released onto iOS devices on 24 April 2009. The 1.01.00 update was released on 28 June to include a segment of the film as its opening cutscene. Minor bugfixes were released on 9 July as the 1.03.00 update. On the 14th, a preview version - Resident Evil: Degeneration Lite - was released, though neither have been updated any further.