ResApp Health Limited announced SleepCheck, ResApp's direct-to-consumer smartphone application for the self-assessment of sleep apnoea, is now available in the App Store for iPhone in 36 countries. SleepCheck is a smartphone application that uses the microphone on an iPhone to record and analyses an adult's breathing and snoring patterns overnight. In a large clinical study, SleepCheck's algorithms were shown to accurately assess a person's risk of sleep apnoea when compared to a full sleep test. SleepCheck is a mobile medical application that is CE Marked in Europe and TGA approved for ARTG listing in Australia. Sleep apnoea is a common sleep breathing disorder where the person repeatedly stops breathing or has periods of shallow breathing during sleep. Globally, it has been estimated that 936 million people have sleep apnoea and up to 80% of people suffering from moderate or severe sleep apnoea are undiagnosed. SleepCheck version 1.3 is now available in English, German, French, Portuguese, Spanish and Italian and is available to purchase in the App Store for iPhone throughout Europe (including the United Kingdom), Australia, New Zealand, Hong Kong and Singapore. In addition to translations, SleepCheck v1.3 now saves the user's age, gender and neck size for easier repeat testing, and provides additional educational material on sleep apnoea, its symptoms and risks, and treatment options.