Blrt for iOS requires iOS 7.0 or above and works on the following iPads, iPhones and iPods:

• iPad 2
• iPad (3rd generation)
• iPad (4th generation)
• iPad Air
• iPad Mini
• iPad Mini Retina
• iPhone 4*
• iPhone 4S
• iPhone 5
• iPhone 5S
• iPhone 5C
• iPhone 6
• iPhone 6+
• iPod Touch (5th generation)

Blrt for Android OS requires a minimum version 4.0.3.