Lightroom mobile is available for iOS and Android. Please see the details below:
Lightroom for mobile supports iOS7 and later running on iPad 2 and later, iPhone 4s, 5, 5s, 5c, and iPod Touch 5th Generation. Additionally, you need Lightroom 5.4 for Windows or Mac OS.
Lightroom for mobile supports phones running Android 4.1.x and later. Additionally, you need Lightroom 5.4 or later for Windows or Mac OS.
Ensure that the Android phone on which you want to install Lightroom for mobile meets the following system requirements:
Minimum system requirements
That was a big help. <S>