The device works with Apple iOS devices with Bluetooth 4.0 (iOS 7 and above), i.e. iPhone 4s and above, iPad Mini, third and fourth generation iPad, iPad Air and fifth generation iPod Touch, and devices running Android 5.0 and above. You can download the app at the following links.
iOS: https://itunes.apple.com/us/app/humiditrak/id1079088449?mt=8
Android: https://play.google.com/store/apps/details?id=com.blustream.humiditrak