Please make sure that your iOS device is running iOS version 8.0 or newer. You can check that in the phone's settings -> general -> About -> Version. The Chipolo only works with iOS devices running iOS version 8.0 or newer and Bluetooth 4.0 built-in.
If you are trying to download our App on the iPad, please make sure to search under iPhone (mobile) applications.
Please read the officially supported device list to make sure your device is compatible.