Our packaging does state “Made for iPod, iPhone; and iPad.” but if you look at the same part of the package, it also says “Also works with most smartphones and tablets with a micro-USB port or USB Type-C Port*, including: Nexus, Samsung, HTC, LG and Motorola.”
We have tested the products here, as long as the smartphone is OTG compatible (and most modern Android phones are), it will work.
Here’s a list of Android devices that we know it works with. This is not a complete list, but it will give you a good idea of compatibility.
For further assistance, please contact Picture Keeper Support