Amiibo do have their use outside of Nintendo platforms thanks to an app named Amiibuddy found on the Android App Store. The app is only available on Android and costs 99 cents for you to buy. To use the app, turn on your NFC, then place an Amiibo behind your phone. Depending on which Amiibo you use, you will get different wallpapers for your phone, as well as a sound and a song based around that Amiibo. The app also has a tracking system, so you can find out where many of the Amiibo are available for you to buy.
Those are just some of the features found within the Amiibuddy. You can check out everything found in the app in the video above!