Our Android app should work on any device running KitKat or above. But at the moment, we're only available in the US and Canada.

We're working on supporting more countries, but localization can be difficult -- we have to worry about things like foods and preparation methods that are local to a region, etc.

This is probably due to contry restrictions. I get the same "incompatible with all your devices" on the website, but "This item is not available in your country" in Google Play app.

Got the same on nexus 5