Any adv. networks for kindle / FireOS?

Lately I’ve been reading a bit about the new Kindle (plus there are more phones on FireOS, some info here ) and as they say it’s android compatible etc. If we were to build apps for kindle, could we use airpush/appwiz/senddroid SDKs or are there any special sponsors for kindle? Some solutions from amazon itself maybe?

and while I’m at it, can anyone enlighten me in short - fireOS 3.0 Mojito vs android, is it the same, will everything we build for android work on Fire, or are there feature/permissions compatibility issues, is it worth diving into this?

Amazon has its own SDK which pays for US-only traffic on a eCPM basis.