Many of the devs I know aren't, but then they haven't put much effort into Amazon. Amazon App Store is basically Amazon Fire tablet users only. The Amazon Pho

Many of the devs I know aren't, but then they haven't put much effort into Amazon. Amazon App Store is basically Amazon Fire tablet users only. The Amazon Phone has barely sold so can be discounted for right now. Other than that, the folks who install the Amazon store... which requires manually enabling 3rd party apps on your Android phone and then installing it... are folks looking to get the free apps Amazon gives away to get people to use their store. So, not only is it a much smaller audience, it isn't necessarily the best quality audience. That's what I've heard anecdotally at least.