I'm looking to purchase Android tablets for the MIT App Inventor for a class. I'm looking to purchase the Kindle Fire 7 (maybe 8/9/10). The students will only be using it to test their apps outside of the simulator. I've been reading a few posts that there have been issues with the Kindle Fire tablets, but nothing formal from MIT saying that Fire OS is NOT compatible with App Inventor. I have also not been able to find a formal list of all the current tablets that are (are not) compatible with App Inventor. Must the tablet OS be Android or can it be Fire OS (or other flavors of Android OS, like Fire OS) ?
Are there any reasons why NOT to get the Kindle Fire 7 for middle school students?