Today's Free App of the Day is The Impossible Test Christmas
Amazon, you're killing me... 9 of 13 reviews are two stars or worse, only two reviews four stars and above. It's a kind of quiz game. One review says "Feels more like punishment than fun." But it is free.
So we have a bonus pick: Gemini App Manager.
This is a powerful app manager. I use it to see which apps are running in the background. It's probably overkill for what I use it for; it does lots of other stuff, too. 188 of 213 reviews are four stars and above.
These apps are compatible with the original Fire and with my Fire HD8.9 4G. To tell if an app works for your Fire HD or other Android device registered to your Amazon account, click on the above link and look on the right side of the web page. Amazon will tell you if it will work with your registered device.
Also check out the other digital deals from Amazon, including great deals on MP3s and videos: