Today's Free App of the Day is Rotate and Roll
Originally $0.99

A physic based puzzle game. I love these kinds of games.

From the product page: Product Description Rotate your way through 40 challenging levels. Roll the balls to the bubble to progress. Use touch screen buttons to tilt the game to help the balls escape. Note that most of the negative reviews cite that the game is free on the developer's website.

37 of 72 reviews are four stars and above.

So we have a bonus pick: ISS Detector Free.

Thanks to KBoards member HappyGuy for the bonus app!

From the product page: ISS Detector will tell you when and where to look for the International Space Station or Iridium flares. You get an alarm a few minutes before a pass. You will never miss a pass of the International Space Station and you will never miss the bright flashes of the iridium communication satellites. ISS Detector will also check if the weather conditions are right. A clear sky is perfect for spotting.

61 of 68 reviews are four stars and above.

These apps are compatible with the original Fire and with my Fire HD 8.9" 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.

Have fun!

Also check out the other digital deals from Amazon, including great deals on MP3s and videos: