Jeff Bezos shows off the new Kindle Fire HD. AP Are you interested in buying the Kindle Fire HD?

You should know there's a reasonable chance not all your favorite apps will work on it.

The Fire is an Android-based device, but Amazon has heavily modified the software to remove all traces of Google. That means it has its own app store, not the official Google Play store that has tens of thousands of more Android apps to choose from.

Amazon's Appstore is also available on most other Android smartphones and tablets, but you'll have to install it directly from Amazon if you want to try it.

So what's missing from Amazon's Appstore? We rounded up the most important apps you won't be able to get.