The Amazon Appstore is where Kindle Fire users go to get their apps, but it has some drawbacks compared to Google Play. especially in the number of applications. If you want to install an app on your Kindle Fire that’s outside of the Amazon Appstore, you’ll have to download it — here’s how.
First, you must enable the ability to install apps from unknown sources (those outside of the App Store). This process is slightly different depending on how new your Kindle is:
- For first or second generation devices, go to » Settings > Advanced > Device > Allow app installation and turn it on.
- Third and fourth generation Kindle owners should enable » Settings» > «Apps» > «Apps from unknown sources» .
- Owners of the latest fifth generation, turn on Settings > Security > Apps from unknown sources .

For the actual installation, you will need an APK (which stands for Android Application Package). Check out our guide on how to download APK files directly from Google Play. if you want to put an app from the Play Store on your Kindle Fire.
Warning: APKs can come from anywhere, and downloading them is not guaranteed to be secure. If you are trying to get paid apps for free or downloading apps with explicit content, be aware that they may harm your device.