It sure seems that way, according to Android Guys. They claim competing eBook apps such as Kobo and Aldiko don't appear in search results when using the Amazon Appstore on a Kindle Fire tablet. Additionally, eBook reader developer BlueFire claims that while his app is listed as Kindle Fire-compatible on the Amazon Appstore, it too fails to show up in search results on the device.

We've not heard of many apps mysteriously not showing up in the Fire's app list (presumably Amazon had lots of time to work on ensuring most apps on its store would be compatible) for a lack of compatibility, so if this does turn out to be true, we can probably assume that Amazon made a conscious decision to keep competitors' apps out of the hands of users.

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