Sure, you have other options to read Kindle books without a Kindle device:
* On the web or on your iPhone/iPad https://read.amazon.com/
* On Android: https://play.google.com/store/apps/details?id=com.amazon.kin...
* On the web or on your iPhone/iPad https://read.amazon.com/
* On Android: https://play.google.com/store/apps/details?id=com.amazon.kin...
PDF is an open standard, the Kindle format is not.
[1]: http://www.nytimes.com/2009/07/18/technology/companies/18ama...