You can buy Kindle books on your iPhone by using a mobile web browser like Safari, and then read your purchased Kindle books in the Kindle app.

You can buy Kindle books on an iPad through Amazon's website instead of the Kindle app, which doesn't allow in-app purchases. Here's how to do it.

For less than the cost of buying one book a month, Amazon's Kindle Unlimited gives you access to millions of ebooks and thousands of audiobooks. My title is Senior Features Writer, which is a license ...