Kindle for Android wants to train your brain along with serving as your go-to e-Reader.

Version 4.11, which is rolling out through the ay Store, brings in a feature called rd se, which pops up hints above words that Kindle thinks may be challenging. The goal is to give you confidence to read more difficult books, so you may finally tackle r ace or other oppressive tomes.

There’s more to make you feel at home in the world of books as well. en opening a new novel Amazon will pop up with an introduction that gives background an estimated read time. To see it again, you’ll need to head to the About This Book section in the sidebar.

The popular highlights feature is also here now, alerting you to phrases selections that other Kindle users have highlighted while reading. Of course this update comes with the usual round of bug fixes performance improvements, too.

The impact on you: If you’re not using the Kindle app as your main way to read books, it’s worth giving it a shot. It’s good at cross-platform syncing, so you can pick up your book continue from the same place across Android, iOS, Fire devices, of course dedicated Kindle readers. Amazon throws in these little tweaks from time to time that seem to really enhance the experience.