Kindle vs the Kindle app: which should you use?
You do not need a Kindle device to read Kindle books — the app works on phones, tablets, and computers. But each setup suits a different reader.
Choose the app if you read in snatches
The Kindle app is perfect for commutes, waiting rooms, and lunch breaks. Your place syncs across devices, so the book you started on your phone is waiting on your tablet.
Choose a device if you read long and often
E-ink screens are easier on the eyes for hours-long sessions, and devices are lighter than any paperback stack. If you read more than a few books a month, the upgrade pays for itself.
Either way, the books come from the same place — start with free titles and build your library before deciding what to read them on.