iPhone, iPad or Mac
if you are using an iPhone, iPad or Mac, we recommend that you use the iBooks reading app from Apple (called Apple Books since iOS version 12).
Android Smartphone or Tablet
If you are using a Samsung galaxy or another Android smartphone or Android tablet, we recommend that you use the Helicon Books EPUB3 reader app.
If you are using a Kindle Fire, which is an Android tablet "under the hood", we recommend that you also use the Helicon Books EPUB3 reader app, but because the app is not available through the Kindle app market place, you will need to "side-load" it.
Full List of Supported Reading Apps
The full list of reading apps supported by Jellybooks can be found here.