Favorite Book Reader
FBReader SDK is a way to build your own app on FBReader engine. Light, stable, highly customizable.
The SDK for Android is already available. iOS version expected by the end of 2019.
FBReader 3.0.16 for Android and 1.0.10 for iOS available on Google Play and on the App Store, respectively.
The updates fix the position saving/restoring issues on both platforms.