In September 2017 FBReader came to Apple phones and tablets.
FBReader for iOS is based on the same book rendering engine as the Android version. However, the app is written separately for iOS and is different from its Android older brother. The explanation of the differences varies. UI elements have been changed to be more iOSish. Some features are missing, and we intend to implement them in future releases. On the other hand, iOS version includes some improved features, and we will port them back to Android. Please, refer the comparison table
for more details.
The free version of FBReader for iOS has some limitations. The library size is limited to ten books, and online translators are disabled. You can upgrade to the full version for a fee.