You aren't limited to the built-in stores. You can add any website that provides an . Purchasing books on ЛитРес book store - FBReader
For Russian-language readers, FBReader has a built-in integration with , the largest digital bookstore in Russia. fbreader gde skachat knigi
: You can browse, purchase, and download books without leaving the app. You aren't limited to the built-in stores
