Need ePub reader Android app

There are many open source epub reader in Github, and I need help to take one of those and make my own ebook with the following features: 1 - integrate with ParseServer for book retrieval 2 - integrate with Readium for book encryption / decryption 3 - integrate with payment gateway in ios and android platform for membership system 4 - make book flipping effect ( github code to be provided ) 5 - integrate with library for english procounciation checking 6 - integrate to Wechat for book sharing