Mobile application is simple with texts (iOS) + Android

Simple mobile application with text phrases, paid for the user. Phrase directory (5-10 categories) + several text pages (about 10).
It has to work offline, that is, it has to work offline. All texts are downloaded once and stored in the application.
The ability to add a phrase to the favorites. The ability to share in SMS, email, social. networks. Can in the settings increase / decrease font
The design is simple, cute.