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I have some e-books, want to convert it to paid apps. Book is divided into no. of sections and each section should be purchased separately. Books contains question answers. So 1 section has 50 questions. Other sections are disabled till user purchases it. When the section is purchased, new content for that section should be downloaded from server. Server will have a database to store question answers.
Both applications for iOS and Android OS. I need more than 10 apps for 10 different books. Bid for 1 app now. It will be multiplied by no. of apps. So consider it as bulk deal. Also explain how payment will be processed.