Futuhul Gayb is an Android application developed by ALPER ALP, which falls under the category of Education & Reference and the subcategory of Books. The app provides access to the Turkish book with the same name, which translates to "Revelations of the Unseen."

The app's interface is simple and easy to use, with a straightforward menu that allows users to navigate through the book's chapters. The text is clear and legible, making it easy to read, and the app's functionality allows users to bookmark their favorite pages for easy access.

Overall, Futuhul Gayb is a useful app for those interested in reading the Turkish book of the same name. The app's simple interface and easy-to-use functionality make it a great tool for readers looking to delve into this spiritual text.