Kitab Futuh Al-Ghoib, also known as Fathul Ghoib, is a phenomenal spiritual book app that serves as a guide for those seeking to know more about the unknown. It is a legacy of Shultonul Auliya, a leader of the saints, and is a compilation of the teachings of Syekh Abdul Qodir Al Jaelani.

The app contains all 78 Syarah/Risalah of the book, which is aimed at helping individuals become aware of their true selves and to know their Creator better. The app is free to download and can be used offline, making it accessible even without an internet connection.

One of the app's notable features is the ability to change the background color according to the user's preference. It also has a quick title selection option on the right-hand side for easier navigation. The app is lightweight, taking up only around 4MB of storage space.

Overall, Kitab Futuh Al-Ghoib is an excellent app for those seeking spiritual guidance and self-discovery. It is a must-have for anyone interested in the teachings of Syekh Abdul Qodir Al Jaelani and the path towards knowing oneself and the Creator.