"كتاب كيف تسعدين زوجك" or "Learn How to Keep Your Husband Happy" is an Android application developed by Ahmed App. This app falls under the category of Education and Reference with a subcategory of Books. The app offers an 80-page book that narrates the secrets of a happy married life and how to maintain a strong relationship with your husband.

The book emphasizes the importance of a healthy relationship and how to avoid infidelity and other problems that may arise in today's world full of temptations. It provides useful insights and tips for women who are about to get married or for those who want to improve their relationship with their husband. The book is easy to read, and the app offers a smooth transition between its pages, making it a user-friendly experience.