الأصول الأربعة عند الشيعة is an Android application developed by Abbas Abbas. It falls under the category of Education and Reference, specifically Books. The app is a compilation of four books that cover the principles of hadiths according to the Imami Shia. These books include Al-Kafi fi al-Usul wa al-Furu by Muhammad ibn Ya'qub al-Kulayni containing 16,199 hadiths, Tahdhib al-Ahkam by Shaykh al-Tusi containing 13,905 hadiths, Al-Istibsar by Shaykh al-Tusi containing 5,511 hadiths, and Man La Yahduruhu al-Faqih by Shaykh al-Saduq containing 5,998 hadiths.

The app is designed to work offline and allows users to search through all the volumes. The app's interface is user-friendly and simple, making it easy to navigate. Overall, الأصول الأربعة عند الشيعة is a great resource for those interested in studying the principles of hadiths according to the Imami Shia.