The Old Testament of the Holy Bible by Igor Apps is a comprehensive guide to the first section of the Christian Bible. It is a free app available for Android users and falls under the category of Education & Reference. It is further categorized under Books for easy navigation.

The Old Testament is divided into five sections - the Pentateuch, the historical books, the poetic books, the Major Prophets, and the Minor Prophets. The app provides a detailed summary of each section and highlights the key aspects of the books included. It is written primarily in Hebrew, with a few small sections written in Aramaic. The app is an excellent resource for those interested in deepening their knowledge of the Old Testament.