Technology is increasingly being used by humans with the aim of making life easier. In a man-made technology, there may be shortages. In this research, the technology to be studied is the Learn Qur'an Tafsir application. The reason why researchers choose this application is because the features in the Learn Qur'an Tafsir cover several themes that use references to the verses of the Qur'an along with their interpretation. Researchers will focus on one of the themes in this application, that is Private Law, which more specific to for the family sustenance law. This theme is important to discuss because sustenance is very crucial in a family. This research is a type of field research. The method used is a qualitative method. Researchers use epistemology to reveal the sources, methods, and validation of the Learn Quran application. The results of this research are first, the source of the Tafsir used is Ibn Katsir's Tafsir, Jalalin's Tafsir, the Indonesian Ministry of Religion's concise & complete interpretation, Tafsir Al-Azhar and Yusuf Ali Quran Translation from tanzil.net. These commentary books are credible interpretations to be used as references. Second, this application starts with 14 major themes, then divides it into the most specific sub-themes, then includes the verse. There is a repetition of verses with different themes in this application. Discussion of the theme with the steps taken by this application makes the resulting discussion less comprehensive. Third, this application does not provide information about the things that are contained in the verse and an explanation of the theme being researched. Apart from that, the connection between the verses that erase the big theme is also not found in this application. In terms of validity, this application is suitable for beginner users who need a description of the interpretation of the Qur'an on a particular theme.