Themes of his ghazals are the beloved, faith, and exposing hypocrisy. His influence in the lives of Iranians can be found in "Hafez readings" (fāl-e hāfez, Persian: فال حافظ), frequent use of his poems in Persian traditional music, visual art and Persian calligraphy.
This app includes some of his poetries, with english translation. Iranian people have special tradition that when they want to decide about something, and they are not sure about what to do, or they want to see what would happen in future, they will use Hafez Divan (book).
They talk with him virtually, and then open the book randomly and read that random poetry. They believe Hafez would answer their question. Beleive it or not, it works most of the times. This app tries to simulate this behavior.
Additionally, the app includes search functionality that you could search all Divan to find special Ghazal. The results would let you browse the Ghazal.