As seen in your screenshots earlier, the font displaying 'Surah Al-Fatiha' & the sample text shown on the 'settings' page is what is desired by many users as it resembles widely used font for Quranic texts. Also you can see two different fonts in the 'index' page & 'favorites'.

Current version of the app uses a font similar to that shown on the 'index' page screenshot.

thank you. don't use images. And it might defeat search function.

1. KFGQPC Uthman Taha Naskh

"opentype font, is built based on Uthman Taha calligraphy (Calligrapher of Mushaf Al-Madina) by King Fahd Glorious Quran Printing Complex (KFGQPC). The font can be distributed freely for both commercial and non-commercial use, according to the license. One is not, however, allowed to modify the font or make derivative works upon it."

also, there are other fonts like Scheherazade & me_quran. (I'm unaware of usage rights, licences & distribution policies)
the Zekr project wiki page on Quran fonts might be useful