Is this for iOS or Android? There is a different procedure for each.
If you get to a settings screen in the app and find a (?) help button, tap and use the search button and type "custom font" and you should get some info on how to install. But let me know if you need more guidance.
I have the same question. I am trying to install SBL Hebrew and SBL Greek. This is on my iPad with iOS 16.2. I have installed the fonts onto my iPad using the iFont app, but they are not showing up in my Flashcards Deluxe app. I tried using the share feature from iFont, but Flashcards Deluxe doesn't show in the list of apps to share to. Can you help?