Well the HG-UV98 has an app that runs on the iPhone.?
The iPhone only allows apps in User-Space (BLE) not System Space (Bluetooth Classic) unless they are type accepted in their expensive qual program.
The HG-UV98?has an HC-NN variant. I know this to be true because i opened my HG-UV98 up and looked inside. It looks much like the HC-05 module. I doubt the they went through qual.
The danger is the it becomes the ¡°De Facto¡± standard. I left off the Latin because I didn¡¯t want to show off.