No one can currently test for RID using an iPhone.
The current best app,
Drone Scanner, which finds the most RID-transmitting drones out of all the other apps, works only on Android OS. I imagine not all Android-based phones would work either, as it may depends on how locked down the phone is.
Most, if not all, RID, is WiFi based, and Apple, for some unfathomable reason, does not allow these apps to access the WiFi hardware in their devices. Countless other third-party apps have access to the WiFi module in iPhones, the main one being WiFi Scanners, so I don’t understand why these drone scanning apps are not allowed to access the module.
However, technically you do not need any app if you just want to test if your drone is transmitting RID using both an iPhone and Android. If you open your WiFi settings and see the list of available WiFi devices, the RID drone is supposed to show up on the list with the name being “RID-1581“ followed by the rest of the serial number.
iOS phone WiFi settings page example.
Android phone WiFi settings page example.
Having said that, I have never seen my
Air 3’s RID WiFi broadcast using my iPhone 13 Pro Max’s WiFi Settings page.