There is no app from Huawei for iPhone to change the default operation (double-tap left/right; press and hold) and update for firmware. Wear detection control doesn't work either, afaik. Apart from that, the Freebuds can already be connected with the iPhone (standard Bluetooth gezeedere) - simply without additional functions.
Have had the headphones for 3 days and they work perfectly. Good sound, easy to use and very good quality. Pairing with an IPhone should certainly work without problems. Since the Apple ones certainly connect to Android as well. :-)