Unfortunately not. There is Aegis which is similar to Amber but I’m not sure which iOS Nostr apps support it.
Discussion
Hasn’t been the smoothest experience using Aegis. Some apps are chill with it (Olas, Oxchat), most of the IOS apps want that precious private key. I hope the day comes with IOS NOSTR catches up with Android. In the meantime, Damus is a great app.