I want to send bulk notifications to the Android and IOS users. For Android I am using FCM (with high priority messages, so that to send to killed apps also) but in IOS, I must use pushkit or VOIP push notifications to send the updates event to killed apps also.
I need a FCM subscrptions/topics like concept in IOS so that I just need to send notification to only 2 groups - 1 for Android (FCM subscriptions ) and 1 for IOS.
Problems:
I can't find FCM subscription like for IOS in APNS.
I can't send Voip APNS via FCM because FCM may not support it as per the comments in the Does Firebase Cloud Messaging support VOIP pushkit services?