Sharing My Alarmclock With Another iPhone User

This would be such a handy application to share: amongst couples, coworkers, teammates…the list goes on. My husband needs reminders constantly. Presently, I have to set the alarm (or reminder) on his phone for him. He will NOT set them. Then, I perform the same exact procedure on my phone. It is tiring, to say the least! I would much rather set the alarm on my phone and share it with his phone somehow. Maybe an invite or something, and after he accepted it, the alarm would then become programmed onto his phone. Easy peasy? With so many intellectually driven folks in the Apple world, surely this can become a reality?