I was more thinking about as something that should be baked into the “phone app” from my point of view. So when the phone rings, I’m seeing who calls, why is he calling and what amount of time would he need. If I’m missing the call, I would also see these info in the recent calls.
Do you have any smart home setup as of now? Asking because if you have a Hue Bridge or Home assistant running at homefor example, that could narrow the results.