I just found a setting in my iPhone's *Security and Privacy* settings, and I cannot believe I didn't know about it but I'm genuinely impressed, and have turned it on now. I'm going to just paste the paragraph from settings:
*App Privacy Report* shows how often apps use the permission you’ve granted to access your data, like your location or microphone. It also includes a breakdown of each app’s network activity, website network activity, and the most frequently contacted domains.