Just the other day I was telling a friend how the main CRM-like functionality I'm missing in my private life, is a way designate friends that I want to stay in

Just the other day I was telling a friend how the main CRM-like functionality I'm missing in my private life, is a way designate friends that I want to stay in contact with, and then nudge me if more than X days had gone by where I hadn't been in contact with a given person (via any of the chat or call apps I use).