I thought about this topic a lot. In my humble opinion: a database is overkill. My solution: A simple spreadsheet and a reminder The spreadsheet has "contact

I thought about this topic a lot. In my humble opinion: a database is overkill. My solution: A simple spreadsheet and a reminder The spreadsheet has "contact every 3 weeks", "contact every 2 mos", "contact every 90 days". I have a reminder in my todoist app to look at the spreadsheet every 2 weeks. To track birthdays I used google calendar. I suppose if you have a who lot of friends that a database would be a better option. For me, I only track about 45 people and my system works just fine.