I’ve used Monica HQ a lot. I am building a similar tool but With AI (tm) https://meetemilia.com/
Currently struggling with actually giving it the personality you see on the website, or if it should be more of a tool. I hate the idea of humans having AI friends, partners, relationships, etc…
Anyway, the “personal CRM” space is filled with sales focused tools. They all connect to LinkedIn. What I like about Monica HQ is that it doesn’t follow this model. You can use it and get reminders and in general read about your family and friends so you don’t forget their names and life story next time you meet them. I suck at remembering these things, so to me it’s useful.