Do you have a demo or some more insightful screenshots of what the app is? Even if I wanted to sign up to the site, I'd have to fill in a bunch of stuff to actually have a meaningful overview of the UI.

I appreciate you have two-way contact syncing with Google Contacts which is a big thing that's lacking in monica.

I also appreciate the Chrome Extension you mentioned. Is there deeper integration there, eg. do you allow me to back up / view data on my facebook friends through Dex?

What I looked for in Monica, and simply did not find, was a true single-source-of-truth for all my contact interactions, be those on Facebook, Twitter, Discord, SMS, Hangouts …. It's less a matter of wanting to keep in touch with people (I love being able to set reminders for specific things, but lacking a good UI I just end up making those in Google Calendar), and more a matter of being able to quickly find things I may have discussed with someone.

For example I talk to my girlfriend through all three of Messenger, Discord and SMS, and I'd like to be able to have a single history to sift through should I look for something she told me (groceries to get, an address / door code to remember, a photo she sent …).

Again, to me the selling point of these kinds of personal-service websites are to offload parts of my brain to software that is more efficient at the task. Notion does a great job being a generic note-keeping / database app. Calendar does a great job at helping me remember everything time-bound events. A personal CRM should do a great job at helping me remember everything there is to remember about another person / a relationship with that person.