Looking for a CRM for people management (Family as well as networking)

Hey everyone!

I am hoping maybe one of you can help. I am looking for a CRM for personal use. I want to be able to keep track of my family interests etc birthdays and thensome I'll also use it for networked colleagues such as lawyers realtors and so on. Is there any cross platform suggestions you may have? I need it to function on IOS and Windows. This has been my main problem since I need that cross-platform support.

https://www.grocrm.com/ is my ABSOLUTE favorite but it's IOS/Mac exclusive however I like the intuitive design.