Why This

Anything you put in your contact books belongs to all the apps that can see your contacts. What’s in your notes?

You are exposing not just your information, but those of your friends and business contacts.

Those who care are developing alternatives

https://arstechnica.com/gadgets/2018/06/apple-bans-developers-from-creating-selling-user-contacts-databases/

Getting Started

Maintenance mode

CRASH Space Blog Posts