You can create permanent and dynamic groups of related people and companies in seconds. The permanent groups belong to each address book and are best for Friends, Family, Classmates, Clients, Services, and other similarly related contacts.
Dynamic groups work across all connected address books. They are best for contacts related by one or more attributes, such as a person's position (i.e., President, Sales manager), age (anyone over 18 years old), everyone in the same zip code, city, or state, all users of Gmail, and similar others.
Both types of groups are best to quickly find one or more of its members by perusing a shorter list of names, and for sending personalized emails, organizing events with RSVP invites, requesting contact info updates, printing shipping labels, sharing or importing related people, and completing other similar tasks.
Skrol manages address books from different accounts, such as Google and iCloud, or more than one account of the same type.
Each address book may have any number of groups specific to this book, and these groups may have the same names, such as Favorites or Family.
When you select the "All contacts" option, it combines contacts from different address books into a single list.
The image on the left shows the Group view with three address books, and their respective groups are collapsed. The tap on the arrow next to the name expands the group list.
The tap on the + icon under the avatars lets you create a new group for that account. The vertical three-dot menu next to the currently active "All contacts" group is a menu that lets you add, delete, and rename groups.