Contact Faces is a free iPhone app developed by Yariv Nissim. It falls under the category of Utilities & Tools and aims to help users keep their address book up to date with the most recent pictures from Facebook.

The app allows you to scan your contacts and download their profile photos from Facebook. However, it is important to note that Contact Faces will only work with contacts that have a valid Facebook field in your address book. This means that if you have not synced your contacts with Facebook or do not have Facebook profiles associated with your contacts, the app will not be able to retrieve their profile photos.

It is worth mentioning that if you had previously run Facebook Contacts Sync on iOS 10, your contacts would have already been updated with their Facebook profile photos. However, with the removal of this feature in iOS 11 by Apple, Contact Faces provides a convenient alternative to ensure that your address book remains fresh and visually appealing.