Anytime by InSeven

Anytime is a world clock for people, not places.

Anytime lets you share your local time with friends, family, and colleagues. As you travel, it automatically keeps your local time, and your contacts' times up to date, without you lifting a finger.

Your information is never shared publicly, and only your time zone name (e.g. 'Europe/Vienna') is ever sent to the Anytime servers, or shared with your contacts.