NOTE: THE APP REQUIRES A SUBSCRIPTION. EVERYBODY GETS A FREE 1 MONTH TRIAL. CANCEL AT ANY TIME, NO QUESTIONS ASKED. "World Clock is a fantastic native app that not only makes it easy to add all the time zones you care about and shows them on a map to better help you visualize the time differences, but helps you schedule meetings across time zones too."—THE NEXT WEB
Vocabulary tutoring is easy with two-column word lists. Vocapp Tutor is powered by Core Data so supports iCloud, Time Machine, printing, and flexible export formatting. Text-to-speech helps editing new words, or learning a foreign language.