The Call on Time app gives you an overview of all your contacts and their respective local times. On top of basic management functions such as creating, editing and arranging contacts in lists, the app automatically calculates time zones. Thus, it will warn you when trying to call someone at an inappropriate time, and will later, when the time is more convenient for the recipient, remind you of your intended call. The Call on Time app prevents you from uncomfortable phone calls with business partners, friends and family.