If you're sick and tired of the constant exchange of emails to try and schedule a meeting or book an appointment, WhenWorks might be your ideal solution.

WhenWorks is an iOS app for iPhone or iPad that integrates with most calendar services.

As a host, you set up some event types and rules, then send out invitations. The recipients (called guests) receive the email invitation and can pick a suitable date and time from a web-based service - they don't need to be WhenWorks users themselves.

Once the guest picks a time slot, your calendar is updated and an email confirmation is sent out. Either the host or the guest can reschedule or cancel the appointment with just a few clicks. Want to have single point of contact without sending out invitations every time? You can make your available time slots public and send anyone a web link.

If you need to set up one-to-one meetings on a regular basis, WhenWorks can be a tremendous boon!