Invito is an app which helps you manage Invitees list for personal trips, events, meetings, parties, etc. Its also easy for the invitees to accept or decline the invite. You ask attendees to RSVP the event. The creator of the event can change the attendees status (going, tentative and not going). There is a option to record whether the attendees have paid the necessary contribution or not. One can create multiple events manage them.
The Invitees are required to register once using their phone numbers and not email id's.
Invito is all about making event invitees management easier.