WeVyte

WeVyte is a group invite and messaging app. Users can quickly send invites to any of their contacts, even if they don't have the app. Guests can respond in-app or by text without having their phone blown up by group responses. You only get additional messages if you can go.

WeVyte lets you easily create groups for friends, teams, clubs, or other groups that regularly get together. It's easy to manage group members and plans without resorting to group texts. Try it out!