Paperless Post Invitations is a free lifestyle application for iPhone users. This app is a comprehensive online invitation maker and event management platform that allows users to create, send, and track RSVPs all in the app. It offers a wide range of exclusive partner designs from Rifle Paper Co., Monique Lhuillier, Oscar de la Renta, and more, and allows users to choose from templates or upload their own envelopes, liners, stamps, and backgrounds for truly custom invitations. The app also allows users to design effortlessly with modern, customizable, animated invitation templates, add stickers and text effects, and upload their own photo, GIF, or video.

Moreover, with Paperless Post Invitations, users can send up to 50 free invitations with most designs, instantly track delivery, opens, RSVPs, and guests' day-of arrivals, and send event reminders and message guests. The app also offers hundreds of free designs for holidays, birthdays, or just because, and allows users to schedule sending in advance and track delivery and view responses. The app has been featured as Apple App of the Day and in Vogue, The New York Times, and Fast Company.

Overall, Paperless Post Invitations is an excellent application for those who want to create custom invitations and manage events effortlessly.