MatriTotal

MatriTotal creates a personal web page for each couple's wedding invitation, with an animated envelope, background music, countdown, map with directions, dress code, photo gallery and gift list or transfer details. Guests can RSVP, including companions and dietary restrictions, and the guest list is built automatically as an Excel file. Invitations can be shared by WhatsApp and edited after sending, and stay online up to 6 months after the wedding.

It is a paid web service with no free tier. The listed price is US$25 as a one-time payment (pago unico), with local-currency pricing for many countries in Latin America. Web only, with no app.