The event invite "app" with no app to install
Most invitation apps make your guests download something. Invitify is a webpage, guests open the link and they are in.
Most apps marketed as "event invite apps" require everyone, host and guests, to install something. That is a big ask for a one-time party. Guests who do not already use that app will either skip the install or RSVP through a separate channel, which defeats the purpose.
Invitify takes the opposite stance. The host signs up once on the web; guests never sign up at all. The invitation is a webpage, the RSVP is a form on the same webpage, and the entire flow happens in whatever browser the guest is already holding.
Why "no app" is the right architecture for invitations
An invitation only matters for a few weeks. Asking guests to install an app for something that short-lived has a high abandon rate. Studies of app-onboarding funnels routinely show 40-70% drop-off between "download the app" and "actually use it once." That is a lot of missed RSVPs.
The web is the right substrate because it is universal. Every guest already has a browser, every browser opens links, and the technology that powers modern web pages, responsive design, fast asset loading, smooth motion, is more than enough to deliver a beautiful invitation.
On the host side, the web also wins. You can manage your invitations from any device, phone, work laptop, tablet, without re-installing or syncing anything. The single source of truth is your account in the browser.