Try Wispers Access

Wispers Access lets someone share a private web app with you without ever putting it on the internet — you connect through an end-to-end encrypted tunnel, using an invite instead of a URL. This page hands out invites to a live demo app share.

1. Install the Wispers Access app (App Store / Google Play).
2. Create your invite below.
3. In the app, scan the QR code (or paste the invite code).
4. Open the demo share — the page you'll see is only reachable through the tunnel you just set up.

The invite is valid for 24 hours and works once. Your demo access is cleaned up after about a day — come back for a new invite anytime.