Lock it. Wait for it. Vioo it.

Everyone in the group snaps photos into the same album — but nobody can see a single one until the moment you all agreed on. Then the whole group experiences the reveal together.

Get Started

How it works

Create or join an album

One friend hosts and gets a 6-digit code. Everyone else just types it in to join.

Snap photos in secret

Take photos straight from the app. The moment you save one, it locks — nobody can peek, not even you.

Wait for the reveal

The host sets a reveal time, or everyone can tap "I'm ready" and it unlocks the instant the whole group agrees.

Vioo it — together

Every screen unlocks at the same moment. Browse the gallery, share or save any photo, or download the whole set.

Get the best experience

Add Vioo to your home screen — it opens instantly, full-screen, just like a real app.

iPhone / iPad (Safari)

Tap the Share icon in the toolbar
Scroll down and tap Add to Home Screen
Tap Add — Vioo now opens like any other app

Android (Chrome)

Tap the ⋮ menu in the top right
Tap Add to Home screen / Install app
Confirm — Vioo now shows up on your home screen

Computer (Chrome / Edge)

Look for the install icon in the address bar
Click it, then click Install
Vioo opens in its own window, no browser tabs needed