We learned to control flashlights on any smartphone via ultrasound and turn the hall into a synced light show in time with the music. It does not matter which phone model it is, no internet and no app are needed.
The mechanic is as simple as possible: guests scan a QR code, tap “start”, raise their phones, and the whole hall flickers in a single rhythm. The host or DJ controls the light straight from the sound desk. More about corporate events and weddings.
There is a ready mechanic for any moment of the evening:
- “Light show to the music”, when the whole hall flashes to the beat, and afterwards guests vote for the next track
- “Light by groups”, when each group of guests lights up as it is announced, and in the finale the whole hall glows
- “Long-exposure photo zone”, when the flashlight itself draws a logo, a caption or a name in the photo
- and many more
And right after the show a chat, votes and prize draws open in the browser of every guest.
Very simple and very striking: from 10,000 ₽ per event for up to 100 guests, and you can run it as many times per evening as you like. See the price calculator and pricing article for a quote. Plus ready viral content that guests film themselves.
A short presentation: gromka.show/onepager-party
