Flashlight light show at concerts and festivals
The audience’s flashlights pulse to the music and become part of the number. The artist or DJ controls the light from stage, the hall turns into a living set. No app, runs in the browser. Moscow and across Russia
Technologies
A synchronized show from viewers’ phones: each screen and flashlight becomes a pixel of the shared picture
Works in the browser, no app download required
Works on whitelists, even when the internet is blocked
Flashlight sync without internet via ultrasound, no load on the mobile network
Mapping the picture from flashlights by row and seat or by geolocation
Pricing
Total
3,900$
Fixed price for the entire event
Why not wristbands or drones
- LED wristbands like Coldplay’s: buying thousands of units, handing them out at the door and collecting them after. Coldplay spends around 400,000 euros on wristbands per concert
- Drone show: open sky only, weather-dependent, permits required, at least two weeks of preparation
- GROMKA.SHOW: the “wristband” is already in every viewer’s pocket, no preparation needed, and after the show viewers get a promo and prize draw right in the browser
Case studies
Flashlight light show at Nikolay Grinko’s concertThe audience’s flashlights flickered to the music and became part of the concert numberRead
A DJ controls the room’s flashlights live: a test at RetroBunker FestAt DJ Tonio’s set the room’s flashlights were controlled straight from the pads, to the musicRead
Immersive light show in a theatre: the play “A Romance with an Emigrant”The audience at TChK Theatre became part of the play: phone flashlights turned the hall into a light stageReadFAQ
- Do viewers need to install an app?
- No. Scan the QR code and open the page in a browser. Works on iPhone and Android
- Who controls the show?
- The sound engineer, DJ or artist – anyone with access to the sound. We prepare the script and control tracks in advance
- Does it work outdoors?
- Yes. Flashlights are visible in any lighting; for large venues we map by sector
- How many viewers can take part?
- From a small hall to tens of thousands at an arena. Price depends on audience size
- Is it like the wristbands at Coldplay concerts?
- The effect is the same: the hall becomes a single field of light. The difference is there is no equipment to buy and hand out, viewers already have phones. A QR code on screen replaces the wristband logistics