|

GROMKA

Winner of SPORTTECH Skolkovo 2026

A service for creating viral light shows and engaging audiences at sports games and events

What is Gromka?

Imagine a stadium. A pre-match show, floodlights are off, and the flashlights of viewers’ smartphones begin to light up, flicker in sync with the music, ripple in waves, draw the logos of a favourite team. This is Gromka.Show

Gromka.Show will boost your event

Engagement

Viewers are engaged in the pre-match show and feel like a meaningful part of it

Virality

Viral videos spread across the internet regardless of match results

Marketing

After the show we display sponsor promos in the browser. Tests show on average 25% conversion from show participants

No equipment

Flashlights are already in every viewer’s phone

Works in three steps

1. QR code

Viewer scans QR code, browser opens, taps "Start"

2. Start

Raises their phone — their flashlight or screen become part of the show

3. Perks

After the show, they join giveaways and grab promos from brands

Technologies

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

What do we get?For whom?
Wow effect — Event organizers
Post-show giveaways — Audience
Post-event promo — Brands, artists
Game mechanics — Hosts

Pricing

Total
3,900$
Fixed price for the entire event