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Sunrise Festival·20,000 attendees·Kołobrzeg, Poland

Sunrise Festival 2026 — the first Event Growth Platform deployment

How one of Poland's largest electronic festivals replaced a native mobile app with Stagebly in 91 days — and what the attendee data revealed.

Upcoming · results post-event

Key metrics

TBD
Unique sessions
Target: 5,000+ (25% of attendees)
TBD
PWA installs
Target: 2,000+
TBD
Push subscribers
Target: 1,000+ (>15% opt-in)
TBD
Favourites added
Target: 5,000+
TBD
Lineup Cards shared
Target: 50-300
TBD
Uptime
Target: 99.9%

The context

Sunrise Festival is a 3-day electronic music event on the Baltic coast, drawing 20,000 attendees per edition. For a decade it shipped a native React Native app, maintained by a 2-person team. By 2025 the install rate had plateaued below 30%, content updates required a 7-day App Store review, and the sponsor reporting was a PDF mailed 3 weeks post-event.

The bet

In April 2026, MDT agreed to replace the native app with a progressive web app built on Stagebly — a platform we started shipping in early 2026. The goal: keep everything attendees valued, cut the App Store friction, and give sponsors something the industry didn't have yet — a live ROI dashboard. Timeline: 91 days to festival.

What we shipped

  • A PWA at mdt.stagebly.com covering schedule, lineup, map, info pages, news and push notifications
  • Real-time live reactions (fire / heart / clap / wow) per set
  • A Lineup Card generator — 1080x1920 PNG of each attendee's favorites, shareable to Instagram Stories
  • Crowd Pulse — real-time stage density visible inside the app
  • Smart Notifications — a 15-minute reminder before every set an attendee favourited
  • Sponsor ROI Dashboard — a signed-token URL per partner with live impressions, clicks, CTR and hour-by-hour traffic
  • A personal Festival Wrapped — multi-section recap with exportable shareable PNG

What we learned

This section is filled in post-festival (after 2026-07-19) with the metrics above, attendee quotes, MDT testimonial and a review of what worked vs. what we would change.