I created a real-time tool that shows you when there are two concerts at the same time/location on Ticketmaster & Bandsintown (and saves promoters from double booking disasters) using NextJs + Express

After months of late nights and way too many issues with the API limits, I finally shipped Phase 1 from Event Conflict Finder – a tool that immediately tells you when two (or more) events in the same city start cannibalizing each other’s audiences.

Live demo (100% functional): https://event-conflict-finder.vercel.app

Why I built this

I also help with booking shows. Last year I saw two promoters accidentally organize major competing gigs on the same night, half a mile apart… both shows died. No one had anywhere to look: “Wait, is anything else happening that night?” – so I decided to build it.

What it does now (Phase 1 – MVP but fully working):

• Type a city → see every upcoming Ticketmaster + Bandsintown concert on an interactive Leaflet map
• Instantly highlights scheduling conflicts with color-coded severity (red = disaster, yellow = risky, green = safe)
• Detects: • Double bookings for the same location • Same event listed on both platforms (automatically deduplicated) • Events <0.5 km apart with overlapping times • Custom time buffer (default 30 min)
• Freemium paywall is already live (Polar + Supabase) – 3 free searches, then email → unlimited subscription (mostly so I can see real usage data)