TideGuard
A safety-first surf and kitesurf companion for the North Sea, Wadden and Baltic coasts that combines tide/current forecasts with a hazard layer for legacy infrastructure (old drilling platforms, harbor ruins like the former Bohrinsel in Pogum), session timers with auto check-in, and one-tap SOS that texts your last GPS fix to a designated contact.
Cold-water surfers and kitesurfers on the German, Dutch and Danish North Sea coast
- Hazard map overlaying rip-current zones, abandoned structures and known rescue black spots
- Session timer that requires a 'home safe' tap; otherwise auto-SMS your last GPS to a buddy
- Tide/current/wind forecast fused from multiple coastal APIs into a single 'go/no-go' rating
- Offline mode that pre-caches the next 12 hours of forecast and hazard data before you lose signal
A fatal incident at a former drilling platform in Pogum is a stark reminder that cold-water spots near legacy infrastructure are uniquely dangerous and currently not flagged in mainstream surf apps.
Real cold-water surf/kitesurf scene exists (Klitmoller/Cold Hawaii, Sylt, Fehmarn, St. Peter-Ording, Bergen aan Zee), but it is a niche of tens of thousands regionally; the Pogum fatal incident is verified and gives a clear why-now hook, but a single event is a thin demand floor.Rettungseinsatz: Surfer in Pogum tot aus dem Wasser geborgen ↗Kitesurfing in Germany - Best North & Baltic Sea Spots | VentoSurf ↗
NORDR is a very direct competitor (North Sea-only, Dutch/Belgian/Danish/East-UK, wave+wind+tide+buoy+custom alerts) and just launched in 2025–2026 with no ratings yet; however it explicitly disclaims safety ('not a safety device... local hazards may not appear') and has no hazard-layer/SOS/check-in, leaving a defensible safety niche.NORDR - Northsea Surf Forecast - App Store ↗Best Surf Forecast Apps 2026 | Top 5 Ranked & Compared ↗
NORDR proves willingness to pay in this exact niche (€2.99/mo, €17.99/yr, €49.99/yr Crew x5, €69.99 lifetime), but the EU cold-water surf addressable market is small and tide/forecast apps are mostly free with freemium conversion; SOS/check-in adds clear upgrade value.NORDR - Northsea Surf Forecast - App Store ↗
Cold-water / North Atlantic surfing is a multi-decade growth trend (wetsuit tech, Klitmoller/Cold Hawaii branding, post-pandemic outdoor adoption) and underwater-hazard awareness is a permanent safety concern, not a fad — but the niche is constrained by climate-driven sea-level/erosion changes that may shift the spots themselves.Surfing in Denmark - Cold Water Surf on the North Sea | Wave Safari ↗Surfing in Germany - North Sea & River Surf Guide | Wave Safari ↗
Tide/current forecasts (BSH, NOAA, tidal APIs) and GPS-based SOS are standard; the hard part is the proprietary hazard layer — there is no public registry of surf-accessible legacy infrastructure (drilling platforms, harbor ruins) for the Wadden/Baltic, so the geo-database must be manually curated, which is the core build cost.NORDR - Northsea Surf Forecast - App Store ↗