FloatPlan: Trip Companion for Danube River Cruise Passengers
A consumer app that shows booked cruise passengers exactly which ports, locks, and scenic stretches are at risk on their sailing, with daily push updates, alternative excursion suggestions, and a refund/credit tracker if the operator cancels a segment.
Travellers who have booked Danube or Rhine river cruises
- Itinerary risk view: tap your booking and see which days are flagged yellow or red based on current forecasts
- Daily push briefings in the passenger's language with what changed since yesterday
- Curated alternative shore excursions in each port that don't depend on low-water navigation
- Refund/credit tracker that flags what you're owed and emails the operator on your behalf
With record-low water disrupting Central European cruises and passengers receiving last-minute itinerary changes, travellers need a passenger-side tool that the cruise lines themselves rarely provide.
Multiple 2025/2026 reports confirm historic low water on Danube/Rhine forcing cancellations, ship swaps, and bus transfers during peak season — a clear, recurring pain point for booked passengers.Danube River Water Levels Force Cruise Cancellations And Ship Swaps ↗Low water levels on Danube and Rhine cause cancellations and itinerary changes ↗
Existing apps are either operator-owned (Viking Voyager, eVoyager) or generic ocean-cruise trackers (CruiseMapper); no independent passenger-side disruption/refund tracker for river cruises surfaced in search.Viking Voyager - App Store ↗Cruise Ship Tracker, Itineraries, Schedules, Deck Plans - CruiseMapper ↗
Demand is real but transactional: a river cruise is purchased every 2–5 years per passenger, the niche is small (hundreds of thousands of annual passengers), and cruise lines control the refund data — tough to convert pain into recurring revenue.Low Water Levels Force Cancellations & Adjustments to Rhine & Danube Cruises ↗Shore Excursions - higher quality cruise shore excursions at substantially lower prices ↗
Climate-driven low-water events are worsening, sustaining the problem, but if hydrology normalizes or major operators build native disruption features, the niche could erode within a few years.European River Cruise Water Levels: The Truth About Cancellations and Disruptions 2025 Guide ↗
Public hydrology feeds (e.g., German/Austrian waterway gauges) and cruise line itinerary scraping make core features buildable in months; main hurdle is correlating gauge levels with which specific sailings will be cancelled, which cruise lines won't disclose.Low water levels on Danube and Rhine cause cancellations and itinerary changes ↗