Sea Sparkle Predictor

Sea Sparkle Predictor for Homey Predicts bioluminescent sea sparkle (zeevonk) likelihood along the Dutch coast using real-time weather and sea data. Get notified when conditions are ideal to see the magical glow of Noctiluca scintillans. Features: - Prediction score (0-100%) based on 6 environmental factors - 17 Dutch coastal location presets, from Cadzand-Bad to Schiermonnikoog - Custom coordinates for any location - Smart polling: updates every 15 minutes during evening/night, every 2 hours during daytime - Sunrise/sunset-aware active window (sunset - 2h through sunrise + 2h) - Flow cards for automating notifications and smart home actions - Settings dashboard with live score breakdown and current conditions - 10-language support: English, Dutch, German, French, Italian, Swedish, Norwegian, Spanish, Danish, Polish - Zero external dependencies for minimal memory usage Prediction factors: - Season (25 pts) — peak in June-July, zero in winter - Sea surface temperature (25 pts) — optimal around 17°C - Wind speed (20 pts) — calm conditions preferred (< 12 km/h) - Wave height (15 pts) — low waves preferred (< 0.5m) - Cloud cover (10 pts) — clear skies for visibility - Warm streak (5 pts) — consecutive sunny days boost algae growth Flow triggers: - Likelihood changed — fires when score changes by 5+ points, with score, label, and location tokens - Likelihood crosses threshold — fires when score crosses above or below a user-set value Flow conditions: - Likelihood is above threshold - It is sea sparkle season (April - September) - Good viewing conditions (dark, clear skies, calm wind) Flow actions: - Force update — immediately refresh the prediction Data sources: Weather and marine data is provided by Open-Meteo (https://open-meteo.com), a free and open weather API. No API key required. Disclaimer: This app is intended for informational and entertainment purposes only. Actual sea sparkle occurrence depends on many factors including organism presence, water chemistry, and local conditions that cannot be measured remotely. This is a prediction tool based on environmental conditions, not a guarantee of bioluminescence. The developer assumes no responsibility for the accuracy, timeliness, or completeness of the prediction data displayed. Predictions may be inaccurate or incomplete.