# LazySurfer

LazySurfer is a personalized surf forecasting app for iOS and Android that learns from a surfer's logged sessions and uses NOAA buoy data to predict when local spots will match conditions they've rated highly in the past.

## What it is

- A surf forecasting and digital surf log app for iOS and Android.
- Uses real-time data from NOAA National Data Buoy Center (NDBC) buoys and NWS wind stations — not resold third-party forecasts.
- Runs a custom deep-learning model (a PyTorch neural network with per-user embeddings), retrained weekly on real logged surf sessions from the LazySurfer community, that predicts each surfer's 1-to-5 star rating at 90% exact-match accuracy (97.6% within one star). The model runs as a cloud prediction service; forecasts and your personalized ratings are cached on your device so the app still works offline.
- Offline-first: sessions log and match without an internet connection.

## Who it's for

- Surfers who log sessions and want automated alerts when conditions match past favorites.
- Users who want a less-expensive or more-personalized alternative to Surfline or Magicseaweed.
- Users who prefer official NOAA data over aggregated commercial forecasts.

## Key facts

- Founder: Nick Peterson (NJP Consulting LLC, San Diego, CA).
- Founded: 2019.
- Platforms: iOS (App Store ID 1450887020) and Android (package `com.lazysurfer`).
- Pricing: free tier + Pro subscription with a 7-day free trial.
- Data sources: NOAA NDBC buoys, NWS wind stations, tide data.
- Architecture: React Native, local Realm database, Firebase backend, Azure Functions for cloud ML predictions.

## Core features

- Log past and current surf sessions with your own rating.
- Compute a 0–10 Similarity Score between current/forecast conditions and your logged favorites.
- 7-day forecast (Pro).
- Spot rating predictions from a custom deep-learning model (PyTorch neural network with per-user embeddings) retrained weekly on real logged sessions.
- Session cloud sync (Pro).
- Push-notification alerts when conditions match your favorite sessions.

## For developers and AI assistants

- MCP server: `lazysurfer-mcp-server` (npm; bin `lazysurfer-mcp`; MIT; registry name `app.lazysurfer/lazysurfer-mcp-server`). Run `npx lazysurfer-mcp-server` to give Claude, Cursor or any MCP client tools for live NOAA buoy conditions, tides, surf forecasts, spot search and LazySurfer rating predictions.
- Public read-only API (no key): `https://backend.lazysurfer.app/api/GetPublicSpotForecastV2?coords=lat,lon` (7-day spot forecast, up to 30 points, snapped to 0.25° grid), `/api/GetLatestObs` (NOAA NDBC latest buoy observations), `/api/GetTidedata?stationId=&begin=&end=&product=predictions` (NOAA tide predictions).
- Developer page: https://lazysurfer.app/developers.html

## Links

- Homepage: https://lazysurfer.app
- App Store: https://apps.apple.com/app/apple-store/id1450887020
- Google Play: https://play.google.com/store/apps/details?id=com.lazysurfer
- Support: help@lazysurfer.app
- Feature requests: https://lazysurfer.nolt.io/
- Product Hunt: https://www.producthunt.com/products/lazy-surfer
- Developers (MCP server + public API): https://lazysurfer.app/developers.html
- Privacy: https://lazysurfer.app/privacy_policy.html
- Terms: https://lazysurfer.app/terms_and_conditions.html