Below are answers to the questions surfers ask most.
“The app has seriously become my #1 resource for surfing, and just gets better with more sessions added.” — Clayton Pascik, Google Play Store review
LazySurfer is a personalized surf forecast app for iOS and Android. It learns from the conditions of your logged surf sessions and uses NOAA buoy data to predict when your favorite spots will match the setups you've rated highly in the past. Think of it as a digital surf log that doubles as a personal forecast model.
LazySurfer has a free tier that includes session logging, current conditions from NOAA buoys, and personalized predictions based on your sessions. LazySurfer Pro adds a 7-day forecast, cloud backup of your sessions, and batch forecast predictions. Pro costs $7.99 per month, $29.99 for 6 months, or $49.99 per year, with a 7-day free trial.
Yes — LazySurfer is offline-first. Session logging, your past sessions, and the on-device machine learning model all run without a network connection. An internet connection is only needed to pull fresh buoy, wind, and tide data and to sync Pro cloud backups.
LazySurfer pulls real-time and historical data directly from the NOAA National Data Buoy Center (NDBC) ocean buoys, NWS wind stations, and tide stations — for example, NDBC station 46232 (Point Loma South, San Diego), NDBC station 46042 (Monterey Bay, CA), and NDBC station 44025 (Long Island, NY). Unlike aggregated commercial forecasts, this means the data comes from the same raw sources professional forecasters use.
Surfline is a centralized forecast with live cams covering major breaks. LazySurfer is a personalized model trained on your own logged sessions — it predicts whether conditions match what you personally like, not a general rating. Both can be useful; many surfers use Surfline for cams and LazySurfer for personalized timing.
Accuracy depends on how many sessions you've logged — the model starts suggesting useful matches after about 10 to 20 rated sessions and keeps improving. Raw weather data comes straight from NOAA buoys, so wind, swell, and tide readings are as accurate as the buoy network. Personal prediction accuracy is a function of your own data.
For most surfers, LazySurfer complements rather than replaces those apps. Surfline's cams and Magicseaweed's global reach are not duplicated here. LazySurfer's niche is the personal layer — knowing when the conditions match your best sessions. Some surfers drop their Surfline subscription and use LazySurfer plus free NOAA data; others keep both.
The Similarity Score is a 0 to 10 match between current or forecast conditions and a logged session. LazySurfer compares wave height, period, direction, wind speed, wind direction, tide height, and tide direction. A 10/10 means the buoy reading is within tight tolerances of a session you've rated; a 3/10 means most parameters are off.
LazySurfer is available on iOS and Android. The iOS app is on the Apple App Store (app id 1450887020) and the Android app is on Google Play as com.lazysurfer. Both apps share the same feature set; Pro subscriptions work across platforms if you sign in with the same account.
Yes — the 7-day forecast is a Pro feature. It uses the same NOAA data pipeline to project wave, wind, and tide conditions up to 7 days out, then scores each forecast window against your logged favorites so you can see when the next sessions matching your preferences are likely to occur.
LazySurfer Pro includes cloud storage of your sessions. Pro users can sync sessions across devices and download session data for analysis. Free-tier users keep sessions on-device only. Session data includes conditions, ratings, spot, timestamp, and notes.
Yes. LazySurfer uses two on-device ML models — K-Nearest Neighbors (KNN) and Multivariate Linear Regression (MLR) — trained on your logged sessions and their ratings. The models predict the rating you'd give a spot under current or forecast conditions. Pro users also get an optional cloud model that complements the local predictions.
After a surf, tap Add Session, pick the spot, rate the session, and LazySurfer automatically pulls the matching NOAA buoy reading, wind data, and tide data for that spot and time. You can edit sessions up to 45 days in the past. Logged sessions feed the personalization model.
LazySurfer supports any spot worldwide for which there's a nearby NDBC buoy or NWS wind station. You can add custom spots anywhere and LazySurfer will pick the nearest data source. Spots without good nearby buoy coverage will have less accurate readings — denser buoy networks such as the US East and West Coasts, Hawaii, and Australia work best.
Email help@lazysurfer.app for support, bug reports, or questions. Feature requests go through the LazySurfer feedback board at lazysurfer.nolt.io. The app is built and maintained by Nick Peterson (NJP Consulting LLC, San Diego, CA).