LazySurfer vs Quiver: Similarity Score Surf Apps Compared
At a glance
| Feature | LazySurfer | Quiver |
|---|---|---|
| Price | Free tier + Pro at $7.99/mo, $29.99/6mo, $49.99/yr (7-day trial) | Free tier + Pro at $4.99/mo or $39.99/yr (14-day trial) |
| Launched | 2019 | 2024-2025 |
| Platforms | iOS, Android | iOS only (iOS 15.1+, iPad, Mac M1+, Apple Vision) |
| Personalization concept | Per-user embedding + deep-learning prediction of your 1-to-5 rating | Similarity score on logged sessions, board recommendations, verdict (“Worth it / Maybe / Skip”) |
| ML architecture | PyTorch deep neural network, weekly retrain, per-user embeddings | Not publicly disclosed |
| Accuracy claim | 90.3% exact-match, 97.6% within one star (validation) | Not published |
| Forecast data source | Real-time NOAA NDBC buoys + NWS wind + tide | Not disclosed (general forecast APIs presumed) |
| Session logging | Core feature | Core feature |
| Board / quiver tracking | Yes | Yes (the namesake feature) |
| Offline support | Offline-first for session logging + cached forecasts | Offline mode with sync |
Where Quiver is the right choice
Quiver is well-priced, has a polished iOS UI, and the Apple Watch / Apple Vision support is nice. The 14-day free trial is generous. The “Worth it / Maybe / Skip” verdict is a fun, decisive UX pattern. If you’re iOS-only and you like the look of the app, the lower price point ($39.99/yr vs $49.99/yr) is real money over time.
Where LazySurfer is the right choice
If you have an Android phone or anyone in your household does, LazySurfer is the only one of these two that runs on it. Quiver is iOS-only and not planning Android support based on public statements.
LazySurfer also pulls data directly from NOAA NDBC buoys — for example, NDBC station 46232 at Point Loma South, or NDBC station 44025 off Long Island. Direct buoy reads are closer to current truth than any modeled forecast, and we document the data flow in the NOAA Buoy Basics post.
The ML side: LazySurfer’s PyTorch deep neural network has been training on real surfer session data since 2019, gets retrained every week, and publishes validation accuracy (90.3% exact-match, 97.6% within one star). Quiver doesn’t publish equivalent numbers.
Can you use both?
You can, but the feature overlap is so high there’s little reason to. Both are session-logging apps with similarity-style personalization. Pick the one whose data sources, platforms, and price model match your situation.
Verdict
Quiver is a well-built iOS-only similarity-score app. LazySurfer is the cross-platform alternative with explicit NOAA buoy data, a published-accuracy ML model, and a real free tier. For Android users the answer is automatic. For iOS users, LazySurfer’s data transparency and free tier are the deciding factors.
See also: LazySurfer vs SurfMap, LazySurfer vs BUIO, LazySurfer vs LiveSurf.ai.