Zef vs WSurfLog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zef
Track and organize your rides for various sports, including nautical activities. Features include race organization, jump height estimation, and social sharing of sessions and spots. Integrates with Health app for comprehensive data recording.
- Race organization and championship management
- Jump height estimation using drone technology
- Support for a wide range of sports
- GPX file import from watches
- Health app integration
- Social feed for friends and spots
- Live tracking and notifications
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Zef — Ride. Track. Connect. Zef is a multi-sport tracking app built for riders, with a strong focus on nautical sports. Track your sessions, analyze your performance, discover spots, and see your friends live — all in one app. Key Features Track your rides Record your sessions with your iPhone or Apple Watch. Zef integrates with the Health app and supports GPX imports from most watches. Advanced performance analytics Get detailed session stats including speed, distance, duration, speed polar, and health data. Sessions can be replayed to analyze each maneuver. Jump analysis Measure jump height using only your iPhone or Apple Watch. Powered by algorithms inspired by drone technology. Races & challenges Create private or public races for training or competition. Visual guidance and wind angles are displayed directly on your iPhone or Apple Watch. Spots & live activity Discover spots around you and see when riders are active. Follow spots and get notified when sessions start. Friends & live tracking Follow riders by username and get notified when friends go live. Watch their sessions live on the map and stay connected. Supported Sports Sailing, Windsurfing, Kitesurfing, Wingfoil, Kitefoil, Windfoil, SUP Foil, Surfing, Wakeboard, Kayaking, Paddling, Snowkiting, Landkiting, Cross-country skiing, Skating, Bike, Electric Bike, Parawingfoil, and more with custom tags. Apple Ecosystem • iPhone & Apple Watch support • Health app integration • Optimized for the Apple ecosystem Important Sessions must be recorded from the ground to be validated. Legal Terms of Service https://zef.watch/terms-and-conditions.html Privacy Policy https://zef.watch/privacy-and-security-policy.html
WSurfLog
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Log your windsurf sessions with Gear, Conditions and Trim. You can see how many hours your gear has been used, find the perfect trim and keep a diary of your windsurfing sessions.
Screenshots
Verdict
The clearest difference is in-app purchases: WSurfLog at none against Zef's 3. Zef's advantage is update cadence (fortnightly vs every 4 months) and device support (5 vs 2). On price, ads and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Zef sells 3 in-app purchases, starting at $6.99 per month. WSurfLog asks for nothing beyond the download.
Zef ships an update fortnightly, WSurfLog every 4 months. The most recent releases landed on September 26, 2026 and May 17, 2026 respectively.
| Parameter | Zef | WSurfLog |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (41 ratings) — better | — |
| Positive reviews | 90.7% of reviews | — |
| Number of ratings | 41 — better | — |
| Update frequency | Fortnightly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod, Mac, Apple Watch — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.4 |
| Further details — not scored | ||
| Size | 43 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | David Kieffer | Fredrik Astrand |
In-app purchases
Zef
- Premium for one month7 Days trial$6.991 Month
- Summit for one year$26.991 Year
- Premium for one year$34.991 Year
WSurfLog
No in-app purchases
