Zef vs iQFoil Class
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
iQFoil Class
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Official mobile application of the iQFOIL International Class Major Championships Live information on all races, constant results update, daily images, videos and interviews with the top sailors of the regatta are some of the features offered by this App to enable you to track down to the minute everything that is going on during every class major championship. Furthermore, if you wish so, you can receive alerts of all relevant information from any of the races or teams you wish to follow closely. With this App, live the major iQFOiL Class Major Championships wherever you may be as you had never imagined!
Screenshots
Verdict
The clearest difference is in-app purchases: iQFoil Class at none against Zef's 3. iQFoil Class also leads on iOS requirement (11.0 vs 15.0). Zef's advantage is update cadence (fortnightly vs every 18 months) and device support (5 vs 3). On price and ads 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. iQFoil Class asks for nothing beyond the download.
Zef ships an update fortnightly, iQFoil Class every 18 months. The most recent releases landed on October 14, 2026 and September 26, 2026 respectively.
| Parameter | Zef | iQFoil Class |
|---|---|---|
| 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 18 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod, Mac, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 43 MB | 64 MB |
| Age rating | 4+ | 4+ |
| Developer | David Kieffer | Sailti |
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
iQFoil Class
No in-app purchases
