SOF FFVoile vs Gustly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SOF FFVoile
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For more than 50 years, the Semaine Olympique Française has been a major event in the international circuit for Olympic sailing. Similar to Roland Garros for the tennis federation, the SOF is for the FFVoile the largest annual competition of Olympic sailing in France, praised every year for the quality of the races that take place in the idyllic setting of the Golden Islands, but also recognized for its flawless organization, both at sea and on land.
Gustly
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Gustly is a GPS session tracker for windsurfing, kitesurfing, windfoiling, and wingfoiling. Record on your phone or Apple Watch, import sessions from compatible GPS devices, and turn your tracks into useful performance insights. Session Analysis connects your results to the water. Select a speed run to see when it happened on the timeline and where it happened on the route. Scrub the chart and zoom in on the map to explore your session in detail. With Gustly you can: - Record GPS sessions on your phone or Apple Watch - Keep recording an active phone session when the screen is off - Import GPX and FIT files, including Garmin exports - Review 2-second speed, top 10-second runs, distance runs, Alpha 500, endurance results, and available gybe and tack insights - Browse your session history, routes, and totals - Save sessions locally and sync when you’re back online - Export your session data - Use iPad’s larger screen to explore maps, timelines, and results Location access is used to record active GPS sessions. With your permission, Health access supports Apple Watch heart-rate data and workout saving. Gustly is a performance-tracking tool, not a navigation or safety device.
Screenshots
Verdict
The clearest difference is update cadence: Gustly at every 9 days against SOF FFVoile's every 4 months. SOF FFVoile's advantage is iOS requirement (11.0 vs 16.4). On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
SOF FFVoile ships an update every 4 months, Gustly every 9 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | SOF FFVoile | Gustly |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 11.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 65 MB | 73 MB |
| Age rating | 4+ | 4+ |
| Developer | Sailti | Konstantinos Kefalas |
In-app purchases
SOF FFVoile
No in-app purchases
Gustly
No in-app purchases









