# Zef vs SOF FFVoile

The clearest difference is in-app purchases: SOF FFVoile at none against Zef's 3. SOF FFVoile also leads on iOS requirement (11.0 vs 15.0). Zef's advantage is update cadence (fortnightly vs every 4 months) and device support (5 vs 3). On price and ads there is nothing between them.

Both are free to download. Zef sells 3 in-app purchases, starting at $6.99 per month. SOF FFVoile asks for nothing beyond the download.

Zef ships an update fortnightly, SOF FFVoile every 4 months. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Zef | SOF FFVoile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (41 ratings)](https://appshunter.io/ios/app/zef/id1447673572/reviews)** | — |
| Number of ratings | **41** | — |
| Positive reviews | 90.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | Freemium | — |
| Size | 43 MB | 65 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [David Kieffer](https://appshunter.io/developer/1341935892) | [Sailti](https://appshunter.io/developer/960712124) |

## What reviewers say

### Zef

[App page](https://appshunter.io/ios/app/zef/id1447673572)

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.

**Highlights:** 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

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium for one  month | $6.99 | per month |
| Summit for one year | $26.99 | per year |
| Premium for one year | $34.99 | per year |


### SOF FFVoile

[App page](https://appshunter.io/ios/app/sof-ffvoile/id6447633795)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Zef free?

Zef is free to download, with in-app purchases available.

### Is SOF FFVoile free?

SOF FFVoile is free to download, with no in-app purchases.

### Do Zef or SOF FFVoile have ads?

Neither Zef nor SOF FFVoile shows ads.

### Which is updated more often, Zef or SOF FFVoile?

Zef ships an update fortnightly, and SOF FFVoile every 4 months. Most recently, Zef was updated on October 14, 2026 and SOF FFVoile on October 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*