# MB Pro Center vs Zef

The clearest difference is in-app purchases: MB Pro Center at none against Zef's 3. MB Pro Center also leads on iOS requirement (9.2 vs 15.0). Zef's advantage is update cadence (fortnightly vs every 9 months) and device support (5 vs 2). 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. MB Pro Center asks for nothing beyond the download.

MB Pro Center ships an update every 9 months, Zef fortnightly. The most recent releases landed on October 26, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | MB Pro Center | Zef |
| --- | --- | --- |
| 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Fortnightly** |
| Monetization | — | Freemium |
| Size | 13 MB | 43 MB |
| Requires iOS | **9.2** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Gread Elettronica srl](https://appshunter.io/developer/671539111) | [David Kieffer](https://appshunter.io/developer/1341935892) |

## What reviewers say

### MB Pro Center

[App page](https://appshunter.io/ios/app/mb-pro-center/id1382777843)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is MB Pro Center free?

MB Pro Center is free to download, with no in-app purchases.

### Is Zef free?

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

### Do MB Pro Center or Zef have ads?

Neither MB Pro Center nor Zef shows ads.

### Which is updated more often, MB Pro Center or Zef?

MB Pro Center ships an update every 9 months, and Zef fortnightly. Most recently, MB Pro Center was updated on October 26, 2026 and Zef on November 2, 2026.

---

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