# RACING B55 vs Flex

The clearest difference is update cadence: Flex at every 3 weeks against RACING B55's every 12 months. RACING B55's advantage is iOS requirement (9.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RACING B55 ships an update every 12 months, Flex every 3 weeks. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | RACING B55 | Flex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/racing-b55/id1193234168/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 17 MB | 40 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Breitling SA](https://appshunter.io/developer/323691435) | [Sebastian Linge](https://appshunter.io/developer/815585889) |

## What reviewers say

### RACING B55

[App page](https://appshunter.io/ios/app/racing-b55/id1193234168)

This app enhances a connected chronograph's functionality by allowing users to adjust settings, store and analyze time series data, and configure race functions. It provides a seamless link between the watch and smartphone for improved performance tracking and data management.

**Highlights:** Adjust chronograph settings remotely, Store and compare time series data, Configure race and rally functions, Measure average speed with tachymeter, Receive smartphone notifications on watch, Personalize display settings, Update watch software

**In-app purchases:** none


### Flex

[App page](https://appshunter.io/ios/app/flex-app/id6504161299)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RACING B55 free?

RACING B55 is free to download, with no in-app purchases.

### Is Flex free?

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

### Do RACING B55 or Flex have ads?

Neither RACING B55 nor Flex shows ads.

### Which is updated more often, RACING B55 or Flex?

RACING B55 ships an update every 12 months, and Flex every 3 weeks. Most recently, RACING B55 was updated on November 2, 2026 and Flex on October 30, 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.*