# EXOSPACE B55 vs CITIZEN Bluetooth Watch

The clearest difference is rating: CITIZEN Bluetooth Watch at 2.9 against EXOSPACE B55's 1.6. EXOSPACE B55's advantage is ratings volume (65 vs 12) and iOS requirement (9.0 vs 15.6). On price, review sentiment, update cadence and ads there is nothing between them.

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

CITIZEN Bluetooth Watch holds the better App Store score, 2.9 against 1.6. That said, the two scores are not equally well evidenced: EXOSPACE B55 has 65 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 14% of EXOSPACE B55's written reviews are positive against 19% of CITIZEN Bluetooth Watch's.

EXOSPACE B55 ships an update every 2 months, CITIZEN Bluetooth Watch every 4 months. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | EXOSPACE B55 | CITIZEN Bluetooth Watch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (65 ratings)](https://appshunter.io/ios/app/exospace-b55/id1016372966/reviews) | **[2.9 (12 ratings)](https://appshunter.io/ios/app/citizen-bluetooth-watch/id1068381349/reviews)** |
| Number of ratings | **65** | 12 |
| Positive reviews | 14.1% of reviews | **18.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | Free |
| Size | 13 MB | 60 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Breitling SA](https://appshunter.io/developer/323691435) | [CITIZEN WATCH CO.,LTD](https://appshunter.io/developer/434806605) |

## What reviewers say

### EXOSPACE B55

[App page](https://appshunter.io/ios/app/exospace-b55/id1016372966)

Enhance your connected chronograph's functionality with this companion app. It allows for easy adjustment of watch settings, saving and analyzing measurement data, and configuring various chronograph functions. Receive smartphone notifications directly on your watch and update its software seamlessly.

**Highlights:** Verify and adjust chronograph settings, Save and analyze time series measurements, Configure chronograph functions, Access and save flight times, Receive smartphone notifications on watch, Personalize watch display, Update watch software

**Features:** macOS Compatibility

**In-app purchases:** none


### CITIZEN Bluetooth Watch

[App page](https://appshunter.io/ios/app/citizen-bluetooth-watch/id1068381349)

This app connects your smartphone to compatible Bluetooth watches, offering automatic time synchronization, world time settings, and notifications for calls and messages. It also features alarm setting, a light level indicator for the watch's power, and tools to locate your smartphone or alert you if the connection is lost.

**Highlights:** Automatic time synchronization, World time settings, Call and message notifications, Alarm setting, Light level indicator, Smartphone search function, Link loss alert

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EXOSPACE B55 free?

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

### Is CITIZEN Bluetooth Watch free?

CITIZEN Bluetooth Watch is free to download, with no in-app purchases.

### Which has better reviews, EXOSPACE B55 or CITIZEN Bluetooth Watch?

CITIZEN Bluetooth Watch is rated higher. EXOSPACE B55 averages 1.6 out of 5 from 65 ratings, while CITIZEN Bluetooth Watch averages 2.9 from 12 ratings.

### Do EXOSPACE B55 or CITIZEN Bluetooth Watch have ads?

Neither EXOSPACE B55 nor CITIZEN Bluetooth Watch shows ads.

### Which is updated more often, EXOSPACE B55 or CITIZEN Bluetooth Watch?

EXOSPACE B55 ships an update every 2 months, and CITIZEN Bluetooth Watch every 4 months. Most recently, EXOSPACE B55 was updated on October 24, 2026 and CITIZEN Bluetooth Watch on October 21, 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.*