# CITIZEN Bluetooth Watch vs 电波表对时 Time Sync

The clearest difference is review sentiment: 电波表对时 Time Sync at 77% against CITIZEN Bluetooth Watch's 19%. 电波表对时 Time Sync also leads on rating (5.0 vs 3.1) and update cadence (daily vs every 4 months). CITIZEN Bluetooth Watch's advantage is price (Free vs $0.99) and ratings volume (11 vs 2). On ads, in-app purchases and device support there is nothing between them.

CITIZEN Bluetooth Watch is free to download; 电波表对时 Time Sync costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

电波表对时 Time Sync holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: CITIZEN Bluetooth Watch has 11 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 19% of CITIZEN Bluetooth Watch's written reviews are positive against 77% of 电波表对时 Time Sync's.

CITIZEN Bluetooth Watch ships an update every 4 months, 电波表对时 Time Sync daily. The most recent releases landed on September 20, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | CITIZEN Bluetooth Watch | 电波表对时 Time Sync |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [3.1 (11 ratings)](https://appshunter.io/ios/app/citizen-bluetooth-watch/id1068381349/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/time-sync/id6447857623/reviews)** |
| Number of ratings | **11** | 2 |
| Positive reviews | 18.8% of reviews | **76.9% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Daily** |
| Monetization | **Free** | Paid |
| Size | 60 MB | 25 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CITIZEN WATCH CO.,LTD](https://appshunter.io/developer/434806605) | [大连森林互动科技有限公司](https://appshunter.io/developer/1602532041) |

## What reviewers say

### 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


### 电波表对时 Time Sync

[App page](https://appshunter.io/ios/app/time-sync/id6447857623)

This utility app simulates six major radio wave clock signals to synchronize atomic watches. It features a "MAX" gain mode for faster synchronization and a realistic interface inspired by radio oscilloscopes. The app is ad-free and offers a pure, user-focused experience for all atomic watch owners.

**Highlights:** Simulates six global radio wave signals, MAX gain signal mode for fast syncing, Supports all atomic watches and clocks, Realistic radio oscilloscope interface, Ad-free and no in-app purchases

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

**In-app purchases:** none


## Frequently asked questions

### Is CITIZEN Bluetooth Watch free?

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

### Is 电波表对时 Time Sync free?

电波表对时 Time Sync costs $0.99, with no in-app purchases.

### Which has better reviews, CITIZEN Bluetooth Watch or 电波表对时 Time Sync?

电波表对时 Time Sync is rated higher. CITIZEN Bluetooth Watch averages 3.1 out of 5 from 11 ratings, while 电波表对时 Time Sync averages 5.0 from 2 ratings.

### Do CITIZEN Bluetooth Watch or 电波表对时 Time Sync have ads?

Neither CITIZEN Bluetooth Watch nor 电波表对时 Time Sync shows ads.

### Which is updated more often, CITIZEN Bluetooth Watch or 电波表对时 Time Sync?

CITIZEN Bluetooth Watch ships an update every 4 months, and 电波表对时 Time Sync daily. Most recently, CITIZEN Bluetooth Watch was updated on September 20, 2026 and 电波表对时 Time Sync on September 26, 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.*