# Clock Wave vs CITIZEN Eco

The clearest difference is review sentiment: Clock Wave at 89% against CITIZEN Eco's 0%. Clock Wave also leads on chart position (#46 vs unranked) and iOS requirement (9.0 vs 15.6). CITIZEN Eco's advantage is price (Free vs $1.99). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

CITIZEN Eco is free to download; Clock Wave costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Clock Wave ships an update every 2 months, CITIZEN Eco every 5 months. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Clock Wave | CITIZEN Eco |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.7 (259 ratings)](https://appshunter.io/ios/app/clock-wave/id1073576068/reviews)** | — |
| Number of ratings | **259** | — |
| Positive reviews | **89.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | Free |
| Best chart rank | **#46** | — |
| Size | 2 MB | 67 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [震 任](https://appshunter.io/developer/1073576067) | [CITIZEN WATCH CO.,LTD](https://appshunter.io/developer/434806605) |

## What reviewers say

### Clock Wave

[App page](https://appshunter.io/ios/app/clock-wave/id1073576068)

**Currently charting:** #46 Top Paid · Utilities (US App Store)

Calibrate your radio-controlled watch or clock using your iPhone or iPad. Simply tap 'Transmit' and place your device near your watch to automatically sync the accurate time.

**Highlights:** Calibrate radio-controlled watches/clocks, Transmit accurate time automatically, Supports 5 major global time signal stations, Manual station selection for compatibility, Automatic time signal transmission

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Works as advertised
- 👍 Easy to use
- 🚀 Syncs watches quickly
- 💡 Clever solution for remote areas
- 👍 Reliable and consistent

**What reviewers complain about**

- 🐛 Doesn't work for some watches
- 🐛 Inconsistent performance
- 🐛 Occasional crashes or failures

**Reported bugs**

- Incompatibility with certain iOS versions
- Incorrect time zone adjustments

**Requested features**

- Ability to transmit signal automatically
- Support for more watch brands/models
- Improved volume/signal strength control


### CITIZEN Eco

[App page](https://appshunter.io/ios/app/citizen-eco-drive-bluetooth-s/id1268478800)

This app connects your smartphone to compatible watches, allowing you to sync time, set alarms, and receive notifications for calls and messages. It also features world time settings and a light level indicator for the watch's power source.

**Highlights:** Automatic time synchronization, World time settings, Call and message notifications, Customizable alarms, Light level indicator, Smartphone search function, Link loss alerts

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Clock Wave free?

Clock Wave costs $1.99, with no in-app purchases.

### Is CITIZEN Eco free?

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

### Do Clock Wave or CITIZEN Eco have ads?

Neither Clock Wave nor CITIZEN Eco shows ads.

### Which is updated more often, Clock Wave or CITIZEN Eco?

Clock Wave ships an update every 2 months, and CITIZEN Eco every 5 months. Most recently, Clock Wave was updated on November 6, 2026 and CITIZEN Eco on November 4, 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.*