Comparison

Clock Wave vs CITIZEN Eco

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Clock Wave

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
Currently charting
Read full description

Clock Wave allows you calibrate radio controlled watch or clock anytime and anywhere. Just click "Transmit" button, set your watch or clock to manual receive time signal, and place it nearby your iPhone/iPad's speaker, it will be calibrated in a few minutes. Clock Wave features: - Covers 5 major longwave time signal stations all over the world. * USA: WWVB * Japan: JJY * China: BPC * UK: MSF * DE: DCF77 - Automatically transmit the accurate time. * If your radio controlled watch/clock doesn't support station BPC, select station JJY manually to use in China. * If your radio controlled watch/clock doesn't support station MSF, select station DCF77 manually to use in UK. * If your radio controlled watch/clock support only a specified timezone or station, (e.g. Using a radio controlled clock support only JJY station in Australia.), select the watch/clock timezone manually in app settings.

About

CITIZEN Eco

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
Read full description

*Important Notice Thank you for using Citizen products. As of 12/31/2027, we will no longer provide service for dedicated apps for some models and functions used in conjunction with the apps. For details, see this link. https://www.citizenwatch-global.com/support/im/smartwatch.html Overview This is the official app for linking your smartphone with CITIZEN Bluetooth® watches. The app, which works with iPhone, enables you to set the time and the alarm for your watch, and to receive alerts for incoming calls, mails and texts. With the CITIZEN Bluetooth Watch, you get to enjoy an exquisite analogue watch that tells the accurate time wherever you are plus the great convenience of a smartphone link. CITIZEN Bluetooth features CITIZEN’s proprietary light-powered technology Eco-Drive. Eco-Drive eliminates the need to replace batteries or recharge via cable. Features 1. Time Sync Get the right time, all the time. When you connect with your smartphone, the time on your watch automatically updates to the current time (smartphone time). 2. World Time Get the time in any city around the world. Just touch the world map inside the app to set your watch to the locations time (world time). 3. Call Notification Find out when you get a call. The watch emits a sound or rotates the hands to let you know when you get a call. A filter function enables you to specify which callers will trigger alerts. 4. Message Notification Find out when you get a mail, text or SNS notification. The watch emits a sound or rotates the hands to let you know when a new e-mail or SNS notification has arrived. You can also select the apps for which you wish to receive notification alerts. 5. Alarm Set your alarm from your smartphone. You can set up to 3 alarms at one time. By setting your watch alarm using the smartphone app. The alarm can be set for different times and/or different days of the week. 6. Light Level Indicator See how much light—and power—your dial is getting. Find out how much power your watch is generating by tracking the light it’s exposed to on a daily, weekly or monthly basis. This unique function reflects CITIZEN’s status as a pioneer of light-powered technology. 7. Smartphone Search Find your smartphone easily. Misplaced your smartphone? Not a problem. Use your watch to locate your phone by having it emit a sound to indicate its whereabouts. (Range limitations apply.) 8. Link Loss Alert Get alerted when you’ve forgotten your smartphone somewhere. The watch emits a sound or rotates the hands to let you know when the link between your smartphone and your watch is broken. This app requires iOS 11.2 or later. Notifications have the options of 15 different original sounds, exclusively prepared for the W410 mode About Eco-Drive: Eco-Drive is a CITIZEN proprietary light-powered technology which eliminates the need for replacing batteries. Eco-Drive generates power from any kind of light—from sunlight to dim light—to drive the watch, and stores the surplus on a rechargeable cell. On a single full charge it can run for up to six months in total darkness*. For more details, click here. http://www.citizenwatch-global.com/technologies/index.html#eco-drive * Some models run for less than six months.

Screenshots

Clock Wave3 screens
CITIZEN Eco4 screens

Verdict

The call

The clearest difference is review sentiment: Clock Wave at 89% against CITIZEN Eco's 0%. Clock Wave also leads on chart position (#42 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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 7 level
Clock Wave versus CITIZEN Eco: the parameters behind the verdict, then further details
ParameterClock WaveCITIZEN Eco
Price$1.99Free — better
Rating4.7 (259 ratings) — better—
Positive reviews89.0% of reviews — better0.0% of reviews
Number of ratings259 — better—
Update frequencyEvery 2 months — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank#42 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS9.0 — better15.6
Further details — not scored
Size2 MB67 MB
Age rating4+4+
Developer震 任CITIZEN WATCH CO.,LTD

Customer experience

Clock Wave

All ratings248 ratings
Positive93.5%
Neutral0.4%
Negative6.0%
Written reviews427 reviews
Positive89.0%
Neutral2.1%
Negative8.9%

CITIZEN Eco

Written reviews6 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

Clock Wave

Reported bugs

2 issues
  • Incompatibility with certain iOS versions
  • Incorrect time zone adjustments

Requested features

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

CITIZEN Eco

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Clock Wave

No in-app purchases

None

CITIZEN Eco

No in-app purchases

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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