Comparison

World Time Clock vs CheckTimeYo

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

Head to head
About

World Time Clock

This app helps you track time differences across multiple cities, with real-time sunrise and sunset notifications. It's useful for business by monitoring stock market hours and partner work times, offering a visual representation of day and night cycles globally.

Highlights
  • Real-time sunrise and sunset notifications
  • Business hour tracking for stock markets and partners
  • Calculates time differences with home city as standard
  • Visual day/night line with seasonal changes
  • Weather, temperature, and humidity display
  • Covers approximately 600 major cities
Features
Read full description

Features of WorldTimeClock ・You can be notified of start time, working hours, sunrise, and sunset. You can also use it for business by setting the opening and closing times of the stock market and the business hours of your business partners. ・By setting your home city as the standard, the time difference with other cities is calculated and displayed. ・You can see whether it is day or night at a glance with the day/night line that moves in real time. Of course, it also accommodates seasonal changes in day and night time. ・The list displays the weather, temperature, humidity, sunrise, and sunset times. The black and white background color makes it easy to distinguish between day and night. ・Covering approximately 600 major cities around the world. ・Beautiful graphics, the movement of the sun, and changes in day and night time depending on the season can be seen, making it fun to watch and perfect for everyday use.

About

CheckTimeYo

Features
Read full description

'CheckTimeYo' is a retro-looking clock app that displays the time, the time from cities around the world (489 of them) of your choice, a feed of your choice, a calendar, and today's moon phase. With 390 themes to choose from, you can even select a font to your liking. Download now! It's free, with no ads, no in-app purchases, and no catch! Using this app is easy. For many settings, there's no need to open the Settings screen. Just tap on the area of the screen where you want to make changes. For example, if you want to change the date format to your liking, simply tap on the date displayed on the screen.

Screenshots

World Time Clock4 screens
CheckTimeYo4 screens

Verdict

The call

The clearest difference is in-app purchases: CheckTimeYo at none against World Time Clock's 1. CheckTimeYo also leads on ads (none vs shown). World Time Clock's advantage is update cadence (every 2 weeks vs every 6 weeks). On price, device support and iOS requirement 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

Both are free to download. World Time Clock sells 1 one-off in-app purchase. CheckTimeYo asks for nothing beyond the download.

UpkeepUpdate frequency

World Time Clock ships an update every 2 weeks, CheckTimeYo every 6 weeks. The most recent releases landed on September 20, 2026 and September 18, 2026 respectively.

Scorecard3 real differences · 7 level
World Time Clock versus CheckTimeYo: the parameters behind the verdict, then further details
ParameterWorld Time ClockCheckTimeYo
PriceFreeFree
Rating2.5 (4 ratings) — better—
Positive reviews36.4% of reviews—
Number of ratings4 — better—
Update frequencyEvery 2 weeks — betterEvery 6 weeks
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.1 — better17.4
Further details — not scored
Size100 MB12 MB
Age rating4+4+
DeveloperHajime SuzukiMasayoshi Ueda

In-app purchases

1 purchases

World Time Clock

One-time1
  • Permanent purchase$7.99
None

CheckTimeYo

No in-app purchases

Questions

Is World Time Clock free?
World Time Clock is free to download, with in-app purchases available.
Is CheckTimeYo free?
CheckTimeYo is free to download, with no in-app purchases.
Do World Time Clock or CheckTimeYo have ads?
World Time Clock shows ads; CheckTimeYo does not.
Which is updated more often, World Time Clock or CheckTimeYo?
World Time Clock ships an update every 2 weeks, and CheckTimeYo every 6 weeks. Most recently, World Time Clock was updated on September 20, 2026 and CheckTimeYo on September 18, 2026.

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