始業・終業時間の変更ができない！
始業・終業時間の変更ができません。タップしてドラム状の変更できそうな画面はでるが、変更しようとそのドラム画面を更にタップすると元の画面に戻ってしまう。ここの不具合をすぐ解決してほしい。
Very good App
Works well. Nice layout.
ミーティングの時間決めに悩まない
昼夜、業務時間がグラフ化されているので、海外とのやりとりの時間設定するときに相手の日時が視覚的に把握できるのでとても便利です。 重宝しています！
Free
In-App PurchasesWith Ads
About
Visualize day/night cycles and working hours across different cities with an interactive timeline. Receive custom notifications for sunrise and sunset. Manually adjust work hours for precise scheduling.
✓Day/night and working hour graphs
✓Automatic time updates
✓Manual work hour adjustment
✓Interactive time cursor
✓Sunrise/sunset alarm notifications
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What's New in World Time Calc
1.3.0
June 27, 2026
Added support for daylight saving time Fixed minor bugs
1
In-App Purchases
$7.99
PremiumPlan
Hide ads, alarm function, up to 30 cities
User reviews
Developer apps
FAQ
What is World Time Calc?
World Time Calc is a time converter app that visualizes day/night cycles and working hours across different cities. It offers automatic time updates and customizable alarm notifications for sunrise and sunset.
Can I manually adjust working hours in World Time Calc?
Yes, you can manually adjust the working hours for each city within World Time Calc. This allows for precise scheduling and visualization of business hours regardless of standard times.
Does World Time Calc have ads?
Yes, World Time Calc contains advertisements. As a free application, ads are displayed to support its development and maintenance.
What devices is World Time Calc available on?
World Time Calc is available on iPhone and iPad devices. It is designed to function across the Apple ecosystem.
How often is World Time Calc updated?
World Time Calc was last updated on September 24, 2025, with version 1.2.0. The release date was November 22, 2023, suggesting regular updates are provided by the developer.
What is the age rating for World Time Calc?
World Time Calc has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.
Can World Time Calc notify me about sunrise and sunset?
Yes, World Time Calc allows you to send alarm notifications for sunrise, sunset, and your defined start and end times for working hours.
