Synchrona

Utilities

$0.99 · Designed for iPad. Not verified for macOS.

Drag the slider and every city moves together. Finding a call time that works for Tokyo, New York, and you takes a few seconds. Synchrona shows the current time in every city you care about, on one dark screen you can read from across the room. The slider along the bottom is the main idea. Drag it and every city shifts together, so you can see what 4 PM your time looks like in Tokyo, London, and Sydney before you send the invite. A colored strip under the slider runs from midnight blue through sunrise orange to noon amber and back to night, so you always know which part of the day you are pointing at. Let go and the slider settles on the nearest five minutes. Each city card shows the time in large, light digits, the zone abbreviation, and a sun or moon for day and night. When a city is already on tomorrow or still on yesterday, a +1 DAY or -1 DAY marker appears next to the time. Your own time zone stays pinned in blue at the top of the list. Add cities from a built-in list of 20 world cities. Remove one with a long press. Your list is saved on the device and nowhere else. Synchrona has no accounts and makes no network requests. Synchrona runs on iPhone, iPad, and Mac.

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The developer, Kai Kunze, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Kai Kunze
    Size
    • 2.4 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 18.5 or later.
    • iPhone
      Requires iOS 18.5 or later.
    • iPad
      Requires iPadOS 18.5 or later.
    • Mac
      Requires macOS 15.5 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 2.5 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 Kai Kunze
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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