Longitude°: Time Zone Calendar

One schedule. Two time zones.

Free · In‑App Purchases

Longitude° is a calendar for people whose days cross time zones. Switch the whole calendar to another time zone in one tap. Every event moves to the correct local time while the underlying moment stays unchanged. Or open Dual Time to read the same day against two local clocks at once—without duplicating or changing a single event. Highlights: • One-tap time-zone switching across your entire calendar • Dual Time: one schedule with two time scales, dates, and all-day lanes • Month, Week, 3-Day, Day, and chronological Schedule views • Daylight-saving-aware time conversion • Connected multi-day bands in a fixed six-row Month view • Search across the calendars you choose to display • Create and edit events, recurring series, reminders, colors, guests, RSVP, availability, rooms, attachments, locations, links, and supported meetings • Optional direct connections to Google Calendar and Microsoft 365 • Light, Dark, and device-default themes with coordinated color palettes • Local-first design with no Longitude° account, ads, tracking, or Longitude°-operated analytics service Free includes your local time zone and one additional favorite. Longitude° Pro is a one-time purchase that unlocks unlimited saved time zones and custom labels. Calendar capabilities vary by provider. Provider-managed reservations may be read-only to protect the source data.

Ratings & Reviews

  • 5.0
    out of 5
    1 Ratings

• Reopen the app to see your last synced events immediately. • Connected calendars now keep their last complete snapshot when you are offline or a refresh is incomplete. • Fixed multi-day all-day end dates from Apple Calendar. • Added reusable custom event colors and live palette previews. • Improved calendar reliability and launch performance.

Version 1.1.1

The developer, Kakei Yamamoto, 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 Linked to You

    The following data may be collected and linked to your identity:

    • Location
    • Contact Info
    • Contacts
    • User Content
    • Identifiers
    • Diagnostics
    • Other Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Identifiers
    • Usage Data

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
Kakei Yamamoto
Size
42 MB
Category
Productivity
Compatibility
Requires iOS 16.0 or later.
  • iPhone
    Requires iOS 16.0 or later.
  • iPad
    Requires iPadOS 16.0 or later.
Languages
English and 9 more
  • English, French, German, Italian, Japanese, Korean, Russian, Simplified Chinese, Spanish, Traditional Chinese
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 Kakei Yamamoto
  • Developer Website
  • Privacy Policy

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