Jisanarashi - Jet Lag Plan

Light and sleep, day by day

$3.99 · Designed for iPad. Not verified for macOS.

Enter your destination and dates, and get a day-by-day plan to ease jet lag. The one thing to do right now is shown big and first. No theory to read. FEATURES - Enter departure/arrival cities, dates, and your usual sleep times to build a full plan - Preparation starts up to 3 days before departure, shifting your body clock gradually - Each day shows a timeline: bright-light window, light to avoid, sleep, meals, caffeine cutoff, and nap window - Flight-day guidance including when to sleep on the plane - After arrival, remaining adjustment days follow local time - Local notifications for light and sleep times (up to 6 per day, optional) - Widget and Lock Screen display show what to do now PRIVATE BY DESIGN - No network connection at all. Works fully in airplane mode - No account, no ads, no in-app purchases. One-time purchase - Your inputs and plans are stored only on your device - 245 cities, daylight saving time handled automatically This app offers general guidance based on common jet lag adjustment methods. It is not medical advice.

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The developer, WCH, K.K., 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

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    Information

    Seller
    WCH, K.K.
    Size
    964.6 KB
    Category
    Travel
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and Japanese
    Age Rating
    9+
    Copyright
    © 2026 WCH, K.K.
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

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

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