
$3.99
About
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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What's New in Jisanarashi
1.0
September 8, 2026





