Trtl Jet Shift

JetShift helps you arrive feeling human.

Jet lag happens because your body clock is still running on home time. JetShift works out exactly how to shift your sleep and meal times — gradually, in the days before you travel — so that by the time you land, your body is already adjusting to your destination.

How it works

Tell JetShift your home city, destination, and travel dates. Add your usual sleep and meal times. JetShift does the rest — generating a day-by-day schedule across three phases:

Pre-trip: gradually shift your bedtime, wake time, and mealtimes toward your destination's timezone, at a comfortable pace of up to an hour per day.

During the trip: follow a schedule locked to local time at your destination.

Post-trip: ease back to your home routine over the same number of days.

Daily log

Check in each day to record when you actually woke up, went to sleep, and ate. Rate your sleep quality to track how well the adjustment is working.

Built for real travel

JetShift handles the tricky stuff: large east-west timezone gaps, half-hour and quarter-hour offsets (India, Nepal, Chatham Islands), and daylight saving time transitions. Whether you're crossing two time zones or twelve, JetShift finds the most efficient adjustment path.

Your data stays on your device

JetShift works entirely offline. Everything you enter — your trip details, routine, and logs — is stored locally on your device and never transmitted anywhere. There are no accounts, no sign-up, and no internet connection required.

Simple and focused

No subscription. No ads. No unnecessary features. Just a clear, practical schedule to help you make the most of every trip.