Beat Jet Lag. Enjoy Your Trip.
Create a personalized jet lag plan based on your flight — free, no sign-up.
Where are you flying?
Free forever · No sign-up · Your trip data stays on your device
Enter your flights
Origin, destination and times — round trip supported.
Get your schedule
When to sleep, seek or avoid light, and stop caffeine — day by day.
Use it on the go
See what to do right now, offline in the plane, or from your calendar.
🔬 Built on public guidance from the CDC and NHS and on peer-reviewed circadian research — the same light-timing principles used by sleep scientists. No medication advice.
Questions & answers
Is it really free?
Yes — every feature is free with no sign-up, no plan limits and no paywall. Your trip data never leaves your device.
How does the schedule work?
Jet lag happens because your body clock is still on home time. The strongest lever to move it is bright light at the right time — and light at the wrong time shifts it the wrong way. Your plan times light, sleep and caffeine day by day, based on guidance from public health agencies (CDC, NHS) and peer-reviewed circadian research.
Does it work offline on the plane?
Yes. Open your plan once while online (and optionally add it to your home screen). It then loads without internet, including flight mode.
Do you recommend melatonin or sleeping pills?
No. Health agencies disagree on melatonin (the NHS does not recommend it) and medication is a conversation for you and a doctor. This planner sticks to behavior: light, sleep timing, naps and caffeine.