Best jet lag apps to reset your clock, 2026

Jet lag isn't really a sleep problem; it's a timing problem, and the fix is getting bright light and darkness at the right hours so your body clock shifts toward destination time before you arrive. The catch is that the best-known app, Timeshifter, charges per trip or a yearly subscription and only works online. The two apps below give you the same science-backed approach for free. JetLag Quiet asks for your home and destination time zones, flight date, and usual wake time, then computes a 3-5 day pre-trip plan with light, dark, and optional melatonin windows, exporting it to Apple Calendar with local reminders. Lagless builds a custom 1-4 day light, sleep, and meal schedule based on the Eastman/Burgess phase-shifting protocols, covering the pre-flight, in-flight, and post-arrival stretch in one calendar export.

TestFlight beta Travel

#1 JetLag Quiet

Beat jet lag. No subscription.

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TestFlight beta Travel

#2 Lagless

Beat jet lag before takeoff.

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FAQ

Are these jet lag apps free? ▾

Yes. Both JetLag Quiet and Lagless are free with no subscription and no account, unlike Timeshifter, which charges per trip or per year. JetLag Quiet is free forever and Lagless costs $0.

Do they work offline on a plane? ▾

Yes. Both run entirely on-device with no internet required, so you can check your schedule mid-flight or in a basement hotel. This is a key difference from subscription apps that only run when you're online.

What's the difference between JetLag Quiet and Lagless? ▾

JetLag Quiet focuses on a 3-5 day pre-trip light and sleep schedule and lets you save recurring trip templates. Lagless builds a 1-4 day plan that also includes meal timing and covers the in-flight and post-arrival windows, based on the Eastman/Burgess phase-shifting protocols. Both export to Apple Calendar.

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