Timeshifter Jet Lag

In-app purchases
1K reviews
Content rating
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About this app

Create highly personalized jet lag plans based on your chronotype, sleep pattern, itinerary, and personal preferences. Timeshifter is the leader in circadian technology, uniquely offering the only scientifically-validated advice proven to quickly adjust you to new time zones and alleviate jet lag symptoms.

// Condé Nast Traveler: “Say goodbye to jet lag”
// The Wall Street Journal: "Indispensable"
// Travel + Leisure: “Game-changer”
// New York Times: “The travel industry’s new fix for jet lag”
// CNBC: "Saves time and money"
// WIRED: "Will help reset your [circadian] clock”
// Lonely Planet: "Incredible"
// Prevention: “One of the best apps according to doctors”

Travelers are constantly bombarded with misguided anecdotal advice from non-experts on how to alleviate jet lag. It's time to replace the myths with tested and validated circadian science.

In your brain, you have a 24-hour circadian clock that regulates nearly all of your biological functions. Jet lag is caused when your sleep/wake and light/dark cycle shift too quickly for your circadian clock to keep up. The only way to reduce jet lag quickly is by shifting your circadian clock to the new time zone.

Light is the most important time cue for “shifting” your circadian clock. Light exposure and avoidance, at the right time, will significantly accelerate your adaptation. Seeing or avoiding light at the wrong time — as often recommended by non-experts — will shift your circadian clock the wrong way – away from your new time zone – making your jet lag worse.

Timeshifter helps you eliminate jet lag by addressing the underlying cause – the disruption of your circadian clock – as well as alleviate the disruptive symptoms, such as insomnia, sleepiness and digestive discomfort.

All the features you need:

Circadian Time™:
Advice is based on your body’s clock

Practicality Filter™:
Adjusts advice to the "real world"

Quick Turnaround®:
Automatically detects short trips

Pre-travel advice:
Start adjusting before departure

Push notifications:
View advice without opening the app

Timeshifter’s benefits are well established. Based on ~130,000 post-flight surveys, 96.4% of the travelers who followed Timeshifter's advice did not struggle with severe or very severe jet lag. When NOT following the advice, there was a 6.2x increase in severe or very severe jet lag, and a 14.1x increase in very severe jet lag.

Your first plan is free. After your free plan, purchase individual plans as-you-go or subscribe for unlimited plans. Timeshifter is a paid service.

These statements have not been evaluated by the Food and Drug Administration. Timeshifter is not intended to diagnose, treat, cure or prevent any disease, and is intended for healthy adults, 18 years of age or older. The Timeshifter app is not intended for pilots and flight crew on duty.
Updated on
Jan 19, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

989 reviews
Aman Daro
July 4, 2024
I was originally suspicious of the app's performance, but then we flew from the West Coast to Japan and followed TImeshifter's schedule pretty closely in both directions. We ended up with only a day or two of light jet lag (while friends suffered for a week or more). It really does work! I can see how it would be hard for some people to follow the schedule (parents with young kids, an inflexible work schedule), if you can stick to it, it's worth the effort. Highly recommended!
1 person found this review helpful
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Chris Traviglia
July 14, 2024
Have used this on a handful of transatlantic trips over the past few years, and it's significantly reduced my jet lag during and after the conclusion of the trips. The app simplifies the preparation for those long journeys, and any lag I do feel is minimal, likely due to not fully sticking to the recommendations. Taking daytime flight also helps me since I can't sleep on flights, but this app has become a necessary aid whenever I cross at least a few time zones.
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Ryan Wood