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About this app

Make jet lag history with science-based and highly personalized jet lag plans. Trusted by more than 1.7 million travelers and rated "as good as it's going to get" by The New York Times.

• The Wall Street Journal: "Indispensable"
• Condé Nast Traveler: "Say goodbye to jet lag"
• WIRED: "Will help reset your [circadian] clock"
• Travel + Leisure: "Game-changer"

PROVEN RESULTS
Timeshifter is used by astronauts, Formula 1 drivers, NBA players, and Olympic athletes.

Based on ~130,000 post-flight surveys:
✓ 96.4% of travelers who followed the advice avoided severe jet lag entirely.
✓ Travelers who ignored the advice were 6.2x more likely to experience severe jet lag – and 14.1x more likely to experience very severe jet lag.

YOUR FIRST PLAN IS FREE
Your first jet lag plan is free – no commitment is required! After your free plan, you can choose to purchase plans as-you-go or subscribe for unlimited plans.

KEY FEATURES
✓ 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

JET LAG MYTHS VS. CIRCADIAN SCIENCE
• Misleading advice on conquering jet lag – often promoted by non-experts or companies lacking real circadian science expertise – not only fails to help travelers but can make jet lag symptoms worse and may even cause harm.
• Jet lag CANNOT be fixed with generic sleep advice, exercise, hydration, dietary supplements, special diets, or fasting. None of these approaches will reset a traveler’s central circadian clock quickly to new time zones.
• Light is the key time cue to “reset” our circadian clocks, so the correct timing of light exposure and light avoidance, based on the traveler’s chronotype, normal sleep pattern and itinerary, is the only way to adjust to new time zones quickly. If the traveler’s timing is wrong, it will make their jet lag worse.

WHY WE MADE TIMESHIFTER
Getting the timing right is both complex and unintuitive. We created Timeshifter to make circadian science accessible and help you apply it to conquer jet lag.

Timeshifter helps you tackle both the underlying cause of jet lag – the disruption of your circadian clock – as well as reduce the disruptive symptoms, such as insomnia, sleepiness and digestive discomfort.

Timeshifter was developed with Dr. Steven W. Lockley. A Harvard Medical School faculty member for over 20 years and former Neuroscientist at Brigham and Women's Hospital, he is an international authority on circadian rhythms and sleep with nearly 30 years of research experience. Dr. Lockley helps NASA astronauts and mission controllers, Formula 1 drivers, NBA players, and Olympic athletes perform at their best.

Download Timeshifter and make jet lag history on your next flight.

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. Timeshifter is not intended for pilots and flight crew on duty.

Terms of Use:
www.timeshifter.com/legal/terms-of-use

Privacy Policy:
www.timeshifter.com/legal/privacy-policy

Downloads

1.2.3.4.5.6.7.8.9.0

LATEST

07/03/2025

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74.66 MB

Supported Architectures

x86 x86-64 armeabi-v7a arm64-v8a

MD5 Checksum

1989573d470676cb572280029d72a8ed

Minimum SDK Version

24

Version Code

505

Upload Date

Jul 3, 2025, 1:08:34 AM

1.2.3.4.5.6.7.8.9.0

06/03/2025

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74.66 MB

Supported Architectures

x86 x86-64 armeabi-v7a arm64-v8a

MD5 Checksum

c6de895b1f07029a04f0f0d6e15716b3

Minimum SDK Version

24

Version Code

504

Upload Date

Jun 3, 2025, 10:45:51 AM

1.2.3.4.5.6.7.8.9.0

03/18/2025

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74.8 MB

Supported Architectures

x86 x86-64 armeabi-v7a arm64-v8a

MD5 Checksum

e1e704f249b6bf9b49dd695ce4fbcf7b

Minimum SDK Version

24

Version Code

501

Upload Date

Mar 18, 2025, 7:46:06 PM

1.2.3.4.5.6.7.8.9.0

12/22/2024

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68.26 MB

Supported Architectures

x86 x86-64 armeabi-v7a arm64-v8a

MD5 Checksum

761eca6601109d3e1d28021ef6e4b84e

Minimum SDK Version

24

Version Code

499

Upload Date

Dec 22, 2024, 2:42:24 AM

1.2.3.4.5.6.7.8.9.0

02/05/2024

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44.83 MB

Supported Architectures

x86 x86-64 armeabi-v7a arm64-v8a

MD5 Checksum

5de5cfedcef65ce957cdc6b7badbfd87

Minimum SDK Version

21

Version Code

496

Upload Date

Feb 5, 2024, 9:30:56 AM

1.2.3.4.5.6.7.8.9.0

11/21/2023

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41.87 MB

Supported Architectures

x86 x86-64 armeabi-v7a arm64-v8a

MD5 Checksum

9442251ebefd6ddfa25327063632dd8e

Minimum SDK Version

21

Version Code

494

Upload Date

Nov 21, 2023, 7:40:47 AM

1.2.3.4.5.6.7.8.9.0

12/21/2022

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48.21 MB

Supported Architectures

x86 x86-64 armeabi-v7a arm64-v8a

MD5 Checksum

a592fc02c54b69ca0176143b156acbea

Minimum SDK Version

21

Version Code

485

Upload Date

Dec 21, 2022, 3:49:00 PM