Timeshifter

Timeshifter

Jet lag app

2.7K ratings
1482 reviews
#26 in top-grossing Travel
💪 Health & Fitness
✈️ Travel
Free
In-App Purchases

Details

  • Released
  • Updated
  • June 20, 2018
  • October 6, 2026

Features

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About

This app provides personalized plans to combat jet lag based on circadian science. It offers practical advice for light exposure and avoidance to help you adjust to new time zones quickly and reduce symptoms like insomnia and sleepiness.

✓Personalized jet lag plans
✓Circadian Time™ advice
✓Practicality Filter™
✓Pre-travel adjustment advice
✓Push notifications for advice
✓Automatic detection of short trips
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What users say

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+1

What's New in Timeshifter

2.6.10

October 6, 2026

We release updates regularly, and we're always looking for ways to make the experience better. Let's dive into the enhancements you'll find in our latest update: ## Fixed - Overall design and performance improvements If you have any feedback, or run into issues, please use the live chat in the app. We love to talk.

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3

Subscriptions & In-App Purchases

Timeshifter

Unlimited jet lag plans for 1 year

$24.991 Year
How to cancel Timeshifter subscription ⁉️

Charts

Top Grossing

📈 26+2

Travel

This app rose +2 positions in Travel chart.

Last updated on October 8, 2026.

User reviews

It works!

I used the Timeshifter app on a recent trip from Boston to London. The plan was tailored to my personal sleep/wake habits and was easy to follow. It was presented in a clear, easy to follow manner with simple instructions and information about the science behind the plan. My plan started two days before my departure day and included advice on when to get/avoid sun and light exposure, timing of caffeine and melatonin consumption (both optional) and when to sleep and wake. I followed the plan as closely as I could and it worked very well!! I was slightly drowsy part way through my first day in London, but I stayed outside in the sun and kept busy and didn’t go to bed until 10pm local time. After that day, I was completely “timeshifted” to London time. I will most definitely be using the Timeshifter app for all my future travel across time zones.
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Fantastic

Backed by science, no magic portions. This really works. Thank you, team. I have been telling all my friends about this app.

I never usually write reviews, but here we are

No dark mode

It’s rich that an app focused on sleep doesn’t even have an icon that goes into dark mode. Simple lines of code to help our eyes stay less awake. Wild to me.

It works!

I fly from NY to Japan, and or Korea. These are long flights. This app really helps me adjust, so I'm fresh when I arrive. I'll be honest, it can be hard to stick to the plan when you're in a bright airport and it's telling you to avoid light, or there are multiple stop overs. But be as diligfent as you can. It's worth it to avoid that crippling jetlag.

Now if I could just remember to do it on the reurn trip! ;-)
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Great help

Even though i wasn’t able to follow the instructions exactly while was on the plane because of the lack of caffeine and exposure to light because it was an overnight flight. I do believe the prep before I left helped.
I was expecting to feel bad the next day after the flight. But I felt good and was able to enjoy a whole day sightseeing.
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Developer apps

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User experience

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Reported Bugs

2 issues

App crashing or getting stuck on a white screen

Bug

Issues with account login and data loss

Bug
✨

Requested Features

3 requests

Ability to adjust plan for unexpected schedule changes

Feature

Integration with fitness trackers or sleep apps

Feature

Recommendations for meal timing and nutrition

Feature

FAQ

What does the Timeshifter app do?

Timeshifter creates personalized jet lag plans based on scientific principles of circadian rhythms. It helps you adjust your body's internal clock to new time zones by providing specific advice on when to expose yourself to light and when to avoid it, aiming to reduce symptoms like insomnia and sleepiness.

How does Timeshifter use circadian science?

The app leverages the understanding that light is the primary cue for your body's circadian clock. It provides tailored recommendations for light exposure and avoidance, timed precisely to help your internal clock synchronize with your destination's time zone, addressing the root cause of jet lag.

Is Timeshifter free to use?

Your first jet lag plan is provided for free with no commitment. After that, you can choose to purchase individual plans as needed or opt for a subscription to get unlimited plans for all your travels.

What kind of advice does the app offer?

The app offers practical advice that considers your real-world schedule, thanks to its Practicality Filter™. This includes guidance on light exposure, sleep timing, and pre-travel adjustments to help you prepare for your journey and minimize jet lag symptoms.

Who is Timeshifter intended for?

Timeshifter is designed for healthy adults aged 18 and older who frequently travel across time zones. It is not intended for pilots and flight crew on duty. The app aims to help users conquer jet lag and improve their travel experience.