Time Transit
Beat Jet Lag, Scientifically.
About
This app uses circadian biology science to create a personalized plan to help you beat jet lag. It provides precise timings for light exposure, caffeine, melatonin, and sleep to optimize your adjustment to new time zones.
What's New in Time Transit
1.0.1
April 14, 2026
What's New in 1.0.1 Flight Day View Your travel day now has a dedicated experience. See your flight arc with departure and arrival times in their respective local times, a segmented timeline that switches between origin and destination timezones mid-flight, and a recommended in-flight sleep window when one applies to your route. Notification Reliability Fix Notifications now fire at the correct time even when your device timezone changes mid-trip. Previously, a notification scheduled before departure could shift by the full UTC offset difference after landing — this is now resolved. Airport Coverage Added Kona International Airport (KOA) on Hawaii's Big Island.
MoreFAQ
How does Time Transit work to beat jet lag?
Time Transit models your circadian rhythm using scientific principles to create a precise, personalized adjustment plan. It calculates optimal timings for light exposure, caffeine, melatonin, and sleep based on your flight details and direction of travel.
What kind of science is Time Transit based on?
The app is built on published circadian research and phase-response curve modeling, methodologies used by professional sports teams and clinical sleep medicine practitioners. It's designed as a precision instrument for circadian adjustment.
Does Time Transit require an account or share my data?
No, Time Transit operates entirely on-device and does not require an account. Your trip data, sleep schedule, and location information remain on your phone for complete privacy.
What specific actions does Time Transit recommend?
Time Transit provides guidance on when to seek morning bright light, optimal first-coffee windows, recommended melatonin dose windows, target sleep and wake times, and when to avoid bright light.
How does Time Transit handle melatonin recommendations?
For low doses (0.3–0.5mg), melatonin acts as a circadian signal. Time Transit calculates the right dose window for your specific direction of travel to help adjust your body clock.
What is the update frequency for Time Transit?
The app was last updated on April 14, 2026, with version 1.0.1. This indicates active development and support for the application.
Is Time Transit available on multiple devices?
Currently, Time Transit is supported on iPhones. Information regarding availability on other platforms like Android or tablets is not specified.
What is the age rating for Time Transit?
Time Transit has an age rating of 4+, making it suitable for a wide range of users. This suggests the content is generally appropriate for children and adults.