# Time Transit — Beat Jet Lag, Scientifically. > Personalized circadian rhythm adjustment plan to combat jet lag. (iPhone/iPad app by Ethan Macanas.) - Source: https://appshunter.io/ios/app/time-transit/id6761196877 (this page in markdown: same URL + `.md`) - Developer: [Ethan Macanas](https://appshunter.io/developer/1518524442) - Category: Travel, Health & Fitness - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 26.0 · 1 MB - Languages: English - Released: 2026-03-31 - Data updated: 2026-06-26 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/time-transit/id6761196877/reviews.md ## What is Time Transit? Time Transit turns the science of circadian biology into a simple daily protocol — so you arrive sharp, not struggling. Most jet lag advice is generic. "Drink water. Avoid alcohol." Time Transit is different. It builds a precise, personalized adjustment plan based on your exact flight: departure city, arrival city, departure time, and the direction of your journey. Every action in your plan — from when to seek morning light to when to take a low-dose melatonin — is timed to your specific circadian window. HOW IT WORKS Time Transit models your circadian rhythm using the same principles chronobiologists use in clinical research. It calculates your optimal light exposure windows, caffeine timing, nap restrictions, and melatonin dose schedule based on your flight parameters. Your protocol begins up to three days before departure and continues through your first days at your destination. Push notifications arrive exactly when each action is due — so you don't need to think. Just act. YOUR DAILY PROTOCOL • Light Exposure — Morning bright light is the most powerful time-cue in the human body. Time Transit tells you exactly when to go outside and for how long based on your current phase position. • Caffeine Timing — Caffeine shifts your circadian clock depending on when you take it. Your plan specifies an optimal first-coffee window for each travel day. • Melatonin Protocol — At low doses (0.3–0.5mg), melatonin is a circadian signal, not a sedative. Time Transit calculates the right dose window for your direction of travel. • Sleep Scheduling — Your target sleep and wake times shift gradually before your trip and continue adjusting at your destination. • Light Avoidance — Bright light at the wrong time can shift your clock in the wrong direction. Your plan tells you when to dim lights and step away from screens. THE SCIENCE Time Transit is built on published circadian research and phase-response curve modeling. The underlying methodology is used by professional sports teams, airline pilots, and clinical sleep medicine practitioners. This isn't a wellness app — it's a precision instrument. DESIGNED FOR Frequent business travelers who need to perform on arrival. Vacationers who refuse to lose days to grogginess. Athletes crossing time zones for competition. Anyone crossing 3 or more time zones. PRIVACY Time Transit operates entirely on-device. No account required. Your trip data, sleep schedule, and location information never leaves your phone. ## Key features - Personalized adjustment plan - Circadian biology science - Optimal light exposure timing - Caffeine timing guidance - Melatonin dose schedule - Sleep scheduling - Light avoidance advice ## Frequently asked questions about Time Transit ### 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. ## Version history (last 2 releases) ### 1.0.1 — 2026-04-14 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. ### 1.0 — 2026-03-31 No release notes. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-26.*