# The Jetlag Fix — Jetlag solved. > Personalized jetlag solution based on circadian science and light exposure. (iPhone/iPad app by Circadian Health Innovations.) - Source: https://appshunter.io/ios/app/the-jetlag-fix/id6760099824 (this page in markdown: same URL + `.md`) - Developer: [Circadian Health Innovations](https://appshunter.io/developer/1742411829) - Category: Travel, Health & Fitness - Price: Free - Rating: 5.00/5 from 4 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 26.2 · 18 MB - Languages: American English, Chinese (Simplified, China), Chinese (Traditional, Taiwan) - Released: 2026-08-22 - Data updated: 2026-10-11 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/the-jetlag-fix/id6760099824/reviews.md ## What is The Jetlag Fix? Stop guessing how to beat jetlag. Start using the science. The Jetlag Fix turns decades of circadian rhythms research into a simple, personalized plan for your body clock. Enter your flight, and the app tells you exactly when to seek light, when to avoid it, and when to sleep so your internal clock aligns to your destination faster. WHY LIGHT IS THE ANSWER Your body clock doesn't run on willpower. It runs on light. Light exposure at the right time pulls your clock forward or back. At the wrong time, it pushes it the opposite way and makes jetlag worse. Most travel advice ignores this entirely, which is why most travel advice doesn't work. The Jetlag Fix is built on mathematical models of the human circadian system developed by leading sleep and circadian scientists. It calculates where your body clock actually is, where it needs to be, and the optimal path between the two. WHAT YOU GET Personalised light schedules. Hour-by-hour guidance on when to get bright light and when to stay dim, for the days before, during, and after your flight. Flight-aware planning. Enter your route and the app builds a plan around your real departure and arrival times. Sleep timing that fits your trip. Recommended sleep and nap windows designed to speed adaptation rather than fight it. Pre-travel head start. Begin shifting before you leave so you land already partway adjusted. Clear daily actions. No jargon, no theory to wade through. Just what to do and when. Plans for any direction. Eastward, westward, short hops, and long hauls each need different strategies. The app knows the difference. WHO IT'S FOR Business travellers who need to be sharp on arrival. Holidaymakers who don't want to lose three days of a two-week trip. Frequent flyers, crew, athletes, and anyone who crosses time zones often enough to be tired of feeling wrecked afterwards. BUILT ON REAL SCIENCE Jetlag isn't a vague feeling of tiredness. It's a measurable misalignment between your internal clock and local time, and it affects sleep, alertness, mood, digestion, and physical performance. Circadian science has understood how to correct that misalignment for years. The Jetlag Fix is that knowledge, in your pocket, applied to your specific trip. The app draws on research into individual differences in light sensitivity and real-world light exposure, so the guidance reflects how bodies actually respond to light, not a generic rule of thumb. SIMPLE TO USE Add your flight. Tell us a little about your usual sleep. Follow the plan. That's it. Check the app each day, do what it says, and arrive functioning. WHAT MAKES IT DIFFERENT Most jetlag apps offer generic advice or a countdown timer. The Jetlag Fix models your circadian system directly and adapts to your schedule, your sleep habits, and your itinerary. It also tells you what not to do, which matters just as much. Getting light at the wrong hour can set your adjustment back by a full day. THE PAYOFF Fewer wasted days. Better sleep on arrival. Sharper thinking when it counts. Whether you're flying to a meeting, a match, or a beach, you'll get there ready to use the time. Download The Jetlag Fix and travel like your body clock is on your side. EULA details can be found here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Key features - Personalized light schedules - Flight-aware planning - Recommended sleep timing - Pre-travel adjustment - Clear daily actions - Plans for any direction ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/the-jetlag-fix/id6760099824/reviews.md ### 5/5 — Sri Lanka to LA with way less jet lag *2026-09-09* 12.5 hours of time difference usually wrecks me for over a week, so I wasn't expecting much. This helped more than I thought it would. It gives you a simple day by day plan for light, darkness & sleep, and it was easy enough that I actually stuck with it. The first couple days were still rough, but by day three I felt mostly normal and wasn't fighting to stay awake in meetings, which is a big improvement for me. You do have to follow the light timing for it to work. The reminders help. Wear sunnies when it says no light. Worth it for long distances. ### 5/5 — Amazing! *2026-09-08* This is a game changer for travel! My jet lag was so much better using the strategies in the App. Will use again for my next trip. ## Frequently asked questions about The Jetlag Fix ### How does The Jetlag Fix work? The Jetlag Fix uses scientific models of your circadian system to create a personalized plan. It tells you exactly when to seek or avoid light and when to sleep to align your body clock with your destination. ### What kind of information do I need to provide? You need to enter your flight details, including departure and arrival times, and provide some information about your usual sleep habits. The app then builds a plan around this data. ### Can The Jetlag Fix help with eastward and westward travel? Yes, The Jetlag Fix creates different strategies for eastward and westward travel, recognizing that each requires a distinct approach to adjusting your body clock. ### Does The Jetlag Fix offer a free trial? The app is free to download and use, with in-app purchases available for advanced features or full functionality. Specific details on what is included in the free version versus paid options are available within the app. ### How often is The Jetlag Fix updated? The latest version is 1.0, and it was last updated on August 23, 2026. Updates typically focus on refining the scientific models and improving user experience based on scientific advancements and user feedback. ### Is The Jetlag Fix suitable for children? The app has an age rating of 4+, making it suitable for a wide range of users. The guidance provided is based on general circadian science principles. ### What makes The Jetlag Fix different from other jetlag apps? Unlike generic advice or simple timers, The Jetlag Fix directly models your circadian system and adapts to your specific itinerary and sleep habits. It also emphasizes the importance of avoiding incorrect light exposure, which can worsen jetlag. ### What devices does The Jetlag Fix support? Currently, The Jetlag Fix is supported on iPhone devices. Future platform expansions may be considered based on user demand and development resources. ## Version history (last 1 release) ### 1.0 — 2026-08-23 No release notes. ## More apps by Circadian Health Innovations - [MiEye](https://appshunter.io/ios/app/mieye/id6499090691) - [MiEye Sync](https://appshunter.io/ios/app/mieye-sync/id6751867394) All apps by Circadian Health Innovations: https://appshunter.io/developer/1742411829 --- *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 2026-10-11.*