Circadian Planning for Airline Pilots and Flight Crews
Zeitfarer is a circadian planning tool engineered for airline pilots and flight crews, grounded in published circadian and melatonin research rather than rules of thumb. It models precisely how your body clock drifts and re-entrains across time zones, weighing the rest break you actually draw in the bunk or seat rather than the itinerary on paper. The result is one continuous plan for sleep, naps, light exposure, meals, melatonin timing, and exercise that travels with you from the moment you head out the door, through every leg and layover, until you touch back down at home on your own clock.
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Jet lag isn’t just discomfort. For crew, it’s an alertness problem.
A transpacific rotation can drift your body clock by hours a day. Left alone, that shows up as fatigue on the flight deck, not just a rough night in a hotel. Zeitfarer is built on published circadian and melatonin research, not a generic "beat jet lag" listicle, to give you a plan that is actually trying to solve the operational problem.
How it works
1
Add your trip.
Enter your flights and layovers. Zeitfarer already knows your home airport, crew base, and typical sleep pattern from your profile.
2
Get a day-by-day plan.
A full schedule of sleep windows, naps, light exposure, meals, melatonin timing, and exercise, built around your actual itinerary, with commute, deadhead, and commuter hotel legs included.
3
Follow it through report and layovers.
The Now tab always shows exactly where you are in the plan: what is happening now, what is next, and when your next report time is. You are not re-deriving the schedule preflight or mid-layover.
Built for how crew actually operate
NOW
Your current phase at a glance: what to do now, what’s up next, and a live countdown to your next report time.
FLIGHTS
Built for the flight deck, not the boarding gate.
Commuter hotels, deadhead positioning, and per-leg overrides are modeled natively, and every recommendation is grounded in the current published circadian and melatonin science. A professional tool for professional aviators, not a repackaged travel app with pilot terms bolted on.
Why the name Zeitfarer?
The name fuses two words. A zeitgeber, German for "time-giver," is chronobiology's term for a cue like light, a meal, or exercise that resets your clock. Those cues are exactly what this app schedules. A wayfarer is a traveler who journeys far under their own power. Join them and you get Zeitfarer: a traveler who works with their time-givers instead of against them.
Your data stays yours.
Zeitfarer collects nothing. No account, no login, no analytics. Everything you enter stays on your device. The app contacts Apple's App Store only to unlock or restore a purchase, and nothing else. Read the full Privacy Policy.
A note on scope
Zeitfarer is a planning aid grounded in circadian science, not medical advice. Treat its plan as a well-reasoned starting point and adjust to how your own body responds.
Documents
The manual walks through the app one tab at a time. The science document explains the model and every source behind it.
User Manual
Every tab and every control, with pictures. Updated for the current build.
Download PDF
The Science Behind Zeitfarer
The model, its sources, and the published research behind every number.
Download PDF
Request Beta Access
Limited spots — join now by clicking above.