Cadence helps pilots anticipate fatigue, visualize circadian highs and lows, and prepare for challenging pairings using circadian science.
Built by an airline pilot. Designed for real-world crew pairings.
Visualize your circadian rhythm. Prepare for every flight.
You can sleep eight hours and still feel exhausted if your duty happens during your biological night. Cadence helps make that invisible body-clock mismatch visible.
How much restorative sleep you actually got, not just time in bed.
Your internal body clock that cycles between alertness and sleepiness.
The accumulating drive to sleep that builds the longer you stay awake.
See when you'll be naturally sharp and when fatigue may rise.
Know which duty segments will challenge your alertness most.
Sleep, light, caffeine, and nap strategies tailored to your pairing.
Designed for night pairings, early reports, and time-zone shifts.
Adjust your rhythm in advance to reduce the shock of night operations.
Know exactly when your body will want to sleep during duty.
Time your countermeasures for maximum effect.
Understand the science behind your fatigue to manage it better.
Cadence is being built by Guillaume de Roquefeuil, an airline pilot studying circadian science and aviation fatigue. The goal is simple: make body-clock science practical for pilots and crew facing early reports, night duties, reserve, and time-zone shifts.
Future short visual lessons to help you understand and manage fatigue.
Future integrations with Apple Health, Apple Watch, Oura, WHOOP, and sleep apps will help personalize Cadence recommendations while keeping users in control of their data.

Real-time alerts on your wrist
Get timely reminders to dim lights, take naps, or adjust your environment for optimal rest
Works with your existing wearables and health apps to provide personalized insights
Fully optional — always private and under your control.
Private by default
Never shared with airlines or authorities
You control what you track and what you share
Join the early-access list and help us build Cadence around real pilot and crew needs.
We're building the first version of Cadence and giving early users exclusive free access plus lifetime discounts on future premium features.
Pilots and crew are already joining the early-access list.