FlöFuel is a cycling nutrition app for iPhone and Apple Watch. It calculates when and what to eat and drink during rides based on your intensity, duration, temperature, and body weight, then alerts you with haptic notifications so you never bonk.
FlöFuel uses your approximate location (city-level only) to check the current temperature. Hot weather increases your hydration and sodium needs. You can deny location access and FlöFuel will use a moderate temperature default.
FlöFuel can read your body weight from Apple Health to personalize hydration targets. This is optional — you can enter your weight manually in Settings instead.
No. All data stays on your device. FlöFuel has no servers, no accounts, no analytics, and no ads. See our Privacy Policy.
Uninstalling FlöFuel removes all app data from your device. There is no server-side data.
Make sure both devices are nearby and the Watch app is installed. Open Settings in FlöFuel on iPhone to check pairing status. Programs sync automatically via WatchConnectivity.
Open FlöFuel Settings and check that notifications are authorized and Time Sensitive notifications are enabled. Time Sensitive alerts are needed to break through Focus mode during rides.
Adaptive mode calculates nutrition targets from your ride parameters (intensity, duration, temperature, weight). Manual mode lets you set fixed carb/hydration/sodium targets per hour.
For questions, bug reports, or feature requests:
Read our Privacy Policy.