When the cantonal police switch on the warning light, your iPhone vibrates. Otherwise not.


The Apple Watch shows the warning-light status of your active lake right on your wrist. One glance is enough. No phone fishing in your dry bag.
On-water mode keeps the status visible while you sail, surf or foil. When the level changes to strong wind or storm, the watch vibrates and the display wakes.
The watch checks the status every 2 min. The fastest channel remains the push to your iPhone (seconds after the light changes). Watch is the glance, iPhone is the alarm.

Windy and MeteoSwiss tell you in the morning what the wind will do. LakeAlert vibrates your iPhone when the cantonal police turn on the warning light. Two different jobs.
Sailors use both. One app for planning, one for alerting.
Für Segler, Windsurfer, Kiter, Foiler.
LakeAlert collects nothing. Because it doesn't need to.
Kostenlos. Privat finanziert. Bleibt so.
Wir melden in Sekunden, nicht in Minuten. Nie garantiert. Wenn du die Leuchte direkt sehen kannst, zählt der Sichtbefund.
The system does not replace seamanship. It is an additional channel. Not the only one.