Swiss Lake Navigation
Built for Swiss Waters.
Everything you need for a day on the lake.
Download on App Store See features →
All major 8 lakes
All lakes covered within one single app
Point to point nav
Offline A→B routing
Wind overlay
Named winds & gusts
Zone overlay
Restricted zones & dynamic sport zones
LacNav map view
LacNav
LacNav
Built for Swiss waters
Get Started  →
Built for Swiss waters
Every lake. Every zone.
Every condition.
Dynamic sport spots New
Our proprietary formula calculates the best watersport spots based on current wind, weather, and lake conditions — for selected lakes.
Uferzone & speed alert
Every shore protection zone mapped and bundled offline. Audible tone and on-screen warning trigger the moment you exceed the speed limit inside a zone.
Weather at a glance
Wind, water temp, wave height, UV index, 6-hour forecast, and thunderstorm warning — all on one screen.
Weather overlays
Wind & current overlay (selected lakes), live rain radar refreshed every 10 min.
POI & ferry routes
Fuel stations, restaurants, marinas for all 8 lakes — tap any POI for navigation. Ferry routes on the chart.
100% offline
Download your lake once. Charts, zones, POI, and last-known weather — no signal needed.
Feature screenshot
Lake coverage
8 lakes.
All the right ones.
Zürichsee
Zones · ZSG routes · live weather
Fully implemented
Lake Geneva
Bise · Séchard · 72 km fetch
Live weather
Lake Constance
Bise · Föhn · 63 km fetch
Live weather
Lake Lucerne
Föhn · channelled · sudden gusts
Live weather
Thunersee
Valley Föhn · BAFU temp
Live weather
Brienzersee
Föhn gusts · glacial melt
Live weather
Lago Maggiore
Tramontane · 65 km fetch
Live weather
Lago di Lugano
Tramontane · N cold & dry
Live weather
Simple pricing
Buy it once.
Use it every summer.
One-time · No subscription · Ever
LacNav Pro
All 8 lakes · All features · Forever
CHF 49.99
One payment · Own it forever
All 8 lakes — Zürichsee, Léman, Bodensee + more
Live GPS with Uferzone speed limit detection
Full weather — wind, UV, water temp, wave height, lightning
Named wind alerts — Bise, Föhn, Séchard, Tramontane
Rain radar · Ferry routes · POI overlays
Offline maps — works without mobile signal
DE · FR · IT · EN — all four Swiss national languages
All future lake additions included free
Free to download · Try Zürichsee before you buy