Lake, river or ocean: temperature, BrrScore and water quality for 7,800+ spots worldwide – before you dip a toe in.
Download on the App Store How it works

From a morning dip in the lake to a session at the sea – BrrChecker has the answer.
Current water temperature plus an animated history over 7, 14, 30 days or the whole season.
An honest number from 1 to 10 per activity – swimming, SUP, kayak, surfing, windsurfing, kiting. New in version 1.2.0.
EU classification, E. coli, enterococci and water clarity – explained in plain language.
Your favorite water on the home screen and Apple Watch – without opening the app.
Tell me when the lake tops 20° – the app pings you by itself.
Beaches, parking, restaurants and pools on the map – including Look Around.
Water temperature, weather, wind and waves, distilled into one honest number from 1 to 10. No more guessing whether the trip to the lake is worth it.
Because swimming isn't everything, the BrrScore rates each sport on its own – calm water for swimming, SUP and kayak; wind and waves flip the score for surfing, windsurfing and kiting. A tap shows you exactly how the number is made: water, air, surface, sun. No black-box algorithm.
🛟 Safety first – and always free: where authorities publish a blue-green-algae or storm warning, the BrrScore caps the number automatically. You see a swim ban right away, without Pro.

Real screens, real data – from river pools to the Mediterranean.
BrrChecker keeps growing – new regions, new features.
Pricing varies by country and currency (UK: £3.99/year) – your App Store price applies. Free stays free – forever. Cancel Pro anytime in your App Store settings. Your launch price never goes up.
From 33 official and open sources across 62 countries: BAFU (CH), Kanton St. Gallen (CH), wiewarm.ch (CH), IGKB (Bodensee), GKD Bayern (DE), PEGELONLINE (DE), LANUV NRW (DE), Wasserportal Berlin (DE), Badegewässerkarte Sachsen-Anhalt / LAV (DE), Badegewässer Schleswig-Holstein / Open Data SH (DE), Badegewässer Hamburg / BUE-BUKEA (DE), Badestellen Berlin / LAGeSo (DE), AGES (AT), Hydrographie Kärnten/OÖ/Salzburg (AT), Rijkswaterstaat (NL), IMGW (PL), ARSO (SI), Hub'Eau (FR), USGS (US), OVF / vizugy.hu (HU), SYKE (FI), SMHI + HaV Badplatsen (SE), Environment Agency (GB), OPW / waterlevel.ie (IE), NVE HydAPI (NO), NOAA NDBC (US), Great Lakes Observing System (US), NOAA CO-OPS (US), Ministère chargé de la Santé / Atlasanté (FR, Licence Ouverte), Eawag/Alplakes lake models, the Open-Meteo marine model and DHMZ (meteo.hr). Water quality comes from the EEA.
BrrChecker is free to use: current water temperatures worldwide, search and 7-day history. BrrChecker Pro ($4.99 per year – about 40 cents a month) unlocks unlimited favorites, full history, all sports, the surroundings map, coastal tides, widget, Apple Watch, alerts and water quality. Cancel anytime in your App Store settings. The $4.99/year launch price stays yours for as long as you subscribe – future increases only affect new customers. With Apple Family Sharing, one subscription covers the whole family.
Over 7,800 measuring points in 62 countries: lakes, rivers and bathing spots across Europe, Mediterranean and Atlantic coasts, the Caribbean, North America's Great Lakes and popular beaches worldwide – from the Algarve to Thailand. The network is currently densest in the Alps and the Netherlands, and it keeps growing.
The widget shows the last loaded values and refreshes automatically in the background once you're back online.
Get BrrChecker and find out if your favorite lake is calling today.
Download on the App Store