Krona Tidewater
24 h of tide, waves, wind and a verdict tuned to your preferences at each spot.
Krona Tidewater draws the sea at your spot as a 24-hour ring: in the app, in the Wear OS app and on a watch face.
A custom conditions verdict for your spot, 24 hours ahead. Every hour scored from No-go to Excellent by your own preferences: swell height, swell period, wind, tide height, water and air temperature, swell and wind directions, gust tolerance, hard limits. Weighted by what matters for your sport: surfing, kitesurfing, windsurfing, sailing, paddling / SUP or swimming. Presets for every sport included.
Drag along the ring to read any moment. A 3-day chart under each page. 24-hour or 12-hour ring.
Watch app and watch face
Watch app with the same three rings, crown scrubbing. Watch face with the tide curve and the verdict, installed from the app on Wear OS 6 and newer (older watches: separate free download). Complications: water temperature, next high or low tide, spot, date, weather warnings. Subscribers: the three rings as tiles beside the watch face.
Widgets for phone and watch
Tide, waves and shore weather on your home screen and beside your watch face, with a subscription.
- Tide & verdict ring: the verdict, the tide and the next high or low, with the clock
- Wind & waves ring: swell, total seas, period and wind
- Shore weather ring: air temperature, weather, UV and water temperature
Runs on any watch with Wear OS 5.0 or newer, paired with a phone on Android 8 or newer. The FAQ lists the supported watches.
FREE
Free at one fixed spotThe whole app at one fixed example spot, Hossegor in France: every page, presets and tuning, the watch app and the face. No time limit. Your own spot: subscription required.
SUBSCRIPTION REQUIRED
$2.99 / month · $17.99 / year- Your own spots: search a beach, break or marina
- Move a spot on the map to its exact position
- Widgets: tide, waves, shore weather — on the phone's home screen and as tiles on the watch, plus a 24-hour chart widget for each page
Monthly or yearly, 7-day free trial, cancel anytime in Google Play.
WEATHER WARNINGS
The national weather service's official warnings at your spot, in its own words, on the ring, on the watch and as a notification (the US, Canada, most of Europe and many more countries).
ACCURACY
Weather, wave and tide data can be unreliable. Krona depends on the accuracy of its providers' data: tides from WorldTides, waves, swell and water temperature from Open-Meteo Marine, shore weather from Open-Meteo. The verdict is only as good as its inputs. Forecast data updated every 3 hours. No sea data where no wave model or tide station reaches.
PRIVACY
No account, no ads, no tracking. No background location access. Your position is used only when you tap "Add my current location". Server data tied to one anonymous ID, stored only as a coarse grid cell, deleted after 90 days; deletable at any time via the form the app links to. Weather warning notifications, when on: your spot and a notification ID are kept on our server, without your Data ID, until you switch them off.
Prices are in US dollars; Google Play shows them in your own currency. Not for you? Within 48 hours of a purchase you can request a refund from Google Play. After that, just email us.
A listing of its own, for watches that install faces from the store.
Krona Tidewater Watch Face
Watch face only. Needs the Krona Tidewater app; on Wear OS 6+ the app adds it.
THIS IS NOT THE KRONA TIDEWATER APP
This is only the watch face. It needs the Krona Tidewater app on your phone and watch, which supplies the sea data. On newer watches (Wear OS 6 and up) the app installs this face by itself. Without the app the face shows only the time, the date, the battery and a note to install the app.
- Wear OS 6 and newer: install only Krona Tidewater; you do not need this download.
- Wear OS 5 and older: install Krona Tidewater, then this face.
THE FACE
Your spot's day as a ring around the dial: the tide inside, the verdict outside, every hour colored from red (No-go) to blue (Excellent) by your own preferences, a marker at the current time. 24-hour or 12-hour dial. Complications: date, water temperature, next tide, spot.
Krona Tidewater is free at one fixed example spot; your own spots need a subscription. The face itself collects no data.