Tides from anywhere in the world
Predictions on any coast, calculated with reference oceanographic models and official data in the United States (NOAA). Look up a station once and it stays available offline.
The world's tides, in your pocket.
Check the state of the tide anywhere on the planet. No ads, and what you've already looked up works without signal too.
Available in Spain. More countries soon.
Tide in Santander
Spain · real tide gauge (TICON-4, DGFI-TUM)
From today to next month
Check today's tide, or look ahead to see how it will be next week or next month.
Tap the map and get the tide instantly
No station nearby? Tap any point of the sea and calculate its tide right away.
Everything about the sea, at a glance
The day's tide curve, tidal coefficient, next high and low tide, sunrise and sunset, moon phases and water temperature.
Widget on your home screen
Check the next tide without even opening the app.
Your nearest station, automatically
Turn on location (it's optional) and you'll see the closest real station every time you open the app.
Built with your privacy in mind
No accounts, no ads and no third-party analytics. Your exact location never leaves your device: only an approximate version travels — about 3.7 km to calculate the tide and about 100 m to look up the place name — and it is never linked to any profile.
Where the data comes from
Predictions are computed from reference oceanographic models and real tide gauges; in the United States, from official NOAA data.
Accuracy is good on open coast and more limited in estuaries and rías. SimpleTides must not be used as a navigation instrument.
Support the project
SimpleTides is an independent project and, for now, not monetized. If you'd like to support it, you can donate:
