Tide Alert is the #1 app for tide predictions, tidal currents, and lunar phases, all in one beautiful interface. Powered by NOAA tide forecasts, it delivers accurate high tide and low tide times, current speeds, slack tide windows, swell data, water temperature, and wind conditions for thousands of stations along the US coastline.
Set custom alerts for high tide, low tide, or any tide level you choose and never miss a window again. With full offline support, your tide data is always available, even without cell service.
What's New:
Tidal Currents & Slack Tides
• View real-time tidal current speed overlayed on the tide chart.
• See slack tide periods with estimated begin and end times.
• Current data sourced from NOAA current prediction stations.
Compare Tide Charts
• Compare multiple stations side by side.
• Add stations to compare directly from the map.
Monthly High & Low
• Redesigned monthly view with visual tide range bars.
• See the month's lowest, highest, and average tidal range at a glance.
Apple Watch
• New ocean conditions view with wind, swell height, water temperature, and current speed.
• Tap the wave icon on the main screen to check conditions instantly.
Wind, Swell & Water Temperature
• Hourly wind speed, gust, and direction forecasts.
• Swell chart with height, period, and direction.
• Water temperature from NOAA and Open-Meteo.
Who is Tide Alert for?
Anyone who needs to know the tides. Fishermen timing their catch. Surfers checking swell and tides together. Kayakers and paddleboarders planning safe launches. Boaters and sailors navigating harbors. Crabbers and clammers working low tides. Beach photographers chasing golden hour at low tide. Dog walkers, birdwatchers, and tide pool explorers. Divers planning slack water entries.
Key Features:
• Tide predictions for thousands of NOAA stations across the US.
• Tidal current speed and slack tide annotations on the chart.
• Custom tide alerts — get notified for high tide, low tide, or any level.
• Full offline access to tide data and charts for favorite stations.
• Interactive map with station discovery and quick actions.
• Compare tide charts across multiple stations.
• Monthly high & low tide overview with daily range bars.
• Wind, swell, and water temperature conditions.
• Sunrise, sunset, moonrise, and moonset on the chart.
• Moon phase calendar.
• Apple Watch app with tide chart, conditions, and complications.
• Home Screen, Lock Screen, and StandBy widgets.
• iOS Shortcuts and Siri voice commands.
• Customizable chart symbols and reference levels.
• Supports all US time zones and daylight saving time.
Tide Alert is free to try with all features available during the trial period. After the trial, a subscription is required to continue.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
DISCLAIMER — See https://tidealert.app/disclaimer.html
Use Tide Alert at your own risk. Tide data does not account for the effects of wind, storms, rain, freshwater runoff, or floods. The tide graph uses predicted high and low tide events with approximated segments between them. Do NOT use Tide Alert for NAVIGATION or any purpose that may result in personal injury or property damage. Tide Alert is not liable for any loss, injuries, or damage caused by its use. Tide Alert is not associated with NOAA.
We have waterfront property so I’ve been using tide apps for a long time. I was settled on one app until I tried this one. It gives you everything you need and more. I love the “show reference level” option. Just tell it what tide level you are interested in and it will draw a line across the chart at that level. We have oyster bags on our beach and the tide has to be 3.6’ or lower to access them. That reference line not only shows me where the tide is at in relation to the line but is also gives you the times when the tide will be below that line. I also love the widgets as my Apple Watch now tells me what the current tide level is and if it’s coming in or going out. The app also tells you when the next high or low tide will be and even calculates how much time until that happens. The reference line and widgets sell it for me.
Great but could be better
whitedaisy15
I am just an ordinary person, not a scientist, but I do have an interest in the tides. We live by the water and it’s cool to see when there’s a high-high or a low-low. It would be awesome to view this info in a chart like someone else suggested, because in the summer especially we love to go out into the Puget sound at a low-low because you can go really far out at Alki in Seattle. Makes for a fun family day. But I need the chart so I can view this info ahead of time to plan better. Would be great to also have with the sunrise/sunset. Since we are watching the moon and it’s phases, an additional cool feature would be to show which stars/planets we would see on a particular night. There are many other stars apps to use tho. I really am interested in which planets I will see in the sky especially when they are close together (like recently there was Jupiter, Saturn, mars! All within the night sky, big and bright. Thanks NOAA for amazing info tho on all of your sights/apps. My brother showed me MyRadar (he is a pilot and uses this info). I love the different layers on it.
I didn’t want to post this
MoonUnit137
First: This is a GREAT app. I tried all the tide apps I could find and this is the most beautiful, one of the few with alerts, has a great widget, and is just what I need. HOWEVER: After opening it the first couple of times, and setting a couple of options, it crashes on every open. I’ve removed it and reinstalled it and just can’t get it to open. I’ve a newish iPhone (Xs) and few other apps. This has been a problem for months through any software updates along the way. Interestingly, the widget still works, so I still find it useful even though I can no longer use the app itself or change any of its settings. I’d love to ask the Tide Alert team if there is any reason this might be happening. I’d rather have emailed this directly to the app’s tech support team, but I could find no way to reach them. I do strongly suggest you try this app. It’s only the app that crashed for me (every time when I try to launch it), nothing else is effected and the rest of my phone continues working fine. If it works for you as it seems to for most people, I suspect you will like it a lot.
Developer Response
Thank you for the feedback and we are sorry for the inconvenience. We have recently made a number of improvements to both Apple Watch app and iPhone app. We have also fixed the crash issue in the previous version. If you have any other feedback or concerns please write to us at feedback@rivolu.com
Love this app!
Jacob Wilkims
This may very well be the most useful app on my phone. I live in Pawleys Island and I love walking on the beach in the evenings looking for shark’s teeth and shells. I used to google search tidecharts and usually had to search quite awhile to find the information I was looking for. Even then, it was sometimes confusing and hard to read, as most of it was really geared towards fishermen who probably needed a lot more info than I did. With this app, I can pinpoint and save all of my favorite locations, see sunrise/sunset times, and just drag my finger across the screen to find the ideal times to head out. I’ve been using it for a few months now and it has been completely accurate every time- I literally use it every day.
This update contains a number of new features and improvements.
- View tidal current speed on the tide chart.
- See slack tide periods with estimated begin and end times.
- Control visibility from Settings
- Compare Tide Chart redesigned with improved curves and interactions.
- Add stations to compare directly from the map.
- Monthly High & Low updated with visual tide range bars
- More actions available from station options on the map.
- Bug fixes and stability improvements
Apple Watch
- New conditions view with wind, swell, water temperature, and currents.
- Bug fixes and stability improvements.
Version 3.3
The developer, Rivolu LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Identifiers
Usage Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
