Slackwater: Tides & Weather

Slackwater: Tides & Weather

3,600+ NOAA tide stations

1 ratings
Free
In-App Purchases

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Details

Released
July 7, 2026
Updated
September 24, 2026

Features

Slackwater: Tides & Weather screenshot #1 for iPhone
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About

Get real-time tide and weather information for over 3,600 NOAA stations. Plan your water activities with detailed forecasts, wind data, and fishing times. Save favorite spots for quick checks and utilize home-screen widgets for instant updates.

✓Real-time tide levels
✓7-day tide charts
✓Wind and precipitation forecasts
✓Solunar fishing times
✓Sunrise/sunset and moon phase
✓Home and lock screen widgets
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What's New in Slackwater

2.3

September 24, 2026

Slackwater comes to Apple Watch. • Tides on your wrist: the water level against the prediction, where you are in the cycle, and when it goes slack — with the next turn counting down. • Turn the Digital Crown to scrub the tide curve, a full day back. • Complications for every face: the level and trend with a cycle gauge, plus Smart Stack cards for the tide and the curve. Pick any favorite per slot. • Track a tide from your phone and it follows you to the watch. • Works on its own: favorites sync from your iPhone, and the last tide stays cached for when you're out of range. Also in this version: • A monthly plan alongside yearly, both with a 7-day free trial. • Read Slackwater Dispatch inside the app. • The map's side controls are easier to tap.

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Subscriptions & In-App Purchases

Slackwater Pro

Unlocks all Slackwater features for one year.

$4.991 Year
7 Days trial
How to cancel Slackwater subscription ⁉️

Developer apps

FAQ

What is Slackwater?

Slackwater is a weather app that provides real-time tide information, wind and precipitation forecasts, and fishing times for over 3,600 NOAA tide stations. It is designed for planning recreational water activities.

Does Slackwater have ads?

No, Slackwater is ad-free. The app is designed with privacy in mind and does not include advertisements or tracking.

How much does Slackwater Pro cost?

Slackwater Pro is available for $4.99 per year and includes a 7-day free trial. This subscription removes ads and supports the app's services.

Can I cancel my Slackwater Pro subscription?

Yes, you can manage or cancel your Slackwater Pro subscription at any time through your Apple ID settings. Auto-renewal can be turned off at least 24 hours before the current period ends.

What devices support Slackwater?

Slackwater is supported on iPhone and iPad devices. It is available for download on the App Store.

How often is Slackwater updated?

Slackwater was last updated on July 16, 2026, with version 1.2. The app receives regular updates to improve functionality and data accuracy.

What data sources does Slackwater use?

Slackwater uses data from NOAA, the National Weather Service, and the U.S. Naval Observatory. Radar data is provided by RainViewer, and forecast grids are from Open-Meteo.

Is Slackwater suitable for navigation?

No, Slackwater is intended for planning and recreation only. Tides and weather information provided are not for navigation or safety-of-life decisions. Always check official sources before heading out.