Marine Metrics
Tide charts, highs and lows
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Marine Metrics is a clean, dark tide app for surfers, anglers, boaters, kayakers and anyone who plans around the water.
Open it and you see where the tide is now, whether it is rising or falling, and when the next high and low arrive. Drag across the curve to read the height at any hour.
TIDES FOR ANY COAST
• Tide heights, high and low times, for almost any coastal point in the world
• United States waters are predicted from NOAA's official tide stations
• Everywhere else is covered by a worldwide harmonic tide model
• Inland? The app finds the nearest coast for you and says how far away it is
A CHART YOU CAN READ
• A smooth tide curve with a NOW marker
• Drag along the chart to read the height and trend at any hour
• A 24-hour profile for each day, with every high and low marked
THE REST OF THE DAY
• Sunrise and sunset
• Sea-surface temperature from NOAA satellite observations
• An hourly table of tide height, trend, wind speed and wind direction
YOUR SPOTS
• Search beaches, harbours, marinas and towns by name
• See tide spots near you
• Save your favourites for one-tap access
• Set a spot to open on launch, or use your location
YOUR UNITS
• Feet or metres, °F or °C, and knots, mph or km/h
PRIVATE
• No account and no sign-in
• No ads, no analytics and no tracking
• Location is optional and rounded to about a kilometre before it is used
MARINE METRICS PRO
Everything above is free. Pro adds:
• A 7-day tide outlook (free shows today)
• Home Screen widgets: the next high or low, and today's tide curve
• Up to 20 saved spots (free keeps 3)
• Alternate app icons
Pro is an auto-renewing subscription, billed monthly or yearly. A free trial may be available for new subscribers. Payment is charged to your Apple Account when you confirm the purchase, or when the free trial ends. The subscription renews automatically unless you cancel at least 24 hours before the end of the current period. Manage or cancel it anytime in your App Store account settings. Pro supports Family Sharing.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://lhennessy.github.io/marinemetrics-legal/
IMPORTANT: Tide heights and times are predictions from a harmonic model, not live measurements. Actual water levels can differ because of weather, storm surge and local conditions. Marine Metrics is for general information only. It is not navigational data. Do not use it for navigation or for decisions affecting safety at sea.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Fixed issue where the the tide data was not updated when the location access was granted
The developer, Kurmudgeon, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Liam Hennessy
- Size
- 12.9 MB
- Category
- Utilities
- Compatibility
Requires iOS 26.4 or later.
- iPhone
Requires iOS 26.4 or later. - Mac
Requires macOS 26.4 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.4 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Tides Pro Annual $17.99
- Tides Pro Monthly $2.99
- Copyright
- © 2026 Liam Hennessy
