Keel: Boating GPS & Charts
Depth, Tides & Marine Weather
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Keel: Boating GPS & Charts
Depth, Tides & Marine Weather
Navigate with confidence on the water. Keel brings official NOAA nautical charts, real-time depth calculations, tide heights, and full marine weather forecasts directly to your device.
Know What is Under You
Traditional sea charts display depth based on fixed reference levels, not the current water level. Keel combines official chart data with live tide station updates and your boat's draft to calculate the exact water depth under your vessel right now.
Avoid Hazards and Shallow Water
Set your boat's draft to get clear, automatic hazard alerts before you touch bottom. Shallow regions are highlighted directly on the map so you can choose safe routes with total peace of mind.
Complete Marine Forecasts
Plan your trip before leaving the dock. Access hourly wind speed, wind gusts, wave height, water temperature, tide curves, and sunrise/sunset times for your specific location.
Works Offline Without Signal
Download high-resolution NOAA marine charts for offline use. Navigate seamlessly even when you lose cellular signal out on open water.
Log Your Trips
Keep a record of your time on the water. Automatically track distance, duration, and average speed for every boating outing.
Key Features
Official NOAA nautical charts with live boat positioning
Real-time tide-adjusted depth calculations
Custom draft settings for powerboats, sailboats, pontoons, and jet skis
Shallow water alerts and visual hazard highlights
Hourly marine weather, wind, wave, and tide forecasts
Offline chart downloads for remote areas
Trip recording and activity logs
Important Notice
Keel is designed as a supplementary informational tool for recreational boating. It is not intended for primary navigation. Always maintain a proper lookout, use official paper charts or dedicated navigation equipment, and follow safe boating practices.
Some features, including real-time tide-adjusted depth calculations, shallow water alerts, hourly marine weather forecasts, offline map downloads, and trip recording, may require a paid subscription.
Privacy Policy: https://llabs.top/privacy.html
Terms of Use: https://llabs.top/terms.html
Ratings & Reviews
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We've improved the overall experience in 'Keel: Boating GPS & Charts', making it smoother, faster, and more reliable for all users.
The developer, Nexa Labs, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Nexa Labs LLC
- Size
- 102.3 MB
- Category
- Navigation
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 19 more
- English, Arabic, Dutch, French, German, Hebrew, Hindi, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Pro Yearly $39.99
- Pro Yearly $19.99
- Pro Weekly $5.99
- Copyright
- © Nexa Labs LLC, 2026