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SeaNav US
View US marine charts, plan routes and exchange waypoint files, with optional connected marine information.
Choose as an additional chart-reference and planning tool.
Offline charts and GPX exchange connect mobile review with compatible chart workflows.
Keep in mind: The developer labels it not for navigation and says not to rely on it alone; chart currency, GPS and connectivity matter.
Inside the app
Official product images
What you can do
- US chart viewing and route planning
- Offline chart access and GPX exchange
- Optional AIS integration, AR view and Watch companion
Good for
- Boaters using additional planning references.
Consider alternatives for
- People relying on one phone app as their sole navigation system.
Limitations & considerations
- Captured minimum: iOS 15.6.
- The developer labels it not for navigation and says not to rely on it alone; chart currency, GPS and connectivity matter.
Privacy & permissions
Routes and background GPS expose travel locations; connected AIS and weather use network services.
Sources & review notes Updated Nov 11, 2026
Reviewed by iApp4Me Editorial Team. Recommendations use the linked documentation and attributed accounts; device observations are identified separately.
- US App Store developer description
Complete description, download price and compatibility metadata captured 2026-11-02.
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