Best Depth Finder Marine Apps

Sea Depth

Offshore Bathymetry Charts

Free

Visualize detailed underwater terrain with high-resolution bathymetric charts. Gain deeper insights into seafloor structure, contours, and terrain for offshore activities. Includes optional data overlays and waypoint management for enhanced situational awareness.

Fish Verify－Identifier, Finder

Marine Biology App・Diving Plus

Free

Instantly identify fish species from photos or descriptions using advanced AI. Access detailed information on habitat, behavior, and diet for each identified fish. Explore aquatic life with this beginner-friendly tool, usable online or offline.

HawkEye FishPod SONAR

by NorCross Marine Products, Inc

Free

This smart fish finder app utilizes advanced sonar technology to help anglers locate fish. It offers unmatched versatility and usability, developed with decades of experience in marine electronics.

MarineRadar・Vessel Finder

Marine Traffic Tracker & Info

Free

Track ships, containers, and yachts in real-time globally. Access detailed vessel information, port arrivals, and historical data. Customize notifications and monitor fleets with extensive AIS coverage.

FishFinder

by SUNGCHANCE INTERNATIONAL GROUP LIMITED

Free

This tool aids fishing vessels by providing global ship monitoring, EEZ regional maps, and positioning tools. It allows users to inquire about ships, customize labels, and receive immediate updates on ship information.

SeaVectors: Marine Navigation

Boat GPS, Nautical Charts, AIS

Free

This app provides professional marine navigation with official ENC charts and real-time weather data. It offers advanced instrument displays, alerts for restricted areas and fishing closures, and route planning capabilities for safe and informed voyages.

Keel: Boating GPS & Charts

Depth, Tides & Marine Weather

Free

Navigate waterways with confidence using official NOAA charts, real-time tide-adjusted depth, and comprehensive marine weather forecasts. Receive automatic hazard alerts and plan your trips with offline map access. Log your boating excursions with distance, duration, and speed tracking.

How Deep?

Tap to show water depth at sea

Free

This app displays sea depth or land altitudes with a simple tap. It's ideal for travelers on cruises or hiking adventures, and can optionally track your journey.

Aqua Map Boating

Marine navigation and fishing

Free

This marine navigation app provides official, weekly updated nautical charts for offline use. It offers features like route planning, GPS track recording, tide and current predictions, and anchor alarms. Advanced subscriptions unlock marine forecasts, NMEA instrument connectivity, and local data for enhanced safety and navigation.

Fishidy: Fishing Maps App

Find Hot Spots, Reports & Tips

Free

Discover top fishing locations and gain confidence on the water with detailed maps and expert insights. Log your catches privately, track successful patterns, and receive real-time fishing reports and alerts. Access offline maps and advanced features with a premium subscription.

Fishing Points-Lake Depth Maps

Fish Finder,Gps Fishing Spots

Free

This app provides detailed lake depth maps and marine charts with fishing points for various regions. It features an AI that identifies productive fishing spots based on bathymetry, local knowledge, and weather. Offers advanced GPS navigation with voice prompts, route planning, and tide/current predictions.

Ship Finder Lite

Live Marine & Vessel tracking

Free

Track live moving ships on a global map with near real-time AIS data. Identify vessels using your device camera with Augmented Reality view. See ship details like name, type, and destination with color-coded icons for easy identification.

Hawaii Ocean Map

Hawaiian Islands Depth Maps

$9.99

Explore detailed seafloor topography of the Hawaiian Islands with professional-grade bathymetry data. Access maps offline, tap for instant depth queries, save locations, and navigate to waypoints. Ideal for marine activities with full island coverage and no subscriptions.

Great Depths

by Walk About Apps

Free

This app transforms your iOS device into a digital depth finder. It provides comprehensive US coastal and Great Lakes coverage with live tide data and nautical charts. Navigate safely and efficiently with offline chart storage and distance calculation features.

Navionics® Boating

Nautical and fishing charts

Free

Access detailed nautical charts and advanced boating features offline on your mobile device. Plan trips with dock-to-dock guidance, check weather and tides, and connect with a community of boaters. Ideal for cruising, fishing, sailing, and diving.