Best Depth Finder Ocean Apps & Games

248+ iOS apps & games curated and reviewed

4.2 avg rating

18 free apps & games

Updated October 2026

Finding the right depth finder ocean apps and games can be overwhelming with so many options. We've analyzed 248+ apps and games to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top Depth Finder Ocean Apps & Games (October 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	WaveDepth: Water Depth	Free	—	No	No	Aug 2026
2	Depthly - Sea Depth	Free	—	No	Yes	Oct 2026
3	How Deep?	Free	1.0★ (1)	No	No	Oct 2026
4	Hawaii Ocean Map	$9.99	5.0★ (5)	No	No	Oct 2026
5	Deeper \| Ocean Explorer	Free	5.0★ (1)	No	Yes	Oct 2026
6	Depth: Beneath the Waves!	Free	—	No	No	Sep 2026
7	Great Depths	Free	4.2★ (12)	No	Yes	Oct 2026
8	MaxOpDepth	Free	—	No	No	May 2026

Top Picks for Depth Finder Ocean

#1

WaveDepth: Water Depth by Jin Hwa Lee

Find depth of sea from waves

Editor's Choice

0.0(0 ratings)

Free

WaveDepth: Water Depth screenshot 1

WaveDepth: Water Depth screenshot 2

WaveDepth: Water Depth screenshot 3

WaveDepth: Water Depth screenshot 4

#2

Depthly - Sea Depth by Ivan Blajic

Nautical maps & charts offline

Strong Contender

🗺️ Navigation

0.0(0 ratings)

FreeIn-App Purchases

Depthly - Sea Depth screenshot 2

Depthly - Sea Depth screenshot 3

Depthly - Sea Depth screenshot 4

Depthly - Sea Depth screenshot 5

#3

How Deep? by Evergreen Labs

Tap to show water depth at sea

Worth Considering

1.0(1 ratings)

Free

How Deep? screenshot 1

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.

More Depth Finder Ocean apps to explore

Hawaii Ocean Map

Hawaii Ocean Map

Hawaii Ocean Map

Hawaiian Islands Depth Maps

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.

High-resolution bathymetry dataOffline map accessInstant depth queries

🗺️ Navigation

Deeper | Ocean Explorer

Deeper | Ocean Explorer

Deeper | Ocean Explorer

Explore the Hidden Ocean

Embark on an interactive journey to explore the ocean's hidden depths, from the sunlit surface to the darkest trenches. Discover unique marine life, understand extreme environments, and learn about fascinating deep-sea phenomena. Test your knowledge with engaging quizzes.

Explore ocean depth zonesDiscover marine life speciesUnderstand deep-sea phenomena

Depth: Beneath the Waves!

Depth: Beneath the Waves!

Depth: Beneath the Waves!

by Pablo Galindo

🎬 Entertainment

by Walk About Apps

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.

Digital depth readoutsLive tide dataNOAA RNC nautical charts

🗺️ Navigation

free with in-app purchases

MarcoPolo Ocean

MarcoPolo Ocean

MarcoPolo Ocean

Build your own submarine!

Explore and build underwater worlds with this "digital sandbox" for kids. Discover marine life, construct submarines, and learn about ocean ecosystems through interactive play. Encourages self-directed learning in science and technology.

Build coral reefs and aquariumsExplore the deep seaSteer submarines and boats

HawkEye DepthTrax PLUS

HawkEye DepthTrax PLUS

HawkEye DepthTrax PLUS

by NorCross Marine Products, Inc

This app turns your mobile device into a fish finder display for compatible HawkEye sonar products. It shows real-time sonar views, fish targets, bottom structure, depth, and water temperature, along with speed and heading data.

Live fish finder sonar viewIdentify fish targets and structureMonitor depth and water temperature

The MERMAID App

Access real-time data from autonomous oceanographic floats that record seismic activity. View instrument locations, trajectories, and health parameters. This app provides a low-cost method for oceanic data collection.

View MERMAID instrument locationsAccess recent trajectoriesObtain ocean depth information

Fishpop:deep ocean

Fishpop:deep ocean

Fishpop:deep ocean

by FUJIU LIMITED

A relaxing puzzle adventure where you match colorful sea creatures to clear the board. Explore hundreds of levels, build your dream ocean home with earned rewards, and enjoy a calm, pressure-free gaming experience.

Match colorful sea creaturesHundreds of puzzle levelsBuild and decorate ocean home

Luckysmart Sonar

Luckysmart Sonar

Luckysmart Sonar

Seabook: Fish Identifier & Log

Seabook: Fish Identifier & Log

Seabook: Fish Identifier & Log

Dive: Scuba DivingㆍSnorkeling

Identify marine life with AI-powered photo recognition and explore detailed species information. Log your dives with comprehensive data, track conditions, equipment, and sightings. Organize your discoveries into personal collections and access information offline.

AI fish identification by photoComprehensive dive logbookPersonalized marine life collections

free with in-app purchases

Fishing Points-Lake Depth Maps

Fishing Points-Lake Depth Maps

Fishing Points-Lake Depth Maps

Fish Finder,Gps Fishing Spots

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.

Fishing AI for spot predictionDetailed lake depth mapsMarine charts with fishing points

free with in-app purchases

Antarctica Guide Vavada

Ocean Radar Expedition

Ocean Radar Expedition

Ocean Radar Expedition

by PIA MERETE HANSEN

Explore the depths

Explore the ocean world through an immersive game that trains AI for scientific research. Discover and identify over 50 groups of ocean animals using real imagery collected by researchers. Contribute to science while playing minigames, completing quests, and earning badges.

Play minigames with real ocean imageryIdentify over 50 groups of ocean animalsSave and share favorite images

Blue Ocean Gear

Blue Ocean Gear

Blue Ocean Gear

Real-Time Buoy Monitoring

Monitor your ocean assets in real-time with an interactive map and sensor data. Track fishing gear, manage buoy operations, and receive smart alerts for faults or movement. Access data offline and customize settings for a seamless experience.

Real-time buoy tracking on interactive mapSensor data monitoring (temperature, depth, wave height)Movement history with path statistics

MMO Range Finder

MMO Range Finder

MMO Range Finder

Precision for your Mitigation

This app helps Marine Mammal Observers calculate distances between animals and acoustic sources during surveys. It uses trigonometric functions and allows users to input target and source bearings and distances for precise mitigation decisions.

Calculate distance using trigonometric cosine functionFix compass bearing by pointing deviceConvert binocular reticules to distance

FAQ about Depth Finder Ocean

Are there free depth finder ocean apps & games for iPhone?

Yes — 18 of the top depth finder ocean apps & games we rank are free to download, including WaveDepth: Water Depth and Depthly - Sea Depth.

Does WaveDepth: Water Depth have ads or in-app purchases?

WaveDepth: Water Depth has no ads and has no in-app purchases, according to its App Store listing as of October 2026.

How many depth finder ocean apps & games are on the App Store?

We track 248+ depth finder ocean apps & games on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.