# Great Depths

> Digital depth finder with US coastal and Great Lakes nautical charts. (iPhone/iPad app by Walk About Apps.)

- Source: https://appshunter.io/ios/app/great-depths/id647627464 (this page in markdown: same URL + `.md`)
- Developer: [Walk About Apps](https://appshunter.io/developer/480229755)
- Category: Navigation, Travel
- Price: Free with in-app purchases
- Rating: 4.20/5 from 12 App Store ratings · 20 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 19 MB
- Languages: American English
- Released: 2013-05-16
- Data updated: 2026-06-06
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/great-depths/id647627464/reviews.md

## What is Great Depths?

Turn your iOS device into a digital depth finder. Great Depths offers coverage of the entire US coast, the Great Lakes, Lake Champlain and more...  Know exactly where you are on the water and cruise to your port of call directly and safely. Sail with Great Depths for iPhone and iPad.

    Great Depths offers digital depth readouts, live tide data and NOAA RNC nautical charts in 60 bargain-priced packages. Digital depth readouts are automatically adjusted based on current tide/lake level and are updated as you move or viewed anywhere with the touch of a finger. 

-- The handy mileage menu calculates distance between any two points instantly. 
-- Purchases are automatically synced across all your iOS devices and downloaded packages are stored locally on your devices so you don’t have to rely on cell service. 
-- Best of all, Great Depths is FREE and never has adds! You can download the app and preview the available charts packages without spending a dime.

Chart coverage includes the entire coast of the contiguous USA, the Great Lakes, Lake Champlain, the Erie, Oswego and Champlain Canals, Lake Mead, Lake Oswego, Lake Pend Oreille, Lake Okeechobee, Lake Winnebago, Franklin D. Roosevelt Lake, Lake Cayuga, Lake Seneca Lakes, Wake Island and more....

## Key features

- Digital depth readouts
- Live tide data
- NOAA RNC nautical charts
- Offline chart storage
- Distance calculation
- Automatic chart syncing

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lake Michigan | Free | one-time |
| Lake Champlain | $0.99 | one-time |
| Huge East Coast Charts | Free | one-time |
| Mississippi and West Florida Coast | Free | one-time |
| Midwest Florida Coast | Free | one-time |
| Southwest Florida Coast | Free | one-time |
| Southeast Florida Coast | Free | one-time |
| Northern NC, Virginia and Delaware Coast | Free | one-time |
| The Chesapeake Bay | Free | one-time |
| New Jersey Coast and The Delaware River | Free | one-time |
| Connecticut and New York Coast | Free | one-time |
| Maine, New Hampshire and Northern Mass. | Free | one-time |
| All the Charts | Free | one-time |
| Florida Keys and the Dry Tortugas | Free | one-time |
| Lake Superior | Free | one-time |
| Northern SC and Southern NC | Free | one-time |
| The Border Lakes | Free | one-time |
| Lake Champlain | Free | one-time |
| Lake Erie | Free | one-time |


## Recent user reviews (10 of 20)

All indexed reviews: https://appshunter.io/ios/app/great-depths/id647627464/reviews.md

### 4/5 — Good

*2020-08-02*

Works for me . Good app. Helpful for boating . How do I get the dropped pin off the map? Maybe make a faq page for the app, for easier use

### 5/5 — Map automatically switches 😤

*2020-07-26*

The map always automatically loads to a picture map. It is very irritating and I would love to just keep the satellite map on while I browse the ocean depths. Is there any way to just keep the satellite map on without it automatically switching?

### 4/5 — good but lacking

*2016-05-22*

Need to flag protected areas so this can be used for on water navigation 

36° 33.650' N. lat. 121° 57.600' W. long.;
36° 33.650' N. lat. 121° 58.500' W. long.;
36° 33.100' N. lat. 121° 58.500' W. long.;
36° 33.100' N. lat. 121° 57.600' W. long.; and 36° 33.650' N. lat. 121° 57.600' W. long.

Be able to enter coords like this so that it will show the boundaries of that protected fishing area

### 2/5 — Needs Canadian charts

*2015-08-15, version 3.9.0*

Seems like a great app but it needs Canadian charts as well. West Coast would be great.

### 5/5 — Great app!!

*2015-07-04*

We were visiting Lake Champlain for the week and had a paper chart but our chart plotter didn't cover this area. Got this app while exploring the lake and it was a tremendous help when cruising along!

### 2/5 — LookED good

*2015-06-01*

But on an iPad and 6+ the app locks up and will not function.  Trying to expand to a point where you can actually READ the charts of Lake Champlain and the Hudson canal produce more lockup.   App is nonfunctional for me and two emails to the support contact produced NO response-which was the largest disappointment.  I doubt a refund is to be offered, but one is certainly in order!

### 5/5 — Simply the best

*2015-05-09*

Great app with many great features, simple intuitive to use. Keep up the excellent work.

### 4/5 — Owner/Opp

*2015-04-13*

Of what I've used... it works great.. looking for nav. aids as direction and distance

### 4/5 — Cool but the crash...

*2015-02-01*

Very, very cool. Crashes are common and slow to load. Other than its actually quite awesome.

### 5/5 — Great app

*2015-01-06*

Solid. The charts and digital depth readings are great. Perfect for cruising around Lake Champlain.

## Frequently asked questions about Great Depths

### Does Great Depths have ads?

No, Great Depths is completely ad-free, allowing for an uninterrupted navigation experience.

### What devices support Great Depths?

Great Depths is available for iPhone, iPad, and iPod devices, offering broad compatibility for iOS users.

### How often is Great Depths updated?

The app was last updated on September 28, 2017, with version 4.0. While updates may not be frequent, the core functionality remains reliable for navigation.

### Can I use Great Depths offline?

Yes, downloaded chart packages are stored locally on your device, meaning you can use Great Depths without relying on cell service.

### What is the age rating for Great Depths?

Great Depths has an age rating of 4+, making it suitable for a wide range of users.

### How does Great Depths handle tide data?

The app provides live tide data that is automatically adjusted based on current tide or lake levels, offering accurate depth readings.

### What kind of chart packages does Great Depths offer?

Great Depths offers chart coverage for the entire US coast, the Great Lakes, and various other lakes and canals, available in bargain-priced packages.

### How does Great Depths compare to other navigation apps?

Great Depths focuses on providing essential depth finding and nautical charting features with offline capabilities and an ad-free experience, differentiating itself from apps with broader feature sets or subscription models.

## Version history (last 5 releases)

### 4.0 — 2017-09-28

This app has been updated by Apple to display the Apple Watch app icon.

- Updates for iOS 11
- Bug fixes

### 3.9.0 — 2015-06-10

- Greatly increase rendering speeds.
- Fixed a bug that could cause the app to lock-up when loading many charts at once.

### 3.8.1 — 2015-01-13

- Bug fixes

### 3.8 — 2014-12-05

-Fixed a bug that would cause chart downloads to fail unnecessarily.
-The map now continues to follows the user after the user location button is touched.
-Faster depth readouts.

### 3.7 — 2014-10-08

-A clean new look for iOS 8.

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## More apps by Walk About Apps

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- [Hip Charts](https://appshunter.io/ios/app/hip-charts/id6443591337)

All apps by Walk About Apps: https://appshunter.io/developer/480229755

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-06.*