# i-Boating: USA Marine Charts — Nautical + Lake Contour Maps

> Marine and lake navigation charts with GPS route assistance and tide predictions. (iPhone/iPad app by Bist LLC.)

- Source: https://appshunter.io/ios/app/i-boating-usa-marine-charts/id993040478 (this page in markdown: same URL + `.md`)
- Developer: [Bist LLC](https://appshunter.io/developer/452642934)
- Category: Navigation, Travel
- Price: $29.99
- Rating: 4.30/5 from 186 App Store ratings · 23 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 61 MB
- Languages: American English, Dutch, Finnish, French (France), German (Germany), Norwegian Bokmål, Russian, Swedish
- Released: 2015-06-06
- Data updated: 2026-08-27
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/i-boating-usa-marine-charts/id993040478/reviews.md

## What is i?

This App offers access to  NOAA marine vector charts, freshwater lake maps, USACE inland river maps (HD/1ft/3ft bathymetry included where available). First marine GPS app to have route assistance with Voice Prompts for marine navigation. You can create new boating routes or import existing GPX/KML routes. It supports Nautical Charts course up orientation. Includes Tide & Currents prediction.

►FEATURES
√  Beautiful and detailed Hardware/GPU accelerated vector charts (text stays upright on rotation)
√ Long press to query the details of Marine object (Buoy, Lights, Obstruction etc).
√ Customizable depth(Ft/Fathom/Meter) and distance units (km/mi/NM)
√ Customizable Shallow Depth.
√  Record tracks, Autofollow with real-time track overlay & predicted path vector.
√  Voice Prompts for marine navigation (requires GPS )
√  1ft / 3ft depth contour maps for anglers for selected lake maps.
√  Supports GPX/KML for boating route editing/import.
√  Tide & Currents prediction.
√  Seamless chart quilting of marine charts
√  Enter or import Waypoints.

► MAPS
The maps include coverage of all NOAA marine vector charts (ENC),  USACE inland river maps, and freshwater lake maps for more than 7K lakes. The charts include HD/1ft/3ft bathymetry where available. The app also includes NOAA raster charts for some areas where NOAA ENC coverage is not available. It includes unlimited updates for 1 year. 

►ROUTE MANAGEMENT / TRIP PLANNING
√ Create New Route/Edit Existing Routes
√ Move Points
√ Add points to an existing route leg
√ Delete / Rename points
√ Import GPX, KML & KMZ files
√ Plot/Edit Routes 
√ Enter Waypoints
√ Share/Export Routes, Tracks & Markers
√ Reverse Routes

►GPS FEATURES
√ Auto Follow
    * Real Time Track Overlay
    * Predicted Path Vector
    * Course Up (Text stays upright)
    * Speed & Heading
√ Route Assistance With Voice Prompts
    * Prompts when approaching a boating route marker
    * Continous distance and ETA updates
    * Alerts when sailing/boating off route
    * Alerts when boating in wrong direction
√ Record Tracks

►TIDE & CURRENTS
    * For US, Canada, UK, Germany & New Zealand
    * High/Low Tides
    * Tidal Current Prediction
    * Active Current Stations

► SHARING
    * Share tracks/routes/markers on Facebook & Twitter
    * Export tracks/routes/markers  as compressed GPX files.

Sample Nautical Charts (please visit http://gpsnauticalcharts.com/main/folio-catalog-nautical-charts-app for complete list)
SUGARLOAF KEY-KEY WEST
PORT RICHEY TAMPA BAY - CLEARWATER HBR
EAST BAY-WEST BAY FLORIDA
ST JOSEPH, ST ANDREW BAYS
INTRACOASTAL WATERWAY MATECUMBE-GRASSY KEY
CHESAPEAKE BAY CAPE CHARLES-NORFOLK HARBOR
ANCLOTE KEYS-CRYSTAL RIVER
ST JOSEPH SOUND
MIAMI HARBOR
Minnesota lakes - Kabetogama, Minnetonka, Waconia,Leech,Mille Lacs
Lake Keowee,Jocassee,Hartwell,Greenwood,Lake Murray
Mark Twain,Ozarks,Table Rock
Lake St. Clair
Lake Kentucky
KEY WEST-THE MISSISSIPPI RIVER
SAN PEDRO CHANNEL
LAKE MICHIGAN STONY LAKE-POINT BETSIE
APALACHICOLA BAY-CAPE SAN BLAS
EAST CAPE-MORMON KEY
CAPE HENLOPEN-INDIAN RIVER INLET
CHESAPEAKE BAY CAPE HENRY-THIMBLE SHOAL LIGHT
DULUTH-SUPERIOR HARBOR
MONHEGAN ISLAND-CAPE ELIZABETH
LAKE ONTARIO - CLAYTON-FALSE DUCKS ISL
Lake Winnipesaukee
SAN FRANCISCO ENTRANCE
MIAMI-MARATHON, FLORIDA BAY
CAPE MAY-FENWICK ISLAND
MISSISSIPPI RIVER-GALVESTON
CAPE CANAVERAL-KEY WEST
DELAWARE RIVER WILMINGTON-PHILADELPHIA
FLORIDA KEYS SOMBRERO KEY-SAND KEY
SAN PABLO BAY
RAINY LAKE BIG ISLAND MINN-OAKPOINT ISL ONT
INTRACOASTAL WATERWAY - BISCAYNE BAY
EVERGLADES NTL PARK - SHARK RVR-LOSTMANS RVR
MIAMI-MARATHON & FLORIDA BAY
BLACKBURN BAY
LAKE HURON
LAKE TAHOE
STRAITS OF MACKINAC
NORFOLK HARBOR & ELIZABETH RIVER
SAN DIEGO-SANTA ROSA ISLAND
DELAWARE BAY
CHOPTANK RIVER CAMBRIDGE-GREENSBORO
FORT LAUDERDALE PORT EVERGLADES
ST SIMONS SOUND-TOLOMATO RIVER
CHESAPEAKE DELAWARE CANAL

PLEASE NOTE: Continued use of GPS running in the background can dramatically decrease battery life.

## Key features

- NOAA marine vector charts
- Freshwater lake contour maps
- Voice-prompted route assistance
- Tide and currents prediction
- GPX/KML route import
- Track recording and overlay
- Customizable depth units

## Chart rankings

- #182 in Top Paid · Navigation (US App Store)

## Recent user reviews (10 of 23)

All indexed reviews: https://appshunter.io/ios/app/i-boating-usa-marine-charts/id993040478/reviews.md

### 1/5 — Review

*2023-09-15*

Location where I am now not easy

### 5/5 — Excellent small boat charting option!

*2022-04-04*

Moved recently from Florida to Utah.  Have encountered a number of nautical challenges transitioning from coastal chart plotter navigation to inland lakes navigation.  Garmin & Lowrance both want a fortune for their chart plotter options in both inland and coastal products.  This i-boating USA app. Provides fabulous detail on both coastal and inland options for a very, very reasonable price point.  Awesome option alternative to big boy price gouging for marine navigation.

### 5/5 — Great app

*2021-08-24*

The charts are exceptional and the depth indications are great for fishing on Lake Michigan and navigating the St. Joseph river.

### 5/5 — Amazing app!

*2021-08-22*

Just getting acquainted with this app, and I can’t compare it to other similar ones, but wow, it sure does work.  20$ for all of North America and no other costs.  Works great.

### 1/5 — Incorrect water depths.

*2021-05-20*

Bought this for a fishing trip to Shadehill reservoir. All water depths are incorrect and this is after a dry spring. It’s only off by 20 to 28 feet so basically worthless information

### 1/5 — Very difficult to creat a new route

*2021-02-02*

Very difficult to creat a new route

### 1/5 — This App is a Scam

*2021-01-28*

This App is a Scam none of the maps displayed are complete

### 2/5 — Worked great as free but not since I paid

*2020-09-10*

it

### 1/5 — Not worth the money

*2020-02-18*

Not very accurate

### 1/5 — I-Boating

*2019-05-13*

Could use some instructions.

## Frequently asked questions about i

### What kind of maps does this app offer?

The app provides access to NOAA marine vector charts, USACE inland river maps, and freshwater lake maps for over 7,000 lakes. It includes HD/1ft/3ft bathymetry where available, and NOAA raster charts for areas without ENC coverage. Users receive unlimited map updates for one year.

### How does the route assistance work?

This app features route assistance with voice prompts for marine navigation. It provides prompts when approaching route markers, continuous distance and ETA updates, and alerts if you sail or boat off-route or in the wrong direction. GPS is required for this feature.

### Is this app free to use?

The app is free to download and use, offering access to various marine and lake charts. However, it operates on a free with in-app purchases model, suggesting that some features or content might require additional purchases.

### What devices is this app compatible with?

While specific device compatibility isn't detailed, the app is designed for mobile use and requires GPS for certain navigation features. It's likely compatible with most modern smartphones and tablets that support its operating system.

### Can I plan my trips with this app?

Yes, the app includes comprehensive route management and trip planning tools. You can create new routes, edit existing ones, import GPX/KML/KMZ files, add or delete waypoints, and plot your desired courses. Routes, tracks, and markers can also be shared and exported.

## Version history (last 5 releases)

### 107.0.0 — 2021-05-27

- Temporal Wind Prediction Overlay
- Magnetic Bearing
- New lakes covering Michigan, Minnesota, Florida
- Compiled with latest version of Xcode

### 92.0.0 — 2020-06-10

- AutoPilot support: The application can now supports AutoPilot. Under NMEA Instrument settings you can now turn on Auto Pilot. When Goto WayPoint or Route Assistance is turned on, the application will send NMEA instructions to the boat's Auto Pilot over TCP.
- Tide & Currents update
- Compiled with latest version of Xcode
- Incorporated feedback from customers
- Online maps are now default. (Offline still supported incl. strict offline mode)
- Plan routes using online maps and then download just cell covering your cruising area.

### 85.0.0 — 2019-05-03

- Compiled with latest version of Xcode
- Incorporated feedback from customers
- Online maps are now default. (Offline still supported incl. strict offline mode)
- Plan routes using online maps and then download just cell covering your cruising area.
- Around 5K new lakes added in Wisconsin, Michigan and Wyoming

### 60.0.0 — 2016-06-15

- AIS & NMEA Support
- Sonar Phone Support
- Change background to satellite imagery

### 50.0.0 — 2015-06-06

No release notes.

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## More apps by Bist LLC

- [Marine Navigation-USA Lake Map](https://appshunter.io/ios/app/marine-navigation-usa-lake-map/id597961573)
- [Marine Navigation - Canada](https://appshunter.io/ios/app/marine-navigation-canada/id603150458)
- [i-Boating Spain: Marine Charts](https://appshunter.io/ios/app/i-boating-spain-marine-charts/id608696111)
- [Marine Navigation  UK  Ireland](https://appshunter.io/ios/app/marine-navigation-uk-ireland/id683811516)
- [Europe Rivers Canals/Waterways](https://appshunter.io/ios/app/europe-rivers-canalswaterways/id806010515)

All apps by Bist LLC: https://appshunter.io/developer/452642934

## Related topics

[marine charts depth](https://appshunter.io/ios/topics/marine-charts-depth) · [iboat](https://appshunter.io/ios/topics/iboat) · [marines chart](https://appshunter.io/ios/topics/marines-chart) · [lake maps nautical](https://appshunter.io/ios/topics/lake-maps-nautical) · [navigation maps boating](https://appshunter.io/ios/topics/navigation-maps-boating)

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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 2026-08-27.*