---
title: "iSailGPS : NOAA USA RNC Charts - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "Unleash the navigation potential of your iPhone or iPad with SailGPS! Turn your device into a high-performance GPS receiver with USA NOAA Raster Nautical Charts, even without a cell signal!  Rated “Be"
---

# iSailGPS : NOAA USA RNC Charts — United States
> Marine Nautical Chart Plotter

![ISailGPS App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/dc/12/28/dc12289b-c3ee-d972-9acc-d93c7f62c6b3/AppIcon-0-0-1x_U007emarketing-0-8-0-0-85-220.png/434x0w.png)

**Developer:** [James Associates](https://apptail.io/developer/james-associates-HPab) (United States)
**Category:** Navigation
**Rating:** 3.9/5 (72 ratings)
**Price:** $7.99
**Bundle ID:** com.macgpspro.iSailGPS
**Store:** Apple App Store
**Country:** United States
**Version:** 9.6.9 (released 2026-04-24)
**Original Release:** 2011-04-29
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id433950540)
**AppTail Page:** [https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/united-states](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/united-states)

## ISailGPS Description
Unleash the navigation potential of your iPhone or iPad with SailGPS! Turn your device into a high-performance GPS receiver with USA NOAA Raster Nautical Charts, even without a cell signal!

Rated “Best Choice — Excellent” by Practical-Sailor.com

Caught in a storm on the water and your chart plotter fails? Don't worry! Download this app now and regain full navigation capabilities to safely return to port. Better yet, buy iSailGPS today ensuring you're prepared for any situation, even in areas with no cell service.

One Low Price! Everything included. No sign-ups, ads, subscriptions or in-app purchases. Completely respects your privacy.

Unrivaled Features to Enhance Your Journey:

TRACKS, WAYPOINTS & ROUTES

Record tracks as you sail, even in the background. View them on the chart and in a Speed & Course Over Ground graph.

Mark waypoints precisely using charts or satellite maps, place names or addresses, geotagged photos, or by projecting from a known point.

Set a quick GoTo waypoint or a full route and see the course (COG), heading (HDG), bearing (BRG), direction, distance, cross track error (XTE), Velocity Made Good (VMG) and Estimated Time of Arrival (ETA) at your destination and intermediate points. Perfect for racing enthusiasts.

In a Man Overboard (MOB) emergency a single button press marks your current position & starts navigating to it.

Create customized routes using waypoints, recorded tracks, or imported GPX, KML or TCX files. Advanced route editing.

Send GPX and KML waypoint, route, track and map list files via AirDrop, eMail, Messages, or iCloud Drive.

View the sun & moon position and rise & set times for any date & place on earth.

Send data to other apps such as Google Earth.

USA NOAA RASTER NAUTICAL CHARTS 

Access to all NOAA RNC Charts for USA waters with no extra charge. Download using WiFi or cell service.

Our chart files are optimized to download faster & use less storage memory. Store up to 2200 charts to use anytime at sea without cell service.

Stitches charts & automatically switches between downloaded charts as you sail. Choose detailed or overview charts.

Print & Share chart images overlaid with waypoints, routes & tracks.

Measure distance & direction between any 2 points.

NOAA charts don't include most inland rivers & small lakes. Use our iHikeGPS app for these.

HOW TOS

Tap Help in the app.
Online Manual: isailgps.com
Email developer: lwjames@isailgps.com

RASTER CHARTS VS. VECTOR CHARTS

The National Oceanic & Atmospheric Administration has provided both RNC (raster) & ENC (vector) charts.

The great advantage of the high resolution RNC charts used by iSailGPS is the high level of detail produced by professional cartographers that is unobtainable on any vector-based chart.

These RNC Charts differ from vector charts in that each chart covers a specific area, just as paper nautical charts do. Switches automatically to a new chart when your boat leaves the area covered by the previous chart. For most locations, there are multiple charts at different scales with different levels of detail & areas of coverage.

Paper charts can have multiple panels, each showing a different area or scale. Each digital panel is individually displayed by iSailGPS with a north-up orientation.

iSail GPS is priced to make it readily available to all boating enthusiasts.

Winner of the Practical Sailor Editors’ Choice Award.

DEVICE REQUIREMENTS

Use iSailGPS on any iOS device even if you don't have a cellular data plan for it. iPhones & WiFi+cellular iPads support full navigation. For WiFi-only iPads & iPod touch, an iOS-compatible external GPS receiver is required to show your location on the water & record tracks. However, you can view charts using the iOS device alone.

Discover a safer and more enjoyable sailing experience with iSailGPS!

## ISailGPS Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/c1/85/93/c185936f-c807-6a54-84e0-cc3115b8352f/6157ae6f-d872-4b15-83c0-d91ff53435d6_ToGoldenGateIphone3_5.png/640x920.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/91/0b/bd/910bbd30-bfd7-ceec-b5b6-da89f08e9a23/04bcf0ac-e7f5-4886-85cf-6915fcabcc8e_TrackTimeDate3_5-7wp.png/640x920.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/eb/39/36/eb393631-0c05-cacb-a1d9-1cbdc1dcd944/pr_source.png/640x920.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/9f/25/d6/9f25d62d-8582-5447-ce62-d8d375d7b8a9/25db2f67-6efa-4039-af6e-e557db7411d9_CruzBayIphone3_5-8.png/640x920.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/e4/69/d6/e469d66e-a906-0e95-4888-950dffccc127/c00f5aa1-cdb8-4198-8b44-cfe12c78bf6a_ChartList3_5.png/640x920.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/f0/3a/c2/f03ac2dd-f3cf-1c5a-4397-66ca362302a4/41aa59cd-54bb-47dc-96c7-ac3ceea999fa_SanDiegoBay3_5.png/640x920.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/64/33/53/6433534c-22d5-42a0-4a04-735744ea264d/294dbea2-25f6-4524-91d9-f6f29f06f660_ApostleIslandsSocial3_5-8.png/640x920.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/8a/a6/02/8aa60260-28e1-83dd-fbfd-af8cde1b985a/423b520b-fcce-454b-a84b-71c738bf2aa6_SunAndMoon3_5.png/640x920.png)

## ISailGPS Rating Breakdown in United States
- 5 stars: 47 (65%)
- 4 stars: 5 (7%)
- 3 stars: 2 (3%)
- 2 stars: 5 (7%)
- 1 stars: 13 (18%)

## ISailGPS Reviews in United States

### ***** "Simple accurate actual charts"
I miss charts. This is by far my favorite app for sailing. No distractions, just clear accurate markings on a proper chart!
-- Dubitoff, 2024-07-27

### ***-- "Poor chart management"
The main problem for me is the inability to stitch together a see less chart and being able to get the best detail for the area automatically. I’ve been playing with app for awhile now and when I get to the chart boundary I can often get the next chart to show by double tapping the white area outside of it. And sometimes, I think, it seems to have successfully stitched together into a single, larger chart. But, it may not have the sufficient detail I need for a particular port. At that point I’m forced to go to my downloaded charts and find it. Not so simple as I now have a long list of charts. This can be impractical to do on the water unless you have a dedicated navigator. When approaching a busy area I don’t want to take my eyes off the water and be scrolling through a list of charts trying to find the appropriate detail. Maybe I’m missing something but for me other apps with paid subscriptions work a lot better. There’s just no chart management needed, and you can find them for as little as $5/year (at least for my area - eastern US coast).
-- StewartGriffin, 2024-03-26

### ***** "Finestkind!"
Tracking and data viewing and export are excellent. NOAA chart integration is perfect. Highly recommended.
-- Trebor2563, 2024-01-02

### ***** "The Perfect Combo"
iSail is the perfect combination of gps tracking tech and time honored and trusted NOAA charts. Easy interface allows for quick waypoint and route creation, and accurate speed over ground, course over ground, and location tracking over time. Adding new charts and their upclose inserts from all over the US is quick and intuitive. Highly recommended for day sails and multi-waypoint long distance trips.
-- Jon Gus, 2023-11-22

### ***** "Works great"
I have been using it for 8 years. Tracked to Bermuda BVI and Florida to Baltimore. Charts are free mine has no subscription
-- DaviSco23, 2023-11-04

### ***** "Always Impressed"
After investing a little time to understand this app, I found it to be extremely valuable and accurate. I was won over, when we used it to navigate across the Chesapeake Bay at night. The waypoint marker we were heading to was supposed to be a flashing light but the light was out and we were a little uncertain that we were on course. When we suspected we should be at our destination marker we turned on our spot light and found ourselves perched with the marker on our port quarter.  Can’t believe this app is only $7.99.
-- SpudV, 2023-05-22

### ***** "Good simple program"
Have tried several programs - this program seems to be the most battery friendly and is a good backup program.  Very stable.  Main limitation seems to be the app only works w NOAA charts so no international use.
-- martinus1962ssc, 2022-11-15

### ***** "Great customer service"
I couldn’t find the specific chart for the area , Friday Harbor, San Juan islands, Wa. I left a message and he called me back on Sunday afternoon and helped download the chart I needed. Thanks
-- glb4267, 2022-06-05

### ***** "Solid app, and reliable as a backup plotter"
I like how this app uses the straight NOAA raster charts. Also don’t have the login and in app purchase issues that I’ve had with competitors.
-- BHinDLH, 2022-04-25

### ***** "Can’t beat it"
I have used this app on my phone to navigate my sailboat at night from San Diego to Catalina and arrived at Avalon dead on the mark and within five minutes of the predicted ETA. While it’s less convenient than a dedicated chart plotter, it gets the job for a fraction of the price.
-- gyrogeerloose, 2021-10-29

[View all ISailGPS reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)


## ISailGPS Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Dominican Republic | Navigation | #49 |
| Top Paid | Nigeria | Navigation | #72 |
| Top Paid | United States | Navigation | #77 |
| Top Paid | Kuwait | Navigation | #79 |
| Top Paid | Philippines | Navigation | #108 |
| Top Paid | Denmark | Navigation | #114 |
| Top Paid | Lebanon | Navigation | #116 |
| Top Paid | Israel | Navigation | #123 |
| Top Paid | Canada | Navigation | #139 |
| Top Paid | Finland | Navigation | #142 |
| Top Paid | Indonesia | Navigation | #142 |
| Top Paid | United Arab Emirates | Navigation | #144 |
| Top Paid | Greece | Navigation | #146 |
| Top Paid | Sweden | Navigation | #149 |
| Top Paid | Egypt | Navigation | #151 |
| Top Paid | Singapore | Navigation | #153 |
| Top Paid | South Africa | Navigation | #158 |
| Top Paid | New Zealand | Navigation | #163 |
| Top Paid | Mexico | Navigation | #167 |
| Top Paid | Spain | Navigation | #168 |
| Top Paid | Colombia | Navigation | #172 |
| Top Paid | Chile | Navigation | #174 |
| Top Paid | Vietnam | Navigation | #175 |
| Top Paid | Brazil | Navigation | #177 |
| Top Paid | Norway | Navigation | #177 |
| Top Paid | India | Navigation | #192 |
| Top Paid | South Korea | Navigation | #196 |
| Top Paid | Australia | Navigation | #202 |
| Top Paid | Türkiye | Navigation | #206 |
| Top Paid | Malaysia | Navigation | #216 |
| Top Paid | Ukraine | Navigation | #217 |
| Top Paid | Ireland | Navigation | #219 |
| Top Paid | Italy | Navigation | #219 |
| Top Paid | Romania | Navigation | #219 |
| Top Paid | Japan | Navigation | #220 |
| Top Paid | Kazakhstan | Navigation | #223 |
| Top Paid | Peru | Navigation | #238 |

## ISailGPS Discovered Keywords
- sailing adventure
- isailgps
- rnc

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## ISailGPS Available In
- [United States](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/united-states)
- [Canada](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/canada)
- [India](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/india)
- [Italy](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/italy)
- [Indonesia](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/indonesia)
- [Azerbaijan](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/azerbaijan)
- [Belgium](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/belgium)
- [Bulgaria](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/bulgaria)
- [Bahrain](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/bahrain)
- [Bermuda](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/bermuda)
- [Brunei](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/brunei)
- [Brazil](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/brazil)
- [Belize](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/belize)
- [Switzerland](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/switzerland)
- [Chile](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/chile)
- [China](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/china)
- [Colombia](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/colombia)
- [Cyprus](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/cyprus)
- [Czechia](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/czechia)
- [Germany](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/germany)
- [Denmark](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/denmark)
- [Dominican Republic](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/dominican-republic)
- [Algeria](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/algeria)
- [Ecuador](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/ecuador)
- [Egypt](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/egypt)
- [Spain](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/spain)
- [Finland](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/finland)
- [France](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/france)
- [United Kingdom](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/united-kingdom)
- [Greece](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/greece)
- [Hong Kong SAR China](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/hong-kong)
- [Croatia](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/croatia)
- [Hungary](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/hungary)
- [Ireland](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/ireland)
- [Israel](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/israel)
- [Jordan](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/jordan)
- [Japan](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/japan)
- [South Korea](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/south-korea)
- [Kuwait](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/kuwait)
- [Cayman Islands](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/cayman-islands)
- [Kazakhstan](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/kazakhstan)
- [Lebanon](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/lebanon)
- [Lithuania](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/lithuania)
- [Luxembourg](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/luxembourg)
- [Madagascar](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/madagascar)
- [North Macedonia](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/north-macedonia)
- [Malta](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/malta)
- [Mauritius](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/mauritius)
- [Mexico](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/mexico)
- [Malaysia](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/malaysia)
- [Nigeria](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/nigeria)
- [Netherlands](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/netherlands)
- [Norway](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/norway)
- [Nepal](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/nepal)
- [New Zealand](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/new-zealand)
- [Peru](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/peru)
- [Philippines](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/philippines)
- [Pakistan](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/pakistan)
- [Poland](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/poland)
- [Portugal](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/portugal)
- [Paraguay](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/paraguay)
- [Qatar](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/qatar)
- [Romania](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/romania)
- [Saudi Arabia](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/saudi-arabia)
- [Sweden](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/sweden)
- [Singapore](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/singapore)
- [Slovenia](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/slovenia)
- [Slovakia](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/slovakia)
- [Senegal](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/senegal)
- [Thailand](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/thailand)
- [Tunisia](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/tunisia)
- [Türkiye](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/turkey)
- [Taiwan](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/taiwan)
- [Ukraine](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/ukraine)
- [Uzbekistan](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/uzbekistan)
- [Vietnam](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/vietnam)
- [United Arab Emirates](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/united-arab-emirates)
- [South Africa](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/south-africa)
- [Armenia](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/armenia)
- [Argentina](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/argentina)
- [Austria](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/austria)
- [Australia](https://apptail.io/app/isailgps-noaa-usa-rnc-charts-uzDc/australia)

---

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