---
title: "iSailGPS : NOAA USA RNC Charts — App Overview"
url: https://marlvel.ai/apps/com-macgpspro-isailgps
category: Navigation
developer: James Associates Inc.
platforms: ios
rating: 3.9 (71 ratings)
pricing: paid
report_level: overview
generated: 2026-04-24
last_verified: "2026-04-24T00:41:21.901Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** iSailGPS offers a subscription-free, offline-capable navigation solution, though some users report challenges with manual chart management during active transit.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Navigation |
| Rating | 3.9 ★ (71) |
| Pricing | paid |
| Platforms | iOS |
| Latest Version (iOS) | 9.6.6 |
| Developer | James Associates Inc. |

<!-- SECTION: Summary -->
## What is iSailGPS : NOAA USA RNC Charts?

iSailGPS is a navigation tool that provides offline access to USA NOAA Raster Nautical Charts for iPhone and iPad users. It functions as a standalone GPS receiver, allowing sailors to record tracks, manage waypoints, and create routes without requiring a cellular signal. The app distinguishes itself by offering a one-time purchase model with no recurring subscriptions or in-app advertisements.

<!-- SECTION: Key Features -->
## Key Features

- **NOAA Raster Nautical Charts**: Provides offline access to official USA nautical charts for navigation in areas without cellular coverage.
- **Track and Route Management**: Records sailing tracks in the background and allows for the creation of waypoints and routes.
- **Speed & Course Over Ground Graph**: Visualizes real-time navigation data to assist in monitoring vessel performance and trajectory.
- **Waypoint Projection**: Enables precise waypoint marking via geotagged photos, addresses, or projection from known coordinates.

<!-- SECTION: Target Audience -->
## Who is it for?

Recreational sailors and boaters requiring reliable, offline marine navigation tools.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/isailgps-noaa-usa-rnc-charts/id433950540?uo=2)
- [Full Intelligence Report](https://marlvel.ai/apps/com-macgpspro-isailgps)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/com-macgpspro-isailgps).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*