---
title: "Navigation Rules Pro — App Overview"
url: https://marlvel.ai/intel-report/reference/com-doubledogstudios-navigationrulespro
category: Reference
developer: Calculated Industries
platforms: ios
rating: 4.8 (437 ratings)
pricing: paid
report_level: overview
generated: 2026-04-18
last_verified: "2026-04-18T21:59:04.802Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** The app serves as a robust, all-in-one digital manual for maritime compliance and navigation, though some users note the interface navigation can be cumbersome.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Reference |
| Rating | 4.8 ★ (437) |
| Pricing | paid |
| Platforms | iOS |
| Latest Version (iOS) | 2.1.9 |
| Developer | Calculated Industries |

<!-- SECTION: Summary -->
## What is Navigation Rules Pro?

Navigation Rules Pro is a comprehensive maritime reference tool for boaters, providing the complete International Regulations for Preventing Collisions at Sea (COLREGS) and Inland Navigation Rules. The app distinguishes itself by bundling regulatory text with practical utility tools, including boating calculators, unit conversions, and visual aids for light signals and bridge lighting.

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

- **Regulatory Reference**: Provides a complete, updated copy of COLREGS and Inland Navigation Rules for all U.S. inland waters.
- **Boating Calculators**: Includes specialized tools for calculating course to steer, distances to shore, and various unit conversions.
- **Visual Quick References**: Offers illustrated guides for sound and light signals, bridge lighting, and steering and sailing rules.
- **Communication & Safety Data**: Contains essential information on DSC, Rescue 21, distress signals, and international code signals.

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

Recreational boaters and maritime professionals requiring quick access to navigation regulations and operational reference data.

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

- [App Store](https://apps.apple.com/us/app/navigation-rules-pro/id494309072?uo=2)
- [Full Intelligence Report](https://marlvel.ai/intel-report/reference/com-doubledogstudios-navigationrulespro)

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