# CoNav vs COLREG

The clearest difference is review sentiment: CoNav at 83% against COLREG's 0%. CoNav also leads on update cadence (every 3 weeks vs every 7 months). COLREG's advantage is price ($0.99 vs $6.99) and iOS requirement (12.0 vs 16.0). On ads, in-app purchases, monetization model and device support there is nothing between them.

CoNav costs $6.99 and COLREG $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CoNav ships an update every 3 weeks, COLREG every 7 months. The most recent releases landed on September 25, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | CoNav | COLREG |
| --- | --- | --- |
| Price | $6.99 | **$0.99** |
| Rating | **[4.0 (6 ratings)](https://appshunter.io/ios/app/conav/id1456729642/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | **83.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 7 months |
| Monetization | Paid | Paid |
| Size | 17 MB | 133 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vladyslav Yarmak](https://appshunter.io/developer/1456545549) | [Oleksandr Kuzmychov](https://appshunter.io/developer/1623095994) |

## What reviewers say

### CoNav

[App page](https://appshunter.io/ios/app/conav/id1456729642)

This app provides essential tools for deck officers, including compass error calculation, celestial navigation, and ETA calculations. It offers offline functionality with precise algorithms for various maritime tasks, such as unit conversion and port information.

**Highlights:** Compass Error Calculation, Celestial Navigation, ETA Calculation, Port UN LOCODE Database, Units Converter, True Wind Calculation, Offline Functionality

**Features:** Vision Pro support

**In-app purchases:** none


### COLREG

[App page](https://appshunter.io/ios/app/colreg/id6446209111)

Master maritime navigation with this comprehensive guide to the International Regulations for Preventing Collisions at Sea. Learn about ship lights, day shapes, sound signals, and access the full COLREGs for safe sailing.

**Highlights:** Ship lights guide, Day shapes meanings, Sound signals library, Complete COLREGs access, Flashcards for study

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CoNav free?

CoNav costs $6.99, with no in-app purchases.

### Is COLREG free?

COLREG costs $0.99, with no in-app purchases.

### Do CoNav or COLREG have ads?

Neither CoNav nor COLREG shows ads.

### Which is updated more often, CoNav or COLREG?

CoNav ships an update every 3 weeks, and COLREG every 7 months. Most recently, CoNav was updated on September 25, 2026 and COLREG on September 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*