1. Home
  2. 🗺️ Navigation
  3. CoNav
CoNav

CoNav

Deck Officer's Tools

6 ratings
96 reviews
#84 in paid Navigation
🗺️ Navigation
$6.99

Price history

Details

  • Released
  • Updated
  • March 24, 2019
  • July 22, 2026

Features

Developer

Vladyslav Yarmak
✨Promote your app ✨
CoNav screenshot #1 for iPhone
CoNav screenshot #2 for iPhone
CoNav screenshot #3 for iPhone
CoNav screenshot #4 for iPhone
CoNav screenshot #5 for iPhone
CoNav screenshot #6 for iPhone
CoNav screenshot #7 for iPhone
CoNav screenshot #8 for iPhone
CoNav screenshot #9 for iPhone
CoNav screenshot #10 for iPhone
📈42.92%
Price change↘︎
📉no. 84
Charts↘︎
⭐96
Reviews↘︎
🔄6+ apps
Alternatives↘︎
❓8 answered
FAQ↘︎
📦~ in 2 weeks
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

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.

✓Compass Error Calculation
✓Celestial Navigation
✓ETA Calculation
✓Port UN LOCODE Database
✓Units Converter
✓True Wind Calculation
✓Offline Functionality
Show original description

What's New in CoNav

2.6.3

July 22, 2026

Performance improvements.

Charts

Top Paid

📉 84-6

Navigation

This app dropped -6 positions in Navigation chart.

Last updated on August 18, 2026.

User reviews

Most RecentHighest RatedLowest Rated

Celestial navigation is a complete disaster!

I put 2 stars just for compass error calculation. In celestial navigation there are too many mistakes with GHAs, Semidiameters and increments. If you want app to help you with celestial observations I don’t recommend it. So don’t buy it. I understand if it was free but it’s not. And all these mistakes are unacceptable!!!
Show more
RussistdestroyerRussistdestroyer

Additional Option

Please add option to toggle dark and white mode. Sometimes its hard to use outside especially when taking sun's error. Because the default is always dark. Thanks a lot
Satoshi NakamotorSatoshi Nakamotor

Wonderful app

Perform an update to the geographic coordinate conversion feature, with particular emphasis on conversions from UTM to WGS84.
FelipeIshiiFelipeIshii

..

Why is the gyro error always 0.0? Great app btw
ShnizzlelyShnizzlely

Usefull

Awesome
UnZer0UnZer0
See 91 more reviews

Developer apps

All Units
All Units

Converter

🔧 Utilities

(1)

Free
With Ads
Sea Breeze
Sea Breeze

True Wind Calculation

🔧 Utilities
$0.29 $0.99
CVoyager
CVoyager

Route Planner

🗺️ Navigation

(6)

Free
In-App Purchases
Finka
Finka

by Vladyslav Yarmak

💰 Finance
$0.99 $2.99
Neira
Neira

Data Driven Visual Effect

📷 Photo & Video
Free $0.29
In-App Purchases
See developer apps

FAQ

What is CoNav?

CoNav is a suite of offline tools for deck officers, offering features like compass error calculation, celestial navigation, and ETA calculations. It aims to enhance safety and efficiency in maritime operations.

Does CoNav work offline?

Yes, CoNav runs entirely offline. All calculations are performed within the app using sophisticated algorithms, ensuring functionality even without an internet connection.

What devices support CoNav?

CoNav is currently supported on iPhone devices. The app was last updated on February 24, 2026, with version 2.6.0.

How much does CoNav cost?

CoNav is a paid application, priced at $6.99. There are no in-app purchases or advertisements associated with this app.

What kind of calculations does CoNav offer?

CoNav offers a wide range of calculations including compass error, celestial navigation with three position lines, ETA, unit conversions across 15 dimensions, and true wind calculation.

Is CoNav suitable for beginners?

CoNav is designed for deck officers, implying a certain level of maritime knowledge. However, its comprehensive tools and offline capability make it a valuable asset for professionals.

How often is CoNav updated?

The latest version of CoNav is 2.6.0, last updated on February 24, 2026. While specific update frequency isn't detailed, the app has seen consistent development since its release in 2019.

What is the age rating for CoNav?

CoNav has an age rating of 4+, making it suitable for a broad audience. The app focuses on professional maritime tools.