qtVlm

qtVlm

Navigation and weather routing

7 ratings
24 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • January 15, 2016
  • June 22, 2026

Features

qtVlm screenshot #1 for iPhone
qtVlm screenshot #2 for iPhone
qtVlm screenshot #3 for iPhone
qtVlm screenshot #4 for iPhone
qtVlm screenshot #5 for iPhone
qtVlm screenshot #6 for iPhone
qtVlm screenshot #7 for iPhone
qtVlm screenshot #8 for iPhone
qtVlm screenshot #9 for iPhone
qtVlm screenshot #10 for iPhone
iphone
ipad
🖼️Get Icon
Icons↘︎

About

This navigation software is designed for sailing boats, offering a free version with basic GRIB viewing and an optional full version with advanced weather routing, chart modules, and communication features. It supports various chart formats and NMEA data sources, with a simulation mode for learning.

GRIB viewer with advanced functions
Weather routing and route modules
Support for Raster, Vector, and MBTiles charts
Harmonic file support for tides and currents
AIS and Iridium GO! communication
Anchor Alarm module
Simulation Mode for learning
Show original description

What's New in qtVlm

5.12.2601

June 22, 2026

Fix an issue with Alarms dialog

1

In-App Purchases

$49.99

Full version

Activates route and routing modules, instruments, and AIS. Allows to display charts in mbtiles and raster (kap, geotif, etc) formats.

User reviews

Super

Logiciel que j’utilise depuis plusieurs années, d’abord sur Pc puis sur IOS.
Il faut un peu de temps pour exploiter toutes ces possibilités mais ça vaut vraiment la peine de s’investir!
Je l’utilise tous les ans pour mes traversée vers les Baléares, quel régal de pouvoir programmer son départ et de pouvoir anticiper l’évolution de la situation météo.
Bravo au concepteur qui fait évoluer son application très régulièrement.
Show more

Parfait !

Tres bonne application de routage

Response from developer

Merci de nous contacter à support@meltemus.com pour régler ce problème

Parfait !

Cela fait maintenant 4 ans que j’utilise ce logiciel. Je navigue en manche (côtes françaises et anglaises), avec une carte « Visit My Harbour ». Mon système est connecté avec un AIS et un système NKE : c’est vraiment impressionnant. La polaire de mon bateau est installée, et le % à la polaire s’affiche sur le NKE : sympa pour peaufiner ses réglages !
Je fais toutes mes nav avec QTVLM, avec ou sans routage.
En fonctionnalité, je rêve d’avoir un module d’acquisition de la polaire réelle ou je précise les voiles, l’état de la mer, etc.
Et bravo pour la qualité et la réactivité du support, toujours pertinent !
Show more

Déplacement bateau

Je n’arrive pas à déplacer le bateau à l’endroit souhaité . Quelle est la manip? Merci

Response from developer

Si l'acquisition NMEA est lancée on ne peut pas bouger le bateau manuellement, sinon ca se fait avec le doigt ou bien via le pinpoint et "déplacer le bateau ici"

Confusing

I use marine navigation & weather apps at lot both for leisure and work. This app does a lot potentially, but is so difficult to use with a very unfriendly interface. Unless you are committed to an extremely long learning curve, you may be better looking elsewhere .

Developer apps

FAQ

What is qtVlm?

qtVlm is a navigation software specifically designed for sailing boats. It offers a free version with essential GRIB viewing capabilities and a full version with advanced features like weather routing and various chart modules.

Does qtVlm have ads?

No, qtVlm does not contain advertisements. The application is free to download and use, with optional full features available through an in-app purchase.

What devices does qtVlm support?

qtVlm is available for iPhone, iPad, and iPod devices. The full version, once activated, can be used across all your iOS devices.

How often is qtVlm updated?

The latest version of qtVlm is 5.12.2200, last updated on March 25, 2026. This indicates a recent update, suggesting ongoing development and support.

What are the benefits of the full version of qtVlm?

The full version of qtVlm unlocks advanced features such as weather routing, a complete set of navigation instruments, support for various chart types (S57, S63, CM93, MBTiles), harmonic files for tides and currents, Iridium GO! communication, and AIS.

Can I try qtVlm before buying the full version?

Yes, qtVlm offers a free version with basic GRIB viewing and chart capabilities. Additionally, it includes a Simulation Mode that allows you to practice navigation using their server, which is an excellent way to learn the software.

What is the user rating for qtVlm?

qtVlm has a user rating of 3.3 stars based on 7 ratings. This rating suggests that while many users find value in the app, there may be areas for improvement based on user feedback.

What chart formats does qtVlm support?

qtVlm supports basic charts in its free version. The full version expands this to include Raster charts, Vector charts (S57, S63, and CM93), and MBTiles.