qtVlm

Name: qtVlm
Rating: 3.3 (7 reviews)
Author: Meltemus SAS

By: Meltemus SAS

Navigation and weather routing

Features & Capabilities

qtVlm is a navigation software for Sailing Boats. The application has a free version with basic features and a full version available through in-app purchase.

The free version of qtVlm is a full grib viewer displaying all types of gribs and providing many advanced grib functions. It supports basics charts and some simple instruments. It includes also an Anchor Alarm module, a viewer for shapefiles, for instance those coming from SHOM, and can be configured to receive boat position either from internal GPS or from an external NMEA source connected through tcp, udp or gpsd.

The full version adds many functions and features:

Weather routing and route modules,
A complete set of navigation Instruments,
Charts modules for Raster charts, Vector charts (S57, S63 and CM93) and mbtiles,
Support for Harmonic files (tides and currents),
Iridium GO! communication
AIS,
Start line mode,
Access to Great Circle gribs,

qtVlm can also be used in Simulation Mode, which allows you to simulate a navigation through our server. This is the best way to learn using qtVlm.

Once activated the full version will be available on all your iOS devices.

User Growth & Download Statistics

App

By:

Meltemus SAS

Rating:

3.30

(7)

Version:

5.12.2500 Last updated: 2026-05-20

Version code:

885896550

Creation date:

2016-01-15

Compatible devices:

Size:

96.19MB

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-06

Compare stats and ranking:

Ranking

# 517,853 ▼ 3,797

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Meltemus SAS

Apple Apps Store

https://apps.apple.com/us/app/qtvlm/id999110023

User Reviews

I have used both the Mac OS and IOS app versions of this excellent, versatile routing software for racing offshore in the NE USA over the last 6 years. It integrates seamlessly with the NKE equipment on the boat and my Iridium Go for satellite based downloads of grib files. It is intuitive to use and has an astonishing array of features from boat polars to being able to overlay charts with wind and tidal current data as well as having full AIS compatibility. Not only does it work out routings for you but is also a very effective chartplotter for a fraction of the price of dedicated marine equipment. During the off season I use it in virtual mode for on line sailing racing to try and sharpen my navigation skills and strategic decision making. On top of all this the developer is continually refining and adding new features and has always been very quick to respond to any questions I have had. Highly recommend it.