qtVlm5.12.2701 - App Store

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.

Version History Add NMEA 2000 support
S57 motor route: automatic generation of a motor route using S57s objects, including Inland S57s.
Meltemus gribs Module: New profiles function
Licenses Module: Complete redesign of user interface. 5.12.2701 Jul 24 Add NMEA 2000 support
S57 motor route: automatic generation of a motor route using S57s objects, including Inland S57s.
Meltemus gribs Module: New profiles function
Licenses Module: Complete redesign of user interface. 5.12.2700 Jul 21 Fix an issue with Alarms dialog 5.12.2601 Jun 22 AIS: Add passage information on CPA (ahead/abeam/astern).
Add AVURNAV for La Réunion
Support grib sources with variable duration, new model freshness indicator. On server side new gribs: Italia/Moloch, KNMI (NL Caribbean), new Copernicus zone, UKMO global and UKV.
Add possibility to save/restore instruments configuration, and to share instruments configuration via Data Exchanger.
Optional translation of all S57 labels. Press long on chart inset icon to select chart group. 5.12.2600 Jun 16 New Chart insert module, allowing to open another window for showing other charts or places. Add possibility to drop a POI on an object found by "Search in ENC charts"
Use grib model name in meteogram.
Add support for Portuguese (Brazilian) language. Refactor palette and style implementation (and day/dusk/night modes). Add an optional High-Contrast (CVD) mode
A fix in route's tooltip concerning waves, and a fix in route's optimization
Fix reversed engine in simulation mode 5.12.2500 May 20 New internal compass sensor management (including vertical mount). New instruments CS and CD, replacing CSCD. Add an option to compensate AWA/AWS using heel. TWA/TWD are now calculated against CTW/STW instead of HDG/STW. In pressure histogram, add an option to compare boat pressure measures to grib pressure data.
Improvements in Meltemus Gribs downloads. Better grib color bar placement and size management.
Improvements when routings on ensemble gribs and on pathways. 5.12.2400 May 4 Improved routing calculations, especially when trying to circumvent an obstacle and routing on pathways.
Add LWY instrument (Leeway).
Add a cache for AIS fleet names
Full refactoring of 3D module 5.12.2301 Apr 16 Improved routing calculations, especially when trying to circumvent an obstacle and routing on pathways.
Add LWY instrument (Leeway).
Add a cache for AIS fleet names
Full refactoring of 3D module 5.12.2300 Apr 15 Fix an issue when over zooming on ENC charts 5.12.2201 Mar 30 New simulator module with improved engine behavior.
Add an option to automatically archive tracks
Add a parameter for wind's sensor altitude
Several other improvements 5.12.2200 Mar 25 Fix sails changes tooltip on route not showing
Fix some images 5.12.2101 Feb 23 Routes Module: Add possibility to show sails changes on the route.
Instruments Module: Improvement in Pressure instrument: possibility to have up to 10 days history, add a trending information for the last hours (configurable, default is 3 days). Automatic sensor noise reduction. Possibility to zoom on all instruments curves.
POIs Module: Possibility to use POI circles as barriers. 5.12.2100 Feb 21 Fix a problem when saving configuration 5.12.1204 Jan 20 Various small fixes 5.12.1203 Jan 20 Improvements in grib time line 5.12.1202 Jan 15 Fix a issue with "Now' button 5.12.2001 Jan 12 Add possibility to modify gribs current speed and direction
Add histogram for Rudder Angle. Add UTC instrument

Add buttons to show/hide all DCC boats. IRC limit is now 3.0
Fix a bug in CM93s charts
Add Sargassum images. Add possibility to add keywords in URL for day, month, year and Julian date 5.12.2000 Jan 10 Fix an issue when using main dashboard to activate next WP on a route
Reactivation of barriers contextual menu 5.12.1904 12/02/2025 Add sound for MOB alarm and add MOB generation via NMEA message WPL (NKE)
Add possibility to send a NMEA message VWR (TWA/TWS) to NMEA outputs 5.12.1903 11/29/2025 Some fixes in some dialogs geometry 5.12.1901 11/16/2025 Add Perturbed forecast and Unperturbed forecast in Ensemble grib data
Fix NMEA message ZTG. Improve NMEA MDA message management (pressure and air temperature)
Add possibility to send an AIS target track to archived tracks
Add POL (theoretical polar speed) column in VDR. Add possibility to compare gribs wind data against a saved VDR
Add scrollbars in all dialogs. Improvements in mobile configuration dialog 5.12.1900 11/11/2025 Fix pathway export.
Fix route exchange via data exchanger when route has a fixed starting date.
Fix a very rare case of non ENC detection. 5.12.1801 10/23/2025 Add Data Exchanger module, for sharing data (POIs, Routes, Pathways, Grib, Polars, etc.) to other devices on the same network.
Add a parameter for microboard's size
Various small improvements and fixes. 5.12.1800 10/20/2025 Add a button for updating all charts packs in one touch
Add AVURNAVs for Martinique and Guyane
In Simulation Mode if boat is anchored he is now oriented towards the anchor
Fix a minor issue in tracks editing
Improve Alarms History 5.12.1703 09/04/2025 Fix an issue when generating a random MMSI for AIS via Internet.
Fix an issue with single vector chart opacity.
Improve shapefiles management when loaded via Weather images module.
Improve Alarms History. 5.12.1702 08/11/2025