qtVlm
qtVlm Summary
qtVlm is a with in-app purchases iOS app in Maps And Navigation by Meltemus SAS. Released in Jan 2016 (10 years ago). It has 101 ratings with a 4.12★ (good) average. Based on AppGoblin estimates, it reaches roughly 267 monthly active users and generates around $<10K monthly revenue (100% IAP / 0% ads). Store metadata: updated Apr 16, 2026, version 1.
Data tracking: SDKs and third-party integrations were last analyzed on Apr 14, 2026.
Store info: Last updated on App Store on Apr 16, 2026 (version 1).
4.12★
Ratings: 101
Screenshots
App Description
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.