# SailTimer™ vs qtVlm

The clearest difference is review sentiment: qtVlm at 79% against SailTimer™'s 37%. qtVlm also leads on update cadence (weekly vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. SailTimer™ sells 12 in-app purchases, starting at $2.99 per month and qtVlm sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

SailTimer™ ships an update every 2 months, qtVlm weekly. The most recent releases landed on October 16, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | SailTimer™ | qtVlm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.5 (8 ratings)](https://appshunter.io/ios/app/qtvlm/id999110023/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | 37.0% of reviews | **79.2% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 126 MB | 100 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SailTimer Inc.](https://appshunter.io/developer/326309854) | [Meltemus SAS](https://appshunter.io/developer/999110022) |

## What reviewers say

### SailTimer™

[App page](https://appshunter.io/ios/app/sailtimer/id326309851)

Visualize wind and wave conditions before you head out on the water with this marine weather app. It uses crowdsourced data for more accurate, real-time forecasts than traditional satellite imagery. Track your GPS, create waypoints, and access offline charts for any boat type.

**Highlights:** Crowdsourced wind and wave map animation, Route viewing with aerial photos and land maps, Waypoint creation and GPS track saving, Offline map and chart usage, Follow-Me GPS tracking, Optimal tacking distance calculation for sailboats

**Features:** Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WNI Marine Weather Map | $2.99 | per month |
| Wind Animation | $2.99 | per month |
| Navionics Charts | $10.99 | per year |
| ActiveCaptain | Free | one-time |
| Polar Plot Learning | Free | one-time |
| Import NMEA data | $0.99 | one-time |
| SailTimer Pro Bundle | $7.99 | one-time |
| USA Atlantic Coast | $15.99 | one-time |
| USA Pacific Coast | $15.99 | one-time |
| USA Great Lakes | $15.99 | one-time |
| USA Gulf Coast | $15.99 | one-time |
| Cuba, Bahamas, Puerto Rico and US Virgin Islands | $15.99 | one-time |


### qtVlm

[App page](https://appshunter.io/ios/app/qtvlm/id999110023)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $49.99 | one-time |


## Frequently asked questions

### Is SailTimer™ free?

SailTimer™ is free to download, with in-app purchases available.

### Is qtVlm free?

qtVlm is free to download, with in-app purchases available.

### Do SailTimer™ or qtVlm have ads?

Neither SailTimer™ nor qtVlm shows ads.

### Which is updated more often, SailTimer™ or qtVlm?

SailTimer™ ships an update every 2 months, and qtVlm weekly. Most recently, SailTimer™ was updated on October 16, 2026 and qtVlm on October 18, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*