# qtVlm vs EZ Celestial Navigation

The clearest difference is price: qtVlm at Free against EZ Celestial Navigation's $29.99. qtVlm also leads on update cadence (weekly vs monthly). EZ Celestial Navigation's advantage is rating (4.9 vs 3.7) and in-app purchases (none vs 1). On ratings volume, ads, device support and iOS requirement there is nothing between them.

qtVlm is free to download; EZ Celestial Navigation costs $29.99 up front. qtVlm sells 1 one-off in-app purchase. EZ Celestial Navigation asks for nothing beyond the download.

EZ Celestial Navigation holds the better App Store score, 4.9 against 3.7. Both are backed by a comparable volume of ratings — 9 and 26 respectively. Written reviews point the same way: 79% of qtVlm's written reviews are positive against 100% of EZ Celestial Navigation's.

qtVlm ships an update weekly, EZ Celestial Navigation monthly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | qtVlm | EZ Celestial Navigation |
| --- | --- | --- |
| Price | **Free** | $29.99 |
| Rating | [3.7 (9 ratings)](https://appshunter.io/ios/app/qtvlm/id999110023/reviews) | **[4.9 (26 ratings)](https://appshunter.io/ios/app/ez-celestial-navigation/id1547239240/reviews)** |
| Number of ratings | 9 | **26** |
| Positive reviews | 79.2% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | — | **#173** |
| Size | 100 MB | 153 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Meltemus SAS](https://appshunter.io/developer/999110022) | [EZ Celestial LLC](https://appshunter.io/developer/504153123) |

## What reviewers say

### 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 |


### EZ Celestial Navigation

[App page](https://appshunter.io/ios/app/ez-celestial-navigation/id1547239240)

**Currently charting:** #173 Top Paid · Navigation (US App Store)

This app simplifies celestial navigation using a sextant, providing tools to calculate your position at sea. It offers automated calculations or manual table access, with features for observation archiving and compass checks. Ideal for learning and practicing traditional navigation methods.

**Highlights:** Automated sight reduction and LOP plotting, Manual Nautical Almanac and Pub. 229 table access, Observation archiving and restoration, Compass check functionality, Printable Nautical Almanac pages and reports, Universal app for iOS and macOS

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is qtVlm free?

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

### Is EZ Celestial Navigation free?

EZ Celestial Navigation costs $29.99, with no in-app purchases.

### Which has better reviews, qtVlm or EZ Celestial Navigation?

EZ Celestial Navigation is rated higher. qtVlm averages 3.7 out of 5 from 9 ratings, while EZ Celestial Navigation averages 4.9 from 26 ratings.

### Do qtVlm or EZ Celestial Navigation have ads?

Neither qtVlm nor EZ Celestial Navigation shows ads.

### Which is updated more often, qtVlm or EZ Celestial Navigation?

qtVlm ships an update weekly, and EZ Celestial Navigation monthly. Most recently, qtVlm was updated on October 24, 2026 and EZ Celestial Navigation on October 25, 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.*