# LuckGrib vs NavimetriX

The clearest difference is update cadence: NavimetriX at every 9 days against LuckGrib's every 2 months. NavimetriX also leads on iOS requirement (16.0 vs 18.4). LuckGrib's advantage is ratings volume (343 vs 1). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. LuckGrib sells 6 one-off in-app purchases and NavimetriX sells 1 in-app purchase, starting at $69.99 per year. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for LuckGrib against 5.0 for NavimetriX. That said, the two scores are not equally well evidenced: LuckGrib has 343 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 93% of LuckGrib's written reviews are positive against 86% of NavimetriX's.

LuckGrib ships an update every 2 months, NavimetriX every 9 days. The most recent releases landed on October 21, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | LuckGrib | NavimetriX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (343 ratings)](https://appshunter.io/ios/app/luckgrib/id1318450117/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/navimetrix/id6751144072/reviews)** |
| Number of ratings | **343** | 1 |
| Positive reviews | **92.7% of reviews** | 86.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 173 MB | 121 MB |
| Requires iOS | 18.4 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Craig McPheeters](https://appshunter.io/developer/590365129) | [SOFT4SAIL](https://appshunter.io/developer/1647221910) |

## What reviewers say

### LuckGrib

[App page](https://appshunter.io/ios/app/luckgrib/id1318450117)

This app provides advanced weather data visualization, downloading, and routing for sailors and weather enthusiasts. It offers access to a wide range of global and high-resolution weather and ocean models, with features for optimizing routes and analyzing complex weather parameters. Remote access via satellite is also supported.

**Highlights:** GRIB file reader, viewer, and downloader, Advanced weather routing and route analysis, Satellite data access, High-resolution global and regional weather models, Ocean current models, Detailed weather parameter analysis

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 14-day Trial | Free | one-time |
| 14 day trial of Offshore Data | Free | one-time |
| 14 day Weather Routing trial | Free | one-time |
| LuckGrib weather data access | $29.99 | one-time |
| Premium Offshore Data access | $59.99 | one-time |
| Weather Routing access | $59.99 | one-time |

**What reviewers like**

- 🚀 Excellent weather forecasting and routing
- 👍 Intuitive and user-friendly interface
- 💡 Wide range of weather models and data sources
- 🚢 Tailored for sailors and offshore navigation
- 💰 One-time purchase, no subscription fees

**What reviewers complain about**

- 🐛 Occasional issues with GRIB file downloads
- ⚠️ Steep learning curve for some features
- 🔍 Lack of support for some boat types (e.g., catamarans)

**Reported bugs**

- Reported issues with 'no wind data for start time'
- Occasional app crashes or freezes

**Requested features**

- Integration with boat instruments and data logging
- More advanced routing options and customization
- Improved support for regional weather models


### NavimetriX

[App page](https://appshunter.io/ios/app/navimetrix/id6751144072)

This app provides comprehensive marine navigation tools for sailors, including advanced weather forecasting, route optimization, tide predictions, and chart access. It synchronizes data across devices and integrates with onboard instruments for real-time performance tracking.

**Highlights:** Multi-platform cloud sync, Weather, waves, and currents forecasting, Advanced route optimization, Tides & tidal currents, Marine charts with offline access, NMEA & AIS integration, Performance tracking

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium subscription | $69.99 | per year |


## Frequently asked questions

### Is LuckGrib free?

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

### Is NavimetriX free?

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

### Which has better reviews, LuckGrib or NavimetriX?

NavimetriX is rated higher. LuckGrib averages 4.9 out of 5 from 343 ratings, while NavimetriX averages 5.0 from 1 ratings.

### Do LuckGrib or NavimetriX have ads?

Neither LuckGrib nor NavimetriX shows ads.

### Which is updated more often, LuckGrib or NavimetriX?

LuckGrib ships an update every 2 months, and NavimetriX every 9 days. Most recently, LuckGrib was updated on October 21, 2026 and NavimetriX 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.*