# iNavX vs GSSD

The clearest difference is ads: GSSD at none against iNavX's shown. GSSD also leads on update cadence (weekly vs every 5 weeks). iNavX's advantage is chart position (#100 vs unranked) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

Both are free to download. iNavX sells 10 in-app purchases, starting at $9.99 per month and GSSD sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

iNavX ships an update every 5 weeks, GSSD weekly. The most recent releases landed on November 10, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | iNavX | GSSD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (22K ratings)](https://appshunter.io/ios/app/inavx-marine-navigation/id286616280/reviews)** | — |
| Number of ratings | **22K** | — |
| Positive reviews | 43.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#100** | — |
| Size | 298 MB | 9 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [NavX Studios LLC](https://appshunter.io/developer/286616283) | [JONATHON CLAYTON MANGES](https://appshunter.io/developer/6790086909) |

## What reviewers say

### iNavX

[App page](https://appshunter.io/ios/app/inavx-marine-navigation/id286616280)

**Currently charting:** #100 Top Grossing · Navigation (US App Store)

This app provides comprehensive marine navigation tools, including worldwide chart coverage, weather forecasts, and AIS integration. It allows users to plan routes, track their position, and connect with onboard instruments for a complete boating experience.

**Highlights:** Worldwide marine chart access, Real-time GPS plotting, Waypoint and route management, GRIB weather forecasts, AIS integration, Nautical instrument connectivity

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Theyr Premium - Mobile (Monthly) for iOS | $9.99 | per month |
| iNavX Professional+ USA | $29.99 | per year |
| Navionics+ USA/Canada (iPhone) | $29.99 | per year |
| Navionics+ Caribbean (iPhone) | $44.99 | per year |
| Theyr Premium Weather | $49.99 | per year |
| iNavX Professional+ USA Canada | $59.99 | per year |
| C-MAP World Chart | $59.99 | per year |
| Navionics+ USA/Canada (iPad) | $79.99 | per year |
| Navionics+ Caribbean (iPad) | $79.99 | per year |
| AIS Live | $99.99 | per year |

**What reviewers like**

- 🚀 Accurate and precise navigation
- 📊 Comprehensive charting and navigation features
- 🛠️ Customizable instrument settings
- 🔄 Redundancy across devices
- 💨 Reliable performance over many years

**What reviewers complain about**

- 🤔 Clunky and unintuitive user interface
- 🗺️ Cumbersome chart management and downloading
- 🔋 Battery drain issues
- 💰 Expensive subscription model for charts
- 🐛 Stability issues and crashes

**Reported bugs**

- Inability to remove waypoints
- Inconsistent behavior when transitioning International Date Line
- Disappearing or missing chart data

**Requested features**

- Seamless chart switching and panning
- Integrated tidal and current data
- Support for more chart types and providers
- Improved route planning and editing tools
- Automatic chart updates and management


### GSSD

[App page](https://appshunter.io/ios/app/gssd-tendigit/id6790086907)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access | $4.99 | per month |


## Frequently asked questions

### Is iNavX free?

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

### Is GSSD free?

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

### Do iNavX or GSSD have ads?

iNavX shows ads; GSSD does not.

### Which is updated more often, iNavX or GSSD?

iNavX ships an update every 5 weeks, and GSSD weekly. Most recently, iNavX was updated on November 10, 2026 and GSSD on November 6, 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.*