# iNavX vs Lake Champlain

The clearest difference is price: iNavX at Free against Lake Champlain's $2.99. iNavX also leads on review sentiment (44% vs 0%) and update cadence (every 5 weeks vs every 26 months). Lake Champlain's advantage is in-app purchases (none vs 11) and ads (none vs shown). On chart position and device support there is nothing between them.

iNavX is free to download; Lake Champlain costs $2.99 up front. iNavX sells 11 in-app purchases, starting at $9.99 per month. Lake Champlain asks for nothing beyond the download.

iNavX ships an update every 5 weeks, Lake Champlain every 26 months. The most recent releases landed on October 15, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | iNavX | Lake Champlain |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| 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** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 26 months |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | **#130** | #154 |
| Size | 298 MB | 120 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NavX Studios LLC](https://appshunter.io/developer/286616283) | [Vishwam B](https://appshunter.io/developer/1068325932) |

## What reviewers say

### iNavX

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

**Currently charting:** #130 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 (11)**

| 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 |
| Explorer Chartbooks - Bahamas | $69.99 | 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


### Lake Champlain

[App page](https://appshunter.io/ios/app/lake-champlain-boating-map/id1094847714)

**Currently charting:** #154 Top Paid · Navigation (US App Store)

This app provides advanced marine raster nautical charts for various water activities. It offers seamless chart overlays, offline map display, and GPS tracking for easy navigation. Users can also add favorite markers and find points of interest.

**Highlights:** Advanced marine raster nautical charts, Seamless chart overlays, Offline chart display, GPS tracking, Unlimited favorite markers, Distance measurement, Points of interest search

**In-app purchases:** none


## Frequently asked questions

### Is iNavX free?

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

### Is Lake Champlain free?

Lake Champlain costs $2.99, with no in-app purchases.

### Do iNavX or Lake Champlain have ads?

iNavX shows ads; Lake Champlain does not.

### Which is updated more often, iNavX or Lake Champlain?

iNavX ships an update every 5 weeks, and Lake Champlain every 26 months. Most recently, iNavX was updated on October 15, 2026 and Lake Champlain on October 4, 2026.

### Which is more popular, iNavX or Lake Champlain?

iNavX currently peaks at #130 in the App Store charts, and Lake Champlain at #154. Chart position reflects recent download velocity rather than total install base.

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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.*