# iMapGJ vs HUD Nav

The clearest difference is review sentiment: iMapGJ at 100% against HUD Nav's 30%. iMapGJ also leads on price (Free vs $2.99) and rating (5.0 vs 4.3). HUD Nav's advantage is chart position (#145 vs unranked). On ratings volume, update cadence, ads and device support there is nothing between them.

iMapGJ is free to download; HUD Nav costs $2.99 up front. HUD Nav sells 1 one-off in-app purchase. iMapGJ asks for nothing beyond the download.

iMapGJ holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews point the same way: 100% of iMapGJ's written reviews are positive against 30% of HUD Nav's.

iMapGJ ships an update every 3 months, HUD Nav every 2 months. The most recent releases landed on October 6, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | iMapGJ | HUD Nav |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/imapgj/id773519142/reviews)** | [4.3 (3 ratings)](https://appshunter.io/ios/app/hud-nav/id993733853/reviews) |
| Number of ratings | 3 | 3 |
| Positive reviews | **100.0% of reviews** | 30.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#145** |
| Size | 1 MB | 17 MB |
| Requires iOS | 15.2 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [City of Grand Junction](https://appshunter.io/developer/773519145) | [Sebastien BUET](https://appshunter.io/developer/321941181) |

## What reviewers say

### iMapGJ

[App page](https://appshunter.io/ios/app/imapgj/id773519142)

Access and view Geographic Information System (GIS) maps for the City of Grand Junction. This application is designed for mobile devices, providing map data on the go.

**Highlights:** View GIS maps, City of Grand Junction data, Mobile access, Supports iPhone, iPad, iPod

**Features:** macOS Compatibility

**In-app purchases:** none


### HUD Nav

[App page](https://appshunter.io/ios/app/hud-nav/id993733853)

**Currently charting:** #145 Top Paid · Navigation (US App Store)

This navigation app transforms your device into a head-up display for your car, reflecting directions and distances onto your windshield. Drive safer by keeping your eyes on the road, with customizable display modes and voice guidance.

**Highlights:** Head-up display for windshield reflection, Turn-by-turn directions and distance, Customizable HUD information modes, Voice instructions with language choice, Motorcycle mode for bright conditions, Save and organize favorite locations, Integrates with Apple Maps routes

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Maps HUD | $1.99 | one-time |


## Frequently asked questions

### Is iMapGJ free?

iMapGJ is free to download, with no in-app purchases.

### Is HUD Nav free?

HUD Nav costs $2.99, and also offers in-app purchases.

### Which has better reviews, iMapGJ or HUD Nav?

iMapGJ is rated higher. iMapGJ averages 5.0 out of 5 from 3 ratings, while HUD Nav averages 4.3 from 3 ratings.

### Do iMapGJ or HUD Nav have ads?

Neither iMapGJ nor HUD Nav shows ads.

### Which is updated more often, iMapGJ or HUD Nav?

iMapGJ ships an update every 3 months, and HUD Nav every 2 months. Most recently, iMapGJ was updated on October 6, 2026 and HUD Nav on October 12, 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.*