iMapGJ vs HUD Nav
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iMapGJ
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.
- View GIS maps
- City of Grand Junction data
- Mobile access
- Supports iPhone, iPad, iPod
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View the City of Grand Junction GIS maps on your iPad, iPad mini, iPhone, or iPod Touch!
HUD Nav
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.
- 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
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Transform your iPhone and iPad into a head-up display for any car with HUD Nav - Turn by turn Head up display navigation. Look for a location, chose a route and place your iPhone/iPad on the dashboard — you’ll see the directions, distances, and other information, reflected on your windshield. Drive safer and keep your eyes on the road, and know in advance what’s ahead. Features: - Watch the direction and distance to the next turn, right on the windshield - HUD interfaces with clear, simple and non-distracting information that you understand immediately - Double tap the HUD to change the information displayed. 6 different modes are available: + Direction and distance to the next turn + Direction, road/street name, and distance to the next turn + Direction and distance to the next turn, remaining distance to destination and expected time arrival (ETA) + Detailed direction, road/street name, and distance to the next turn + Map, direction and distance to the next turn + Map, direction, road/street name, and distance to the next turn - Get voice instructions and drive with a co-pilot - Choose the voice that guides you (available in some languages) - Motorcycle mode: the HUD is not mirrored so you can use the app while riding your bike, or driving in bright conditions - Save places and locations in the Historic to quickly drive to them later. Edit your historic and rename places/locations, organize them or delete them - Works with Apple Maps app: send routes from Maps to the app, and drive them with the app HUD Note! - On a clear day or bright conditions, the device screen brightness is typically insufficient to give a decent reflection for HUD mode. In that situation, you can use the app in motorcycle mode with the phone fixed with some mount. At night, in dusk, or in dull weather the reflection is normally well-discernible. - When driving, make sure that your iPhone or iPad is well fixed in some mount or on some sticky pad, and doesn't prevent you from clearly seeing the road. Continued use of GPS running in the background can quickly drain your device battery. Note that the app uses the same "route search engine" as the Maps app. However, as not all the iOS features are available in all countries, you can check the list of features available for your country at https://www.apple.com/ae/ios/feature-availability/. If you face any problems or find any bugs, please email us at support@seb-appstore.com or report the bug right from the app. We appreciate your feedback! Check out our other iPhone and iPad apps at www.seb-appstore.com, with hundreds of discounted and free apps.
Screenshots
Verdict
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 (#126 vs unranked). On ratings volume, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | iMapGJ | HUD Nav |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 5.0 (3 ratings) — better | 4.3 (3 ratings) |
| Positive reviews | 100.0% of reviews — better | 30.0% of reviews |
| Number of ratings | 3 | 3 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Paid |
| Best chart rank | — | #126 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.2 | 15.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | City of Grand Junction | Sebastien BUET |
Customer experience
iMapGJ
HUD Nav
In-app purchases
iMapGJ
No in-app purchases
HUD Nav
- Maps HUD$1.99









