You Need A Map 4+

Offline 3D topo maps


Designed for iPad

    • 4.3 • 43 Ratings
    • Free
    • Offers In-App Purchases



The entire USA in your pocket. Reduced resolution terrain to fit inside app.

If you get lost or in an emergency, YOU NEED A MAP! A map that covers the entire USA, all 50 states. A map that works everywhere even without a cell phone signal. A map that shows not just roads but also terrain, streams, lakes and other landmarks.

Note: If you would prefer a small app that caches online maps covering the entire world, please see the More by GrangerFX section below and try the free Scenic Map app. Get You Need A Map if you want an offline map the entire USA as a single large download. The paid apps have built in maps with full resolution terrain.

Your iPhone has a great online map but all it takes is one wrong turn and you could find yourself lost with no cell phone signal. What is the fastest way back to the highway? Should you go forwards or back? Is there a better road just a short distance away? Is there a raging stream or an steep cliff between you and the road? YOU NEED A MAP!

You Need A Map is a huge application. It has to be. It contains every mountain, hill, stream, lake, pond, freeway, highway, local road and track. In addition it contains many buildings, trails, railways, points of interest and polygon features. It has everything you need to find out where you are and what is around you anywhere in the USA.

Most navigation apps on the iPhone and iPad must transfer all their maps from servers on the internet. This can be slow in areas with only 2G coverage or completely unavailable in wilderness areas where a map would be most useful. You Need A Map solves this problem by storing maps directly on your iPhone or iPad. This extremely fast high quality software renderer is the first of its kind for mobile devices.

If you do have a cellular or WiFi internet connect, Satellite image overlays add breathtaking detail and realism to the maps (tap preset 2 or 4 when Online Map is enabled). You can use them as you travel to see what is hidden from view at ground level. This takes moving maps to a whole new level.

Tap the arrow in the toolbar to enable GPS tracking. As you move, you will generate a track file which you can replay. You can also import GPX tracks generated in other programs and play them. While recording or playing a track, the map will be centered on the current location and rotated towards the direction of travel and rendered in 2D or 3D with silky smooth animation. When playing a track, you can speed up, slow down, pause, restart or skip to the end. Send your GPX tracks to other apps or email them.

Want to learn more about a map feature? Click the target icon and center it under the compass rose to display its name, feature type, urban area, state, elevation and coordinates. You will also see a bearing line back to your current GPS location or from your location to a selected waypoint. The status will display the direction and distance along with the map and GPS elevation, the track length, and your current speed and direction of travel

You Need A Map uses the same code as Scenic Map and has most of the same features. These include many map customization options, customizable waypoints, direction and bearing information, a smooth scrolling moving map display while driving or flying, city search and much more. You can also get the full feature set of Scenic Map with an in-app purchase including the new online maps of the entire world.

Documentation, detailed coverage maps, installation guide and blog are available on

You Need A Map covers the entire USA including all 50 states

Map data © OpenStreetMap and contributors under the Open Database License

You Need A Map supports GPS tracking while the app is in the background.
Caution: Continued use of GPS running in the background can dramatically decrease battery life.

What’s New

Version 1.8.17

Additional map files will download the first time this app is installed. Please allow the download to complete before using the map offline. The download status is shown at the top of the settings menu. When the download is complete, the Online Maps option will appear.
1.8.17: Low storage notifications appear reliably when downloading the additional maps.

Ratings and Reviews

4.3 out of 5
43 Ratings

43 Ratings

Gundog55 ,


I’ve used this flying across the country as a pilot and in the mountains hiking. No cell signal needed and the ability to leave a track so you can follow it back out.

Airborne427 ,

Great offline navigation!

Excellent! Just used this app on a scenic mountain drive. Not having to worry about losing date in the mountains is a great piece of mind and the 3D topo greatly enhances situational awareness. I also find not using turn by turn directions to be less intrusive, especially for a spontaneous drive. Just use the GPS location and the ground track to make sure you don't make a wrong turn somewhere. Can't wait to take this hiking.

Clarknet ,

Great in so many ways

Key use cases for me…

1. Security- a map at all times of the US downloaded on your phone. I keep an old iPhone 5 loaded up and stored kn the glove compartment. Doesn’t need any cell, just some power. Find your way anywhere in US when cell towers aren’t around.

2. As a photographer- I plan shots ahead of time, especially important for elevation simulation along with sun / shadow simulation. Amazing for this.

3. As an semi outdoorsy enthusiast- an always available map for the backwoods, kayaking, any remote areas.

4. Just plain fun. Visit areas and see the topography in ways others apps just don’t.

5. I have not uploaded GPX files, but I should. Could be cool to see my recorded mountain bike rides from Motion X (GREAT GPS app)

Thanks for building this app!

App Privacy

The developer, GrangerFX, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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