【實用交通運輸app】Topo Reader|最夯免費app-綠色工廠好玩App

Download high resolution topographic maps for GPS use even while offline and with no need for cellular service. All for free and no subscriptions.Topo Reader is designed for road trips, camping, hiking, exploration and geographical history. Topographic maps are aligned with the Apple maps view for easy referencing and intuitive touch navigation.This software utilizes the latest capabilities of IOS 8 offering the highest performance with fast start up, map rotation, rendering and unbeatable zoom with full detail resolution. Map downloads dispatch in the background so you can continue using the app (ads play during post-download processing).Topo Reader has a builtin index of over a quarter million U.S. Geological Survey topographic maps describing the topography of every region and island territories of the United States of America. Historical versions date as far back as year 1882. Install a map quad by pressing and holding a point on the reference map and discover the USGS maps available at that coordinate and the unique names given to every quad by the cartographers.The limits don't stop there with just USGS maps. Import "Geospatial PDF" maps from the web, iTunes and email. Many local and national park services offer PDF map from their web sites which automatically install into the Topo Reader app. And, if you reside outside the USA check with your government services for topographic and aeronautical sectional maps with embedded geospatial metadata.Cannot find that map you downloaded but know where in the world it is located. Simply zoom out the reference map view and all the topo maps become a colorful violet and partially transparent so you can spot your map. Installed maps are managed in a table format which can be sorted by name, distance, and scale. Multiple versions of the same map can be stacked on top of one another and made visible or hidden using two finger swipes.Planning a hike somewhere and want to know the distance of your jaunt. Download the map and use the dual mode ruler to measure the path distance and know the answer to "how much farther?"This product is the free version of the unlimited 'Topo Nomad' app. This Reader version is limited to several map installs. If you like this app then please consider purchasing the Topo Nomad upgrade and know that you are donating to the continuing development of this software. The Nomad version include waypoints and geocoding search powered by Google which has an amazing ability to locate geographic features anywhere in the world, and also, NO ads.Features: • No need for cellular service to use • Use the GPS on downloaded topo maps while offline • Dual mode ruler with orthographic line and path measuring • Full app usability while maps download in the background • Displays footprint grid and quad names • Aligns map datums to WGS84 GPS coordinates • Dynamic map stitching • Cropping of map margins for one big map grid • Automatic USGS topographic map download for your current location • Uses GPS location service to identify your location on a topo map • Miles, Feet, Kilometers, Meters, Nautical Miles units • Latitude and Longitude decimal and minutes seconds display • Import maps downloaded from the USGS in zip and PDF file formats • Maps are free to download and never a subscription • Enter coordinates in decimal, minutes and second formats • Map rotation and orients map to follow your heading • Imports GPX waypointsThis free app is sponsored by video advertisements. When fading to an ad, you can set frequency period and an ad profile if the targeting market is not of your preference or demographic. Ads run during map installs to free memory for this processing.Not currently supported: Tracks; Route; Geo TIFF.Topo Reader app stores up to four(4) topographic maps and required deleting maps to download another after that.Not all geospatial metadata formats and datums are supported.Developed in Arizona, California, Oregon and Hawaii.