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5 Best Free alternatives to Google maps for Android smartphones



Navigation apps can be quite handy when it comes to searching for routes to different destinations. These apps can help you save time and money.
SO FIRST WHAT IS GPS?
The Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24 satellites placed into orbit by the U.S. Department of Defense. GPS was originally intended for military applications, but in the 1980s, the government made the system available for civilian use. GPS works in any weather conditions, anywhere in the world, 24 hours a day. There are no subscription fees or setup charges to use GPS.

How it works

GPS satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. GPS receivers take this information and use trilateration to calculate the user's exact location. Essentially, the GPS receiver compares the time a signal was transmitted by a satellite with the time it was received. The time difference tells the GPS receiver how far away the satellite is. Now, with distance measurements from a few more satellites, the receiver can determine the user's position and display it on the unit's electronic map.
GPS Screens
A GPS receiver must be locked on to the signal of at least 3 satellites to calculate a 2-D position (latitude and longitude) and track movement. With four or more satellites in view, the receiver can determine the user's 3-D position (latitude, longitude and altitude). Once the user's position has been determined, the GPS unit can calculate other information, such as speed, bearing, track, trip distance, distance to destination, sunrise and sunset time and more.

How accurate is GPS?

Today's GPS receivers are extremely accurate, thanks to their parallel multi-channel design. Our 12 parallel channel receivers are quick to lock onto satellites when first turned on, and they maintain strong locks, even in dense foliage or urban settings with tall buildings. Certain atmospheric factors and other sources of error can affect the accuracy of GPS receivers. Garmin GPS receivers are accurate to within 15 meters, on average.
GPS Signals
Newer Garmin GPS receivers with WAAS (Wide Area Augmentation System) capability can improve accuracy to less than 3 meters on average. No additional equipment or fees are required to take advantage of WAAS. Users can also get better accuracy with Differential GPS (DGPS), which corrects GPS signals to within an average of 3 to 5 meters. The U.S. Coast Guard operates the most common DGPS correction service. This system consists of a network of towers that receive GPS signals and transmit a corrected signal by beacon transmitters. In order to get the corrected signal, users must have a differential beacon receiver and beacon antenna in addition to their GPS.
SO COMING TO THE TOPIC HOPE YOU LEARNED A LOT ABOUT GPS SYSYTEM
It is very important for a navigation app to offer proper address search, trip settings and also an updated listing of landmarks and establishments. Outdated data, either from the map provider’s end or because of your laziness in not updating, could be quite dangerous while driving.
And a very important thing that you should keep in mind - all navigation apps tend to heat up the phone considerably and drain the battery very quickly, while in use. This could have a detrimental effect on the smartphone’s hardware, battery life and longevity. Use these apps only when very necessary, and always fiddle with them with the car safely parked on the side, with the hazard lights switched on.

FINALLY WE ARE WITH 5 Best alternatives to Google maps for Android smartphones

GPS Navigation & Maps Sygic
   GPS Navigation & Maps Sygic- screenshot
Sygic GPS Navigation & Maps is the most advanced GPS navigation app for Android with 3D offline maps from TomTom, accurate door-to-door voice guided navigation and free map updates. Sygic GPS Navigation & Maps offers high-end navigation experience with innovative features for your safety & comfort. Live traffic & police radar/speed camera warnings to find the fastest route and avoid traffic delays. Parking place suggestions with info about availability and price. Tourist attractions & pedestrian navigation. Head-up Display (HUD) navigation projected onto car’s windshield…
Whether you are travelling, commuting to work, or driving professionally Sygic GPS Navigation & Maps is your one map for everything.
HERE Maps - Offline Navigation
   HERE Maps - Offline Navigation- screenshot
Maps inspire us. They invite us to explore. Maps challenge us to find delight in familiar places, and to celebrate the discovery of new ones. They guide us as we travel new routes and offer the reassurance that we'll always be able to find our way home. And now, with HERE Maps, all you need is your phone to put the world in your pocket. 

HERE Maps is a companion for all your journeys, near or far. Handle your morning commute with ease or take to the open road with navigation designed to make your life easy thanks to real-time traffic, turn-by-turn voice guidance, speed limit information and a simple directions list. All you have to do is drive. 

Or find a different way to get around. Hop on the bus or take the train, with public transit routes for over 1,200 cities around the world that include timetables and full directions to guide you through every transfer. Drive, ride, or walk -- no matter where you are or where you're going, you have what you need to travel like a local. 

Underground on the subway or the middle of a national park, HERE Maps is something you can rely on thanks to Offline Navigation. Search for places and find your way with turn-by-turn voice guidance and directions for every transit mode -- anywhere, no internet needed. Download maps for over 100 countries, all completely free. 
Offline maps & Navigation
   Offline maps & Navigation- screenshot
Features:
offline gps navigation
offline maps
free map updates
multi-language voice navigation (33 languages supported)
GPS / Glonass ready
speed limit warnings
fixed speed camera warnings (available in selected countries only)
3D buildings
lane guidance
large POI database
pedestrian, car, or even bee-line navigation
night mode based on local sunset time
track recording
GPS Maps FullFunction
  GPS  Maps FullFunction- screenshot thumbnail
The most easy way to know where you are.
Worldwide Maps, Exact GPS. Easy Navigation and Address Search in one App. Try!
MAPS.ME - GPS Navigation & Map
  MAPS.ME - GPS Navigation & Map- screenshot thumbnail
Get instant access to detailed maps of all countries from anywhere in the world! No internet connection is required. 
NEW! WALKING DIRECTIONS ARE OUT. Find the quickest way to get to your destination.
➣ Over 40M downloads worldwide.
➣ TOP 1 mobile travel app in more than 100 countries.
➣ Featured in Forbes, TechCrunch and Washington Post.
Optimised for your phone and tablet (even without 3G).