When comparing OsmAnd Maps & Navigation vs Sygic: GPS Navigation & Maps, the Slant community recommends OsmAnd Maps & Navigation for most people. In the question“What is the best offline GPS navigation app for Android?” OsmAnd Maps & Navigation is ranked 2nd while Sygic: GPS Navigation & Maps is ranked 4th. The most important reason people chose OsmAnd Maps & Navigation is:
[OSM] provides a map editable by everyone; just like the web-based encyclopedia, Wikipedia. Using a community edited map allows one to correct isses they encounter. Combined with the monthly turn around, these edits are added for navigation quickly. : http://www.openstreetmap.org/
Ranked in these QuestionsQuestion Ranking
Pro Based around crowdsourced OpenStreetMap data
OSM provides a map editable by everyone; just like the web-based encyclopedia, Wikipedia.
Using a community edited map allows one to correct isses they encounter. Combined with the monthly turn around, these edits are added for navigation quickly.
Pro Works offline once the maps are downloaded
Pro Excellent general map viewing
Sometimes one needs more than just navigation, they have a need to view a map or specify a specific route. OsmAnd provides a very nice, detailed map. This can be good for seeing what is around you or showing a place you are talking about to a friend.
It also provides a means to add waypoints on the map which can be used to dictate a specific route (not simple enough to do routinely).
Pro Routinely updated maps
Utilizing the community driven OpenStreetMap data has allowed for monthly publishing of new maps that the user can use. Though that doesn't necessarily mean the map data has changed.
Pro OpenStreetMap contributing made convenient
One can also utilize features to contribute back to OSM. This includes reporting a bug or adding a POI. This feature doesn't require an internet connection as the points can be uploaded latter upon request.
Pro Free and open source
Pro Helpful lane guidance
Lane guidance can assist in deciding if one should stay in the right or left lanes. OsmAnd provides detailed information on the number of lanes and which are valid for your chosen destination; based on the data available it may show too many or too few lanes.
Pro Contour lines enable understanding the terrain
Through the use of an additional plugin OsmAnd Maps & Navigation is able to utilize contour lines on its maps which helps view the landscape and terrain.
Pro Shows speed limit
Pro Highly precise address data
GPS Navigation & Maps Sygic is powered by Tom Tom map data, which is often used by governments as well as emergency services.
Pro Useful lane guidance
GPS Navigation & Maps Sygic provides lane guidance as a feature for safe lane maneuvering while driving which is great especially when on a highway of unknown locations being one never knows exactly what lanes to be in when merging or taking exits.
Pro Easily assess location with 3D Navigation
GPS Navigation & Maps Sygic provides a very detailed 3D world during navigation, with elevated hills and even city buildings which makes for a more realistic view of where one is in comparison to their surroundings.
Pro Local language guidance
Pro Safe projection like hands free heads up display
GPS Navigation & Maps Sygic offers an in app purchase to add on a Heads Up Display for the app. This works for nighttime driving by placing ones device up by the windshield and the device will reflect all information in the windshield for a convenient hands free experience that is on the level of where ones eyes already are.
Pro Commercial Map Data
Utilizes commercial data for its maps that are supplied by TomTom Maps. While not strictly better it can have more up-to-date map data than OSM. This is also the reason for the the good address data.
Con Poor navigation interface
The interface is not the most intuitive, though is continually progressing. It doesn't provide a 3D view like many navigation apps.
Con Slow rendering
It can take some time for an area to be rendered. This tends not to be a problem during navigation since only a small area must be rendered as the map moves, and this area isn't immediately needed; though likely a bigger issue with smaller screens.
Con No display when the next speed limit occurs
When driving on unknown streets you are often surprised by speed limits or town signs, so you have to friction brake.
Con Slow and sometimes poor search
Most often does not find what you are looking for (which is not caused by bad OSM data).
Con Terrible address data
This is a limitation of OSM's data, but it is unreliable for locating an address while offline. Even with internet it doesn't appear that it can locate most addresses.
Con Being based on OpenStreetMap data can be lacking
The use of OSM also has the drawback of many places not getting the attention needed for updates. Depending on the geographic location OSM may have the most detailed maps or the most bare/outdated map.
Con Near impossible to scroll through map
Due to the slow rendering (already mentioned) it is near impossible to scroll through OsmAnd's maps. You move the map only slightly and it takes ages to redraw all vector layers.
Con Bad map accuracy
Even the newest maps seem outdated and have many mistakes or inaccuracies. Entire ranges of house numbers are absent in some streets, 3d buildings are only present in some segments.
Con Updates require running app
After a Play Store update it is important to run the app once to download all the offline data again, otherwise it will not be usable when no external data is available. This is not only time consuming but inconvenient for those that may be in a hurry.
Con Poor map viewing
Sygic's interface is tailored to navigation. While viewing maps in 2D is possible, it populates the map with a bunch of POI icons which detract from street names. The biggest issue is how easy it is to select something or start navigation when zooming in/out.
Still usable for map viewing though.