When comparing Runtastic vs Sygic, the Slant community recommends Runtastic for most people. In the question“What are the best MotionX-GPS alternatives for Android?” Runtastic is ranked 5th while Sygic is ranked 6th. The most important reason people chose Runtastic is:
Runtastic is capable of informing users of their pace, distance traveled, heart rate, and altitude, along with a detailed map that is saved into "history".
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Pros
Pro Accurate exercise tracking
Runtastic is capable of informing users of their pace, distance traveled, heart rate, and altitude, along with a detailed map that is saved into "history".
Pro Includes an audio coach
The audio coach provides updates at each checkpoint. The trainer is capable of telling the user total duration, pace, speed, calories burned, calories burned, and heart rate (if wearing a monitor).
Pro Support for interval training
This app encourages users to utilize their interval training feature. This feature is easy to use because it is integrated with their voice coach who well notify the runner when the next interval is arriving.
Pro Keeps a detailed history
The completed workout's map is saved along with all of the data collected about the workout. Because of this feature, users can easily track their improvement and accurately set goals.
Pro Includes useful metrics
Pro Heads up display
Pro Offline navigation
Internet connection is not required.
Pro Lane guidance
Pro Detailed and up to date commercial map data
Utilizes commercial data for its maps. While not strictly better it can have more up-to-date map data than OSM with better coverage. This is also the reason for the the good address data.
Pro Good address data
This app can locate address without external data.
Cons
Con Nags for "Gold Membership" even in paid "Pro" app
Con Updates require running the 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.
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.