Of all the different fitness apps available for smartphones, one of the most popular for runners—with more than 10 million users and an Editor's Choice Award from PC magazine—is Runtastic. Its features include distance, speed, elevation, pace, mile markers, calories burned, and GPS maps.
Both are offered in limited free versions, equipped with standard GPS tracking, map views, training history, and weather. The pro versions ($4.99) of both apps adds a variety of neat features.
The pro upgrade offers downloadable maps for when the ride goes off the grid, as well as an auto pause feature when you need to catch your breath. Want a soundtrack to accompany you? No problem. Both apps offer an integrated music player, and even a cheering feature for when you prefer the sounds of friends and family instead of tunes.
Unlike its flagship application for runners, which runs on multiple smartphone platforms, the two new cycling apps are currently only available for iPhone users, though with its track record, we wouldn't be surprised if they extend their services soon.
To really paint a vivid picture of your body in motion, Runtastic offers compatible hardware such as its speed and cadence sensor and heart monitors.