Podrunner app
Created by Steve Boyett, a Los Angeles-based DJ, the Podrunner app features an extensive library of Boyett’s upbeat tracks, each one mixed for a specific beats-per-minute tempo. Boyett’s techno/house/funk-based mixes (each one is about an hour long) range from 130 to 180 BPM. So, if you’re feeling like you need an easy day, queue up a track from the lower BPM side, and if you’re looking to pound out some intense miles opt for one several at the 180 BPM level.
Motion Traxx
Motion Traxx is another beats-per-minute collection of workout music — mixed by corporate suit-turned-DJ Deekron — featuring a 12o to 200 BPM range. 
The app ($2.99 on iTunes) consolidates all the free podcasts into one convenient place, without making you download the tracks to your device. Because the app streams content, surfing the library for tracks is much faster than waiting for each to download. It’ll also let you speed up the tempo of any mix up to twice as fast. Podcasts are available outside of the app with a free subscription through iTunes.
Garmin Fit
The Garmin Fit app — for under a buck – will give you all the essential features of a GPS watch for a fraction of the price. The catch is that you’ll have to carry your phone if and when you want to track your workout. This app is incredibly user-friendly, and the display is clean and easy to understand, even with just a quick, mid-run glance. Garmin Fit will even let you set an auto lap preference, a feature the lower-priced watches don’t have. Garmin pulls from Google Maps, so during your workout you can watch yourself — as the familiar blue dot — in real time on a real map.
Fitocracy
Fitocracy is a social media site that turns fitness into a game. The site, which has been in beta form until recently, released its new free iPhone app in March. The app gives you mobile access to mostly all of the features on the browser version — track your workouts, view point totals and get to your feed — all in a clean and simple-to-use mobile format.
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