My husband has developed out some iPhone apps for runners that I find useful and thought maybe some of you would as well.
The most popular is the free Running Pace Calculator. By entering a recent or goal race time and distance it will calculate your pace per mile. It will also calculate approximate equivalent performances at other distances and give suggested training paces to help you reach your goals.
My favorite one is the free What to Wear Running app. This app will pull your local weather based on your location and make recommendations on what you should wear running. I use it before I get dressed for my run to check the current weather conditions, I also take a peek at their recommendations even if my gear choice is slightly different than what they recommend it gives me an idea of what to wear so I don’t over or underdress.
If you use a heart rate monitor during your runs you may find the free Heart Rate Zones app useful. It calculates your heart rate zones, gives a description of each zone and recommends which zone you should be in for your different kinds of runs.