With numerous smartphone apps on the market for tracking your fitness activities, it can be hard to know which one to go for. I have tried a few different apps and websites over the years, starting out using iPhone apps and later using a Garmin watch to track my activities. This short guide compares some of the more popular activity-tracking websites and apps. RunKeeper http://www.runkeeper.com RunKeeper was one of the first fitness apps that I tried for analysing and tracking my running. The smartphone app is very simple and easy to use, providing an overview of each activity along with a map and split times. The app syncs with the RunKeeper website to provide slightly more detailed reports and graphs of activities. Pros Good value for money, it once cost $9.99 but is now free. For those who would like to take advantage of more detailed reporting, there is an elite version at a