Have you ever been curious about what your heart rate is? If so, Cardiio is an app that allows you to do so. Cardiio provides easy step by step instructions on how to use the app. Instead of having to go to the doctor to check your heart rate, all you will need is your smart phone to do so. Having Cardiio to your access can provided a lot of advantages. You can check for abnormalities, manage your target heart rate during rest or exercise, and as a bonus the app provides a heart healthy 7 minute workout. Having this app allows you to become knowledgeable, and can help decrease your risk for heart disease. If you are someone who has heart disease then this app should be a must. You are able to monitor your heart rate on your own, which is crucial to know when diagnose with heart disease. The best part about this app is that it is free.