The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From Troy Brant:
RunMonster is the premiere app for recording your workouts using your iPhones GPS. RunMonster shows your time, pace, distance, and calories burned as you exercise, all overlaid on a beautiful map. And its the only exercise app thats smart enough to detect whether youre running, biking, or walking. It can even tell if youve exercised on the same route twice! New in version 1.1 (iOS 4 support): Multitasking - Take a call, answer a text, or otherwise exit the app, and RunMonster will continue recording your workout. Retina display artwork - Every image in the app has been upgraded to look beautiful on iPhone 4. Improved maps - Pinch-to-zoom is now supported, as well as alternate map types such as satellite view. Features: Record your runs, walks, and bike rides using your iPhones built-in GPS Check your stats, including distance, pace, time, and calories burned, at any point during your workout See a live Google Terrain View map of your route Let RunMonster intelligently name your workouts based on nearby street names Watch as RunMonster automatically groups together similar workouts Let RunMonster automatically detect whether you ran, biked, or walked Examine your splits and other detailed statistics after youve finished a workout View your full workout history on your phone, grouped by week or route Relax as your workouts are backed up automatically to RunMonster.com Export your workouts via email Upgrade to RunMonster Pro to get these additional features: Hear your workout statistics read aloud during your workouts Customize the announcement interval and select which stats you would like to hear See gorgeous, interactive visualizations of your workout data Control your music library without leaving RunMonster Use gestures to easily switch between songs as you exercise See your pace for each song you listened to during your workout Note: Continued use of GPS running in the background can dramatically decrease battery life.
iOS 4 support: Multitasking - Take a call, answer a text, or otherwise exit the app, and RunMonster will continue recording your workout. Retina display artwork - Every image in the app has been upgraded to look beautiful on iPhone 4. Improved maps - Pinch-to-zoom is now supported, as well as alternate map types such as satellite view.