aDyno turns your Android phone into a (not so accurate) dynamometer! I've installed this app on my droid, attached it to my window dock and tried it out. It is definitely a cool idea but the sensitivity is a bit high, showing lots of tiny vibrations from the car. When you change the sensitivity level to another, lower, preset level it is difficult to get the app to even respond. If you find enough time (and legal space) to use this application it is very entertaining. It has shown ratings from ~150hp to over 400hp for my WRX, but still a neat application. For the hardware the publisher was given to work with, I'd say they have done a fantastic job and the app deserves 5 stars even in it's Beta stage!