I have the mybreakspeed app on the Droid and it's pretty damn accurate. If you think about the price you pay, 6 bucks in comparison to the break competition radars you have billiard expos, it's worth it.
I haven't done much reading on this app, but I'm assuming that you could get variance depending on where you are located. It doesn't seem like the app takes in consideration the density of air, which does effect the speed at which sound travels. So whether you live in California, versus if you lived in Denver, Colorado (Mile High City), Your break speeds may vary
I haven't done much reading on this app, but I'm assuming that you could get variance depending on where you are located. It doesn't seem like the app takes in consideration the density of air, which does effect the speed at which sound travels. So whether you live in California, versus if you lived in Denver, Colorado (Mile High City), Your break speeds may vary