Seismometer on iPhone

If you have an iPhone or an iPod Touch, you can download a free app from the Apple App Store called iSeismometer. It is a mini seismometer capable of detecting vibrations in three axes. It is surprisingly sensitive. I place it on the platter of my TT and it can detect my footsteps and the running dishwasher in the kitchen. It should be useful for fine turning vibration control tweaks. No more guess work. Did I mention it is free?