Resonance - Vibration Analysis Tool is a free Android app developed by Here Pluto Laboratories that helps structural engineers collect vibration data from their phone's in-built accelerometer. With its fast and accurate frequency content analysis using Fast Fourier Transformation, it is quick and easy to check the serviceability of suspended floors and measure the fundamental period of cantilever structures.

The app also diagnoses issues with annoying floor vibrations and checks for resonance on various machinery. It estimates damping and displacement and aids in the design and validation of isolator mounts. The app allows users to record and save their results to their device and adjust delay and total time of recording to suit their application. However, the developer warns that the use of the Resonance Vibration Tool Analysis app is at the user's own risk and that the app is provided on an AS-IS basis.