The software turns your smartphone into MultiChannel Analyser (MCA) which get signal over the mic-input. Digital Pulse Processing module measures height of pulses and show result as a hystogram or a curve. This is an analog of PC-software, known as Pulse Recorder and Analyser (PRA). Designed and tested with AtomSpectra 3 hardware, but can be useful for any pulsed signal source with appropriate amplitude and bandwith. First of all intended for amateur gamma spectroscopy.
Try branded smartphones for best results.