FreqBox - Ghost Box is a free Android application developed by FireCoding in the Utilities & Tools category. This program is designed for ghost hunters, urbex explorations, and abandoned places. The application generates white noise in different frequencies, simulating a signal sweep of FM/AM. It scans several audio banks of psycho phonies recordings combined with a no-probability algorithm detecting anomalies.

The application provides the spirits with the opportunity to communicate from the electric voice phenomenon and modulate the sound. The ghost can manipulate the frequency of the output audio and generate paranormal interaction. Also known as Ghost Tracker or Demon Recorder, this tool is experimental and based on the developer's own research of the phantom field. It is important to note that there is no guarantee for spirit communication with any SBox.