It looks like it was built in Delphi or WinForms circa 2005. The buttons are small for touchscreens. On a 4K display, you need reading glasses to hit the "Record" button.
Uses your device's microphone to capture sound in real-time, instantly rendering high-definition geometric patterns on your screen. Leading the Charge: Software Tonoscope 2
Many enthusiasts use portable tonoscopes to visualize the vibrations of chanting or "healing frequencies" during meditation sessions. Getting Started