https://wccftech.com/todays-list-of-paid-apps-that-are-free-or-on-sale-at-the-play-store-6/ > Loads of apps this week. Some interesting ones too. > Turn your phone into a Spectrum Analyzer. Speccy is an Audio Spectrum Analysis tool, which visualizes the spread of sound frequencies in the audible (and inaudible) spectrum, detected through your device’s microphone, using Fast Fourier Transform signal processing. It supports the most languages of any similar app (English, Spanish, Portuguese, Polish, German, Italian, Russian, French and Thai – with more languages added regularly) and is the only app on the market which also lets you export audio snapshot data to the clipboard (for plotting in Excel, etc).