WildSpectra Mobile is an adaptation of my desktop application by the same name, WildSpectra (a collaborative effort with Dr. R. Haven Wiley), to the Android operating system. It provides real-time scrolling audio spectrograms (sonograms) on handheld computing devices. It also provides waveform and spectrum views, as well as a level meter. It supports both linear frequency scaling and logarithmic frequency scaling (aka octave-band analysis). Spectra can be presented as amplitude, power, or dB with a choice of color palette.