SpecScope Spectrum Analyzer 2 is a free Android application developed by NFX Development that provides a fast and accurate representation of your surroundings using FFT technology. It is a powerful tool that can be used in various audio and engineering situations to attain a power vs frequency plot.

The application comes with advanced and simple touch gestures to scale the viewable area of the graph, allowing users to analyze the frequency spectrum with ease. It also allows you to save and recall previous signals from file, making it convenient to compare different signals.

The application provides users with the option to choose between logarithmic or linear frequency scales and selectable number of bins for accuracy versus speed. It also has a controllable averaging algorithm for response smoothing, peak hold signal with a controllable timeout, and hold off signal, which only triggers when the previous maximum has been surpassed.

Moreover, the tap to pause and resume measurements feature, which allows users to navigate the graph even in pause mode, is a great addition. It also has optional measurement markers for ease of reading.