FrequenSee - Spectrum Analyzer is a free real-time spectrum analyzer (RTA) and audio visualizer available on the Android platform. Developed by TadaoYamaoka, this app allows users to see whatever their microphone can hear with a high level of responsiveness and smooth frequency movements.

The app features 176 high-quality frequency bands ranging from 20Hz to 22kHz, with a logarithmic frequency scale that matches human perception. The low latency of the app ensures high responsiveness, while the high frame rate enables smooth frequency and amplitude movements. Additionally, the native code of the app ensures low battery drain, making it highly efficient.

FrequenSee - Spectrum Analyzer also features fast graphics using OpenGL ES 2.0 and an FFT window size of 4096 @ 60 frames per second. With these features, users can test their audio equipment or visualize their voice and music in real-time.

Overall, FrequenSee - Spectrum Analyzer is an excellent choice for users looking for a high-quality real-time spectrum analyzer and audio visualizer on their Android devices.