Spectrum Analyze gives you real-time spectrum data from the microphone on your Android device. Features in Free Version * No Ads * 44100 Hz sampling rate * Max frequencies up to 22050 Hz (1/2 sampling rate) * 8192 samples per spectrum * ~5.4 Hz Resolution per point * Peak Detect of whole spectrum and your local window * Pinch to Zoom * Tap to Pause * Max Hold * Take Screenshot * Share on Facebook, Gmail and many more Features in Premium Version. * Limited time 99 cent app! Will increase price as more features are added. * Help out the developer to keep adding more features! * Beta Log Frequency Scale * Adjustable sample rate from 8000 Hz to 48000 Hz * Max frequencies up to 24000 Hz (1/2 sampling rate) * Adjustable Size of FFT up to 100000 samples * Not limited on Power of 2 sized FFTs (Must be even though) * Autoscale * Adjustable Manual Scale If you purchase the app and don't like it contact me for a refund. Contact on Reddit: Raspberrywood