Every check in one place

Sounds hide messages in many ways, and puzzle makers mix them. The Audio analyzer runs all of CacheCrack's sound checks at once and lists anything interesting at the top.

It listens for touch-tone (DTMF) phone digits and beeped Morse code and turns them into text. It reads a message hidden in the quietest bit of each sample. It scans the file for anything tucked in after the sound ends, like a ZIP, and shows a spectrogram so you can see a picture, text or an SSTV transmission hidden in the sound.

Private and offline

Everything runs in your browser. Your sound file never leaves your device.