The Song Key Finder app is a simple app that can help you identify the key of a song via several methods. All methods used are relatively accurate and use your device's microphone. It can help you identify the key by analyzing the sound it creates.

The results can then be saved for later to be referred to if required. If the song changes key part way through, the user can enter the chords to analyze the part of the song they want. This method is very accurate and takes the time to analyze the audio signal.