That's because that's not how Shazam's recognition works (unless they have a secondary mechanism). Shazam is very sensitive to time and frequency features of sp

That's because that's not how Shazam's recognition works (unless they have a secondary mechanism). Shazam is very sensitive to time and frequency features of specific recordings, which is also what makes it so robust in noisy environments. Having both apps is handy for their relative strengths.