I know they've had a five song limit since the iPhone 4 came out. I had the original version, which had unlimited tagging, but when I upgraded to the iPhone 4, I had to re-download the same Shazam app I had installed on my 3G. The same version, the one they said would have unlimited tagging, implemented the 5 song restriction.
There was an outcry from iPhone 3g/3gs users who were forced to upgrade and hit with this limit right around the iPhone 4 launch.
I havent upgraded at all in years (I think that the little icon next to the app store has a forty in it) so I dont understand the limit. Is it five free tags overall or five a month/day etc? I have at least fifty on mine and I tag things almost weekly.
There was an outcry from iPhone 3g/3gs users who were forced to upgrade and hit with this limit right around the iPhone 4 launch.