Well, you learn something new every day 😀, better refine my answer!
£2.39 is actually quite a lot for the Shazam app, considering it's used once in a while, luckily I still have my unlimited free version lol. OP go for Midomi, if cost is a factor, they both do the same thing (not sure why Shazam now costs if no new features 🙁 )