Most definitely anyone who has intent on using particular Korean phrases for certain occasions will find this app totally worth the buck. I got it in version 1.1 for free but definitively would’ve spent the dollar for it. I possible con for some is that there isn’t any romanization of the Korean. So unless you can read 한글(Korean) like me, you’ll have to use the speaker for guidance. Another con would be that you cannot slow down the speaker—generally spoken fast. Regardless, this makes a great supplementary and situation dependant app.
If you are interested in learning Korean, I would recommend the Byki Korean. This is another supplementary learning tool that uses virtual flash cards to in an intuitive way to help you memorize vocabulary.
Jimmi G about Lingopal Korean - talking phrasebook