Hangul - Alphabet of Korean

this is a really good app, just for the first five minutes, I’ve learned 6 new words in just five minutes, it is usefull but then, the app want like 60 euros for one year, suddenly, I’m not shure to give this app my money, I’ve tried just fore a bit of minutes and I din’t konw if it really works, I’m giving four stars, if you will put some ads for people who don’t want ti spend any money, the app will be perfect