iPhone Apps for Otaku – Ladiopa

5Meanwhile, if you’re adept in the Japanese language and you like J-Pop, you can actually listen to Japanese radio stations through your iPhone with the Ladiopa app! You can choose your favorite broadcasting registrations, you can also play audio in MP3, AAC and AAC+ formats and it has a wide air list.

However, if you want to hear this app in the background, you’d have to sell used iPhone because that feature only works on iOS 4 and above.