1.무음따-무료음악다운
https://play.google.com/store/apps/details?id=my.app.free.musicloader
2.skyscanner-최저가 항공편 검색
https://play.google.com/store/apps/details?id=net.skyscanner.android.main
3.에버노트-다이어리(갑인듯..개인적으로)
https://play.google.com/store/apps/details?id=com.evernote
4.서울버스-국민어플
https://play.google.com/store/apps/details?id=com.astroframe.seoulbus
