Simply, the greatest!

1- can record in background, sleep mode, amd even while playing games!
2- records directly to mp3 with adjustable settings.
3- cloud services support.
4- Nice UI
5- No lame restrictions whatsoever.
6- The free version is not hollowed.
Its free! I will definitely buy the premium app in the future.

Wess-sayed about RecorderHQ -Recorder for cloud