Given this review: "It is a very useful app" Would you recommend this app to a friend? Not at all, No, Maybe, Yes, or Definitely?
Definitely

Given this review: "Playback amplifier please! Compare with team speak 3 the audio playback  is much lower. PLEASE ADD PLAYBACK AMPLIFIER for noise environment ptt use . I will not longer rent a mumble server again if no changes." Would you recommend this app to a friend? Not at all, No, Maybe, Yes, or Definitely?
Yes

Given this review: "Nice" Would you recommend this app to a friend? Not at all, No, Maybe, Yes, or Definitely?

Definitely