Volume Amplifier is a Cydia tweaks, you can increase your iPhone’s volume up to 200% with it. It is useful when you are listening to music in crowd or talking to someone whose voice is not audible.
This jailbreak tweak recently updated for iOS 8. Volume Amplifier works fine with speaker, earpiece and headphone. It controls the audio stream directly and does not mess up with the system configuration files.
Volume Amplifier has no complex configuration or set up to worry about. It simply works via the + / – volume button. Keep pressing the ‘+’ button even after the volume reaches to 100 percent. You will see a secondary volume bar is showing up on top of the original volume indicator.
This tweak works fine with other VOIP apps like Viber, Skype as well as any other music apps. Volume Amplifier works with iPhone 6 plus, 6, 5c, 5s, 5. But it only works with the external speaker on iPhone 4s.
Though Volume Amplifier is a great tool but it has a drawback. If you increase the volume frequently or keep the volume up to high level for a long time it will affect the speaker. Volume Amplifier is available for $1.99 on Cydia.