Impulse brings brings a new level of control to music playback on jailbroken iOS devices. Once installed, a custom set of gestures can be used to control music while the display is off. This means music can be controlled without unlocking the device, or even pressing the wake button at all.
A simple tap on the dark device screen readies Impulse for further input. Gestures can then be used to play, pause, switch tracks, and change volume with the display off. The tweak is compatible with any app that uses built-in iOS music controls.
When it comes to battery management, Impulse is set up to allow a customizable idle threshold in the settings. This threshold determines for how long Impulse will wait for a command after music is paused or stopped. Settings -> Impulse includes a kill switch and additional toggles that are described directly in the settings panel.
Impulse is available from the BigBoss repo on Cydia for $1.99. Jailbreak iOS 7.1.x with Pangu to start customizing iOS. Check here for instructions on how to jailbreak iOS 7.0.x with evasi0n 7. You can also find out how to purchase and install Cydia tweaks with this guide.