A. To reduce battery drain, try closing the app when not in use. Double-tap the home button (or swipe up from the bottom on newer iPhones) to view open apps, then swipe up on MUBR to close it.

B. Check the app's settings for any options to reduce battery usage, such as disabling background playback or reducing the quality of streaming. Also, consider enabling Low Power Mode in Settings > Battery to help conserve battery life.