The Status Bar of every iPhone and iPad is home to a battery level indicator that keeps the user aware of when they’re going to need a charge. Unfortunately, the indicator tends to be somewhat bland and there doesn’t seem to be any indication that Apple will change that any time soon.
Enter BattiBar, a newly released and free jailbreak tweak by iOS developer HallieHax that offers a solution to the aforementioned quandary. More specifically, it colorizes the entire Status Bar with a transitional gradient color that transforms slowly over time as your handset’s battery discharges with use.