Battery Widget Reborn Pro
If there's one common thread among smartphone users, it's the need to occasionally check up on a device's battery level. Battery Widget Reborn Pro makes it easy: The widget shows a large circle with your current battery status, complete with a colored outer ring to serve as a visual gauge.
Battery Widget Reborn Pro has tons of options for customization. With a single tap, it'll even pull up detailed stats about your daily usage.
The app is available for $1.99; a free time-limited beta is also available if you'd like to try before you buy.