Another favorite is Shoot ($2), whose refined interface provides plenty of control without bogging you down with too many settings. It isn't quite as minimal as Manual, but it does a fine job of striking a balance between simple and complex, with sliders, grids, and meters all working in unison to help you quickly nab a perfect shot.
The second runner-up for best overall camera (finishing just a hair behind VSCO) was ProCamera 8 ($5), a full-featured manual camera with a nice interface and a slew of manual controls. A cool feature called Exposure Swipe Control lets you regulate brightness just by moving your finger around the screen, and a series of advanced shooting modes cuts down on the amount of adjustments you'll need to make. And if you're a fiddler, ProCamera gives you settings aplenty.
Instagram junkies will appreciate EyeEm's (free) filter-focused camera, which features 24 adjustable screens, textures, and patterns to give your photos a unique look. And its camera isn't too shabby either, with a minimal interface that gives you about as much control over your picture taking as Apple does.
Colors ($1) offers more than 1000 filters that can easily be applied to your photos. You won't find too many unique ones--true to its name, most of them are simple shades of color--but for a buck it's worth keeping around just for the sheer volume of options it provides.
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