If you like to give your iPhoneography a just a bit of a boost, without creating much of a post-processed look, here are some Hipstamatic lenses that can give you those results.
Top left: unprocessed iPhone camera shot Top right: Jane. Adds a little contrast. Second row left: Loftus. Vivid colours, soft lighting and hazy edges. Second row right: Americana. Blue colour cast. Blur at edges or corners.
Top left: Melodie. Boosts contrast, background and warm colours. Top right: Foxy. Increased contrast, softened photo, adds warmth - yellow and red. Bottom row left: Wonder. Desaturated, high contrast magazine inspired lens that tones down warm colours. Bottom row right: Adler. Softened, brightened washed out look.