The difference between paid and free wallpapers for the iPhone is only the design of the wallpaper. Creators of iPhone wallpapers may charge a fee for more popular and desired wallpapers while also providing a selection of free wallpapers so that they can make money.
According to WonderHowTo, the top five free wallpaper apps for iPhone are Blurred Wallpapers, Everpix, Crystals, InterfaceLIFT and Doodle Dandy, which deliver the quality of paid wallpaper apps without the price.
The Blurred Wallpapers app lets users select a color or import their own image and add a blur effect or pattern over it.
Exerpix has a selection of high quality images that can be saved and added as wallpaper. On Everpix, you can search through categories such as abstract, minimalist and nature.
With DoodleDandy you can create your own designs using the app's creative drawing tool. Just tap to create circular patterns in your desired color and shape.
IEE news cites Pimp Your Screen and Wallpapers HD as the best paid wallpaper apps for iPhone.
Pimp Your Screen cost about $3 in the App Store as of 2015. Diverse designs are arranged in categories such as Cartoon, Sci-Fi, Animals, Sports and more. Pimp Your Screen also allows the addition of customized text.