- Walli (Free) - Walli is a free wallpaper app that lets artists share photographs and artwork that can be used as your iPhone or iPad background. Walli has content organized into categories, plus there's a search tool and options for viewing recent, popular, and featured content. Walli offers all free content and displays ads in the app.
- Unsplash (Free) - Unsplash is a community-based image sharing app that provides royalty-free photographs for you to use as wallpaper or for other purposes. It's not focused solely on wallpapers, but there's an interesting range of content and a huge number different options. There are featured categories along with a robust search tool for finding just what you're looking for. Along with an iOS app, Unsplash also has a website so you can get Mac wallpapers too.
- Vellum Wallpapers (Free) - Vellum is an app that aggregates wallpapers from a variety of sources, so it offers a good range of different wallpaper options. Some of the content overlaps with the other wallpaper apps we've mentioned, but it also has unique wallpapers you won't find elsewhere. It has a nifty blurring tool for cutting out details on a wallpaper you might want to use as a background for the Home screen, so app names and icons won't be hard to see. It's free, but you can remove ads for $1.99.
- Atlas Wallpaper (Free) - Atlas is a unique wallpaper app that's designed to let you create a wallpaper based on a map anywhere in the world. You can search for a specific location, see a general overview map, and then customize the color palette to create unique wallpaper maps.
Do you have favorite wallpaper app or resource that we didn't mention? Let us know in the comments.