Because Picture Collage Maker Pro ($39.90) goes far beyond those free apps with a wealth of templates, ... You can change the background and add frames, clipart, or shapes.

That is built into Windows. You can just tell it the folder to use for wallpaper and how often to change it. It's not a 'collage' like multiple images at once, you can have it sort of stretch them ...

We’re on the ground here at the 6th Annual World Maker Faire in Queens, New York. This year the Faire is even bigger, extending out from the New York Hall of Science towards Flushing Meadows … ...

You can also select background colors, frames, text, and stickers. Your finished collage can be shared with the various social networks, emailed, or saved to your camera roll.

Because Picture Collage Maker Pro ($39.90) goes far beyond those free apps with a wealth of templates, ... You can change the background and add frames, clipart, or shapes.