Photocollage has a long history, as old as photography itself. The Victorians were fond of cutting up photographs for their family albums. In the early 20th century, Dadaists and Surrealists experimented with collage and montage to disrupt the authority of the photograph, for formal, political and psychological reasons that still feel urgent. Modern artists loved collage, and it remains a staple of contemporary art. Some photographic artists have returned to the materiality of the print and related ephemera, perhaps as a way to resist the increasingly digital and virtual nature of image culture. So, why make a digital tool that simulates an analogue experience?

Because starting is the hard part, and a screen removes the obstacles: no glue, no scalpel, no studio, no source material to track down, and nothing you make is ever final. The app is a playful and accessible way to begin constructing photocollages from scraps of visual information: scanned paper fragments, photos of photos, scribbles and paint daubs. It deliberately blurs the line between the digital and the analogue. You can begin with one of your own photos or scans, or construct a collage from the fragments provided. You can intervene directly in a photograph: split it, tear it, cut into it, punch a hole through it. You can layer, scale and reposition everything by hand. When you're done, you can export the result. You could even begin a new collage by importing one you've already made and disrupt it some more. You can browse the gallery for inspiration and submit your own work for display.

If you are overwhelmed by choice, try drawing a card from the Constraints pack. Sometimes less really is more. The app is a playground. It helps you to make, look, combine and adjust. If a composition feels wrong, make a change. If it feels right, trust your instinct. And if you print the result and take scissors to it, so much the better.