Lifecake is a photo-sharing app that is targeted towards parents of young kids who want to chronicle and re-live memorable moments from their kids' upbringing.
The app allows parents to consolidate photos of their children from various sources into one simple and easy-to-use timeline. By scrolling through a stream of photos, parents can experience their child's growth progress in an enjoyable and simple way.
The London-based app has been so successful that photo giant Canon has acquired it, in a move that speaks to its desire to play a part in people's photographic experiences even if they're not using a Canon camera. Meanwhile, Lifecake is an example of how patterns of use of existing services can be leveraged to create entirely new products.