Strata: Shared Photo Albums

Strata collects everyone's photos from a group event into one shared album. After a trip, wedding or festival, instead of photos scattering across a dozen camera rolls and chats, each guest adds their shots and videos, and Strata arranges them into an interactive 3D memory you can move through from different angles.

It only works if the group joins, so its value grows with how many friends actually upload. For people who organise trips and events and are tired of begging everyone to share their pictures afterwards, it gives the memories one home.