A sky to open on, and a poster worth sharing. • The app opens on the sky: hold your phone up and the ring names what is in the middle. Tonight's plan is a card you pull up. • Three tabs: Sky, Explore and You. Explore is one map of everything; You is your people and your nights. • The stars come out as the sky opens, and the name of what you centre writes itself in gold. Hold still, and only the sky stays. • Search the whole sky from the ⋯ menu. • Keep this sky: one story poster with your name, one fact and where to find the app, ready for Instagram. Leave your name off if you like. • Planes overhead, bright satellites and stars with known planets, with Live weather & satellites on. • Night photo: prop the phone, press once, and forty exposures become one clean picture of the stars. • Fixes across the app.