Halloween projection mapping app: map your house from an iPhone

Halloween projection mapping app EasyMapper Studio puts ghosts, silhouettes and lightning onto your windows, front door and garage — all from an iPhone or iPad, with no laptop balanced on a windowsill. Drag each layer's corners onto the real edges of the surface, drop a loop on it, and the house is haunted.

The latest update adds a set of Halloween loops built into the app, so you can go from installing to projecting spooky content the same evening — no hunting for downloads before the first test.

1. Connect the phone to the projector. A USB-C or Lightning HDMI adapter, or AirPlay if the projector supports it. Our connection guide covers every combination.
2. Add a layer per surface. One for each window, one for the door, one for the garage. Drag the corners until the light hugs the real edges — that precision is what makes it read as haunted rather than "a projector pointed at a house."
3. Fill each layer and press play. Use the built-in Halloween loops, your own videos, or live shaders. Save the map once and reuse it every October — and for Christmas.

A projector (3,000+ lumens is comfortable for a full facade; far less for one window — see how to pick a projector), the adapter, and somewhere dry to put it: behind a front window, a covered porch, or the garage aiming out.

• No laptop outdoors. The whole show runs from the phone in your hand.
• You stand at the surface while you align it, instead of running back and forth to a desk.
• Curved and complex surfaces are supported, so pumpkins, columns and inflatables can be mapped too.
• One map, every holiday. The geometry never changes; only the content does.

Free to download; the Premium subscription ($7.99/month or $39.99/year, with a trial) unlocks everything. Compare that with a desktop mapping license plus the laptop to run it on.

For the full walkthrough — surface-by-surface ideas, timing, and the mistakes to avoid on the night — read the Halloween projection mapping guide.