Four corners. That’s the whole manual.

1. 1

   Connect a projector

   Use a USB-C or Lightning to HDMI adapter, or AirPlay screen mirroring. Bengala finds the projector by itself. On Home, tap the projector status at the top, then Show test pattern. A grid appears on the wall, so you can check the picture before you build anything.

2. 2

   Add a shape and drag its corners

   Start with a polygon, a circle or a stencil. Drag each corner onto the real thing: a door, a window, a pumpkin, a box. The picture bends to fit, so a flat video sits straight on a crooked wall.

3. 3

   Fill it with something that moves

   Pick an effect, or use your own photo, video or color. Each shape can show something different, or they can all share one. Effects download once and stay on your phone.

• Halloween
• Fire & Nature
• Neon
• Party

Frames from effects in the library.

• Animals

  Animals that run, fly or prowl across a house front or a fence.

• Illusions

  Made for doors, windows and walls. A door that opens, a wall that cracks.

• Party

  Disco balls, lasers and confetti for a birthday wall, plus spinning objects for a box or a cabinet.

• Fire & Nature

  Flames, embers, water and sky. A fireplace on a brick wall, clouds slow enough to leave on all evening.

• Space

  Stars, planets and slow clouds of color.

• Neon

  Glowing lines, grids and wireframes on black. Scanlines and a little old TV static.

• Abstract

  Light tunnels, ink and lava that never settle, patterns that bend and breathe. Some of these move fast.

• Halloween

  Eyes in the hedge, glowing pumpkin faces, things at the window. It leads the app from mid September to early November.

• Christmas

  Frost on the glass, icicles, warm lights for a house front. It leads the app from mid November to early January.

Pro comes as a weekly plan, a yearly plan with a 3-day free trial, or a one-time lifetime purchase.

The app shows each price in your own currency before you buy. Cancel anytime in your iPhone settings.

• How to project on a window for Halloween Put a projector inside, hang something translucent on the glass, and turn on mirror output. What you need and how to set it up in an evening.
• Halloween house projection ideas (cheap projector) Eyes in the hedge, something at the door, a face on the pumpkin. Eight ideas for the outside of your house, with the brightness each one needs.
• Projection mapping at home: a beginner’s guide What projection mapping is, what you need to start, and how to map your first object with a phone and a cheap projector.
• AirPlay vs HDMI for projectors: which one to use Wired HDMI or wireless AirPlay from an iPhone or iPad to a projector. Lag, picture quality, adapters and when each one makes sense.

All guides