Jack-o-Lantern
Carve one, set it on the table, and let it watch.
For iPad and iPhone · iPadOS / iOS 17 or later
Prop your iPad on a table by the candy bowl. The front camera finds the people in front of it, and the pumpkin's eyes follow them — a dart of the eyes, a startled little “ooh,” then a steady gaze that tracks them wherever they go. With nobody there, it drifts and hunts, as though looking for someone.
Eye size, height and slant. The nose, the mouth, the teeth. How tall or squat the gourd is, how deeply ribbed the shell. The colour of the skin and the colour of the fire inside. Name it, save it, keep a whole patch.
Ready-carved pumpkins if you would rather not start from nothing. Copy any of them and rework it into something of your own; the originals stay as they are.
Tap its eyes and it blinks. Tap its nose and it flinches. Tap its mouth and it gapes. Flick it sideways and the whole gourd swings round — keep flicking and it goes cross-eyed and dizzy.
Want to see the tracking work indoors, with the camera off entirely? Drag anywhere and the eyes follow your fingertip.
Frame rate and detail step down through the quiet stretches and come straight back the moment someone arrives, so an unattended iPad stays cool and does not drain.
No video loop, no photographs. The pumpkin is drawn mathematically every frame on the GPU, which is why it stays razor sharp at any size and why the candle genuinely flickers instead of replaying.
All five are rendered by the app itself — these are not drawings.





Pick a pumpkin, carve a new one, run the display, or try it with your finger. Settings for the gaze, the mood and the battery are a couple of taps away — and while the pumpkin is on screen, a two-finger double-tap opens them without disturbing the show.
This is a camera pointed at other people's children. It is worth being exact.
One honest caveat: person detection needs some light. The pumpkin's own glow helps more than you would expect, but a pitch-dark porch is hard.