Fold Toys: Spooky iPhone Duo App - Unfold your iPhone Duo to see some magic
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This app turns your iPhone Duo's hinge into a box of Halloween tricks. Each toy spans both screens. Closed, it waits on the outside. Open it, and it comes alive inside, following exactly how far and how fast you unfold. Every toy has its own sounds and haptics tuned to the hinge, so the faster you open, the louder it gets.

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Hey, I made Fold Toys with my 8 year old daughter. A lot of them are her ideas.
I got an iPhone Duo and she kept opening and closing it for no reason, so we built toys you play by unfolding it. There are four Halloween ones: a T. rex, a coffin, a haunted spoon, and a cursed pearl. Open your phone and something opens back. 🎃 And a few other fun ones.
It's $2.99, with no ads and no subscription. Tell us which toys we should make next!
If you have an iPhone Duo, this is a fun one to install.