iPhone Duo apps / Chirpfold
Chirpfold
by 清珠 陈
FreeGames
A flappy-bird game where folding the Duo flaps the wings.
Get it free on the App StoreOn iPhone Duo

- Best in:
- Book
- Also works:
- Closed
- Open, landscape
Hold one half of the open Duo in each hand and fold it inward a little: Chirpfold, a round little bird, flaps its wings. A light fold is enough, so you can play with the phone half open, and outfits unlock as you play with real folds. On other iPhones, and on the closed Duo, a Fold button stands in for the hinge.
Free. View on the App Store
More apps built for the book pose
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