Fold & Squish: Butterfly Paint for iPhone Duo

Fold & Squish is the folded-paper butterfly painting from school, with paint that behaves like the real thing: thick and wet, it spreads when you press it, mixes where colors touch and leaves fine veins as the page peels apart. You paint with a brush, splats, drips, a finger or a magic straw, fold again over the top to add layers, and start from faint pencil guides such as a butterfly, an owl or a flower, and every painting is taped up on a gallery wall. On iPad, Apple Pencil paints while your fingers smudge. It’s free with every tool, nine colors and room for six paintings; the one-time Sparkle Pack adds glitter, rainbow paint, every guide and unlimited paintings. There are no ads, accounts or tracking.

On the iPhone Duo, the phone is the paper. Paint one half of the open page, fold the phone shut and the painting folds with it, rub the cover to squish the paint, and unfold it to find the mirror print. On other iPhones and iPad, a Fold button folds the page for you. Fountain Interactive also made Tiny Computers.