Fact sheet

Developer
Fountain Interactive Ltd, London, UK
Release date
22 October 2026
Platforms
iPhone, iPad and iPhone Duo (iOS 18 or later)
Price
Free, with one optional in-app purchase (the Sparkle Pack). No ads, subscriptions or tracking.
Age rating
4+
Languages
30 languages
App Store
apps.apple.com/app/id6822789179
Website
fountaininteractive.com/FoldAndSquish
Trailer
youtu.be/OpPjzbRqBv0
Press contact
foldandsquish@fountaininteractive.com

About Fold & Squish

Fold & Squish is the folded paper painting you probably did at school, rebuilt so the paint feels real. Paint on one half of the page, fold it shut, rub it, then peel it open. The paint has squished into a mirror image, and no two prints come out the same.

The paint is thick and wet. It spreads when you press on it, colors mix where they touch, and the paper leaves fine veins in it as it peels apart. Kids love it, and grown-ups find it oddly calming.

On iPhone Duo, your phone is the paper. Paint on the open screen, then close the phone for real and the painting folds shut with it. Rub the outside screen to squish the paint, open the phone again, and there's your print. On any other iPhone or iPad, the Fold button folds the page.

Features

  • Real-feeling wet paint, simulated on the GPU: it spreads, mixes and peels apart with paper veins
  • On iPhone Duo, close the real phone to fold the painting and rub the outside screen to squish it
  • A brush, big splats, drippy drops, finger smudging and a magic straw that blows paint into wiggly shapes
  • Fold again over the top to add another layer
  • Faint pencil guides to start from, like a butterfly, an owl, a flower or a ladybug
  • Apple Pencil on iPad: the pencil paints and fingers smudge, with pressure, tilt and hover
  • Paintings save as you go and get taped up on a gallery wall
  • No ads, no accounts, no tracking; buying and sharing sit behind a grown-ups check

Ten years from INKS. to wet paint

Ten years ago Dan Fountain was the game designer and technical artist behind the fluid-dynamics ink in INKS., State of Play's pinball game, which won a 2016 Apple Design Award. Phones have caught up with what that ink was only hinting at.

Fold & Squish rebuilds the idea as the butterfly painting every child makes at school: thick, wet paint that squishes, mixes and peels apart, running as a Metal compute simulation on today's Apple GPUs. Its toughest tester was Dan's four-year-old.

How the paint works ↗

Images

Click a picture for the full-size file. Free to use in coverage of the app.

iPhone Duo renders

iPhone Duo: paint one side
iPhone Duo: paint one side2600 × 1900 · 5 MB · Download
iPhone Duo closed: rub the outside screen to squish
iPhone Duo closed: rub the outside screen to squish2600 × 1900 · 3 MB · Download
iPhone Duo opened: the butterfly print
iPhone Duo opened: the butterfly print2600 × 1900 · 5 MB · Download
Glitter and rainbow paint
Glitter and rainbow paint2600 × 1900 · 5 MB · Download
The gallery wall
The gallery wall2600 × 1900 · 5 MB · Download

iPhone Duo screenshots

Painting one half of the page
Painting one half of the page2853 × 2007 · 918 KB · Download
The print, peeled open
The print, peeled open2853 × 2007 · 979 KB · Download
Gold glitter, star glitter and rainbow paint
Gold glitter, star glitter and rainbow paint2853 × 2007 · 1 MB · Download
Paint blown about with the magic straw
Paint blown about with the magic straw2853 × 2007 · 856 KB · Download
Painting over a pencil guide
Painting over a pencil guide2853 × 2007 · 971 KB · Download
Every painting taped up on the wall
Every painting taped up on the wall2853 × 2007 · 746 KB · Download

iPad screenshots

Painting with Apple Pencil
Painting with Apple Pencil2752 × 2064 · 1 MB · Download
A butterfly print on iPad
A butterfly print on iPad2752 × 2064 · 1 MB · Download
Choosing a pencil guide
Choosing a pencil guide2752 × 2064 · 602 KB · Download

iPhone screenshots

Smudging the paint with a finger
Smudging the paint with a finger2622 × 1206 · 449 KB · Download
A butterfly print on iPhone
A butterfly print on iPhone2622 × 1206 · 529 KB · Download

Key art

Key art: Paint. Fold. Squish!
Key art: Paint. Fold. Squish!1280 × 720 · 171 KB · Download
How it works on iPhone Duo
How it works on iPhone Duo1000 × 650 · 132 KB · Download

Icon and logo

App icon (1024 x 1024)
App icon (1024 x 1024)1024 × 1024 · 2 MB · Download
Butterfly logo (transparent)
Butterfly logo (transparent)720 × 605 · 580 KB · Download

Video

Watch the trailer on YouTube ↗ · App preview, iPhone Duo (30 s, 1920 x 886) · 39 MB ↓

Press release

Fold & Squish brings the school butterfly painting to iPhone, iPad and iPhone Duo

On iPhone Duo the phone is the paper: close it to fold the painting, rub the outside screen to squish it, and open it to see the print.

Fountain Interactive today released Fold & Squish, a painting toy for iPhone, iPad and iPhone Duo. Paint on one half of the page, fold it shut, give it a squish and peel it open: the paint has squished into a mirror print, and no two come out the same.

The paint is a real-time simulation. It is thick and wet, spreads when you press on it, mixes where colors touch and leaves fine paper veins as the page peels apart. It comes from Dan Fountain, the game designer and technical artist behind the fluid ink in State of Play's INKS., which won a 2016 Apple Design Award.

On the new iPhone Duo, folding is physical. Close the phone and the painting folds shut with it; rub the outside screen to squish the paint; open the phone again to find the print. On other iPhones and on iPad, a Fold button does the same job, and on iPad Apple Pencil paints while fingers smudge.

Fold & Squish is made for children and grown-ups alike. It has no ads, accounts or tracking, and collects no data. Buying and sharing sit behind a grown-ups check.

Availability. Fold & Squish is available now on the App Store as a free download (https://apps.apple.com/app/id6822789179). The free version has every tool and keeps six paintings; the optional Sparkle Pack is a one-time purchase that adds gold glitter, star glitter, rainbow paint, every pencil guide and room for as many paintings as you like.

About Fountain Interactive

Fountain Interactive is an independent interactive studio in London, founded by Dan Fountain. Dan has spent more than ten years making tactile, playful software. He was the game designer and technical artist behind the fluid ink in State of Play's INKS., winner of a 2016 Apple Design Award, and has worked on the Apple Design Award-winning Blackbox for AVP and the BAFTA-winning Lumino City. Fountain Interactive's first two apps, Fold & Squish and Tiny Computers, launched alongside iPhone Duo in October 2026.

Press enquiries: foldandsquish@fountaininteractive.com