Unfold Your City
Pop-up books of great cities
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Open your phone and a city rises out of the page. Barcelona, London, New York and Seoul are on the shelf, and new cities are on their way.
A shelf of pop-up books, one for each of the world's great cities.
Open a book and the city rises out of the page: towers stand up, bridges reach across the river, palace roofs lift into the sky, folded the way real paper pop-ups fold. Lie it flat and the day turns to dusk, the windows light up one by one, a music box plays, and the city comes alive: Big Ben chimes, Tower Bridge lifts for a tall ship, lanterns glow in Seoul, the sun sets behind Barcelona.
MADE FOR IPHONE DUO
On iPhone Duo, the phone is the book. Closed, its outer screen shows the cover. Unfold the phone and the book opens with it: slowly, and every card stands up exactly as paper would; snap it open, and the whole city springs up. On any other iPhone, a hinge at the bottom of the screen opens the book.
FOUR CITIES TO START
• Barcelona: the Sagrada Família, Casa Batlló and Park Güell. Free.
• London: Westminster and Big Ben, Tower Bridge, Buckingham Palace.
• New York: the Manhattan skyline, the Statue of Liberty, Central Park.
• Seoul: Gwanghwamun, N Seoul Tower, the old roofs of Bukchon.
Every book is printed in the style of an old atlas: cream paper, gold-foil covers, map pages with compass roses, and a little paper plane that travels with you from city to city.
TURN THE PAGES
Drag a page to turn it, or tap its edge. Rock the book and the city answers: boats rock, lanterns sway, the plane swings wider.
ONE CITY AT A TIME, OR EVERY CITY
Barcelona is free. Each other city is a one-time purchase. Or get Every City: every book on the shelf, and every city we add, forever.
No ads. No account. No tracking.
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The developer, Pietro Messineo (CZ), indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
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Information
- Seller
- Pietro Messineo
- Size
- 6.8 MB
- Category
- Books
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Sydney $0.99
- Paris $0.99
- Every City $4.99
- Seoul $0.99
- New York $0.99
- London $0.99
- Copyright
- © 2026 Pietro Messineo