Pianyu: A Book Outlives Every App

In 2003, an album site opened in China. By 2009 it held fifty-one billion photos from thirty-six million people. On May 24, 2019, it stopped its servers. The photos didn't burn. They just stopped being reachable.

In December 2024, another — 240 million accounts, seven billion images — went offline with an unclear "upgrade" notice. The top reply on its own user forum: "I meant to export them eventually."

This is not a Chinese story. Google+ told its users to download everything before April 2, 2019. Every platform that ever held your photos has exactly two endings, and only one of them is the rare one.

We didn't build Pianyu because the world needs another photo-book app. We built it because of what kept happening to the things people meant to organize someday:

Scattered. A life's pictures now live on two phones, a chat app's saved folder, an album site from 2011, and a drive in a drawer. Nobody chose this. The platforms changed; the photos followed.

Untouched. Everyone we know has "organize the photos" on a list. It stays there for years — not from laziness. Ten thousand files with no order is a project, and nobody finishes a project every evening.

Unfinished. And the people whose stories they are keeps turning eighty, then ninety. "Someday" has a deadline attached to it that nobody writes down.

So Pianyu is not built as a tool you use once. It's built as a habit with a shape:

• Fragments — a photo and thirty seconds of talking. No project, no structure. This is the whole entry cost.
• Stories — after a while, the algorithm notices what has formed: "these forty photos are one trip; this could be a book." You say yes or ignore it. It never decides what your life means — only what your own material has already become.
• A Lifetime — keep enough stories and one book assembles itself: chapters, decades, the workshop, the hometown, the immigration — told in the teller's own words.
• Once a year — you export what's new, and there's a real new book: this year's material, reviewed by you, arranged for keeping.

Two promises make this different from every platform above:

We keep it — you hold the export. Finished books wait in your Vault; the yearly cards wait in the library; family contributions accumulate in the circle. We hold all of it so nothing depends on your memory for maintenance. And the export is always yours — a PDF file, yours forever, on your drive, on your sibling's. We keep it; you keep a copy too. That's the system.

Arranged, never invented. The AI does the layout, the chapters, the order. It does not add a single fact, name, or date you didn't give it, and it will not "improve" the way your mother told her own story. A book someone else wrote with AI about your family is a different object than this one. (The exact boundary — what the AI touches and what it can't — is written down in our no-fabrication policy.)

The format is the oldest one that survived every technology change before it. Albums got thrown out, moved, lost. But albums got given — to a daughter, to a grandchild — and given things are the ones that exist in 2076.

Collect fragments. Shape stories. Gather a life. Gather once a year, and nothing scatters.

— Pianyu (片语成书), a family-memory company. Not a photo-book app.