Install and open the first time

Apple has not notarised Shutterfold yet. So the first time you open it, macOS stops it and asks you to check. You do the steps below once.

What you need

A Mac with Apple silicon, such as M1 or later. To check, open the Apple menu and choose About This Mac. Intel Macs come later.
macOS 13 or later.
No account and no card. The scan is free.

Install

Download Shutterfold.dmg from the download page.
Open Shutterfold.dmg and drag Shutterfold to Applications.

Open it the first time

Open Shutterfold from Applications. macOS says it cannot check the app. Close the message.
Open System Settings, then Privacy & Security. Scroll down and click Open Anyway next to Shutterfold.
Click Open Anyway again and enter your Mac password.

After this, Shutterfold opens like any other app.

If you do not see Open Anyway, open Shutterfold again, then look again. macOS shows the button for about an hour after it stops an app.

What you see

The Shutterfold window when it opens. Apple Photos is in Your sources. Found on this Mac lists the home folder (MacBook), iCloud Drive, Google Drive, OneDrive, Dropbox and a drive. The main button says Scan for free. — Example. Shutterfold the first time it opens, on a Mac with an example library.

Example. Shutterfold the first time it opens, on a Mac with an example library.

Shutterfold adds your Photos library on its own. Under Found on this Mac, it lists the other places it found: your home folder, your cloud folders and any connected drive. Click one to add it. Then click Scan for free.

To read the Photos library, Shutterfold needs Full Disk Access. See Full Disk Access and the Photos library.