SnapDays uses macOS's Screen Recording permission to capture your screen. macOS asks for it on your first capture. If you declined it or captures come out black:
On macOS 26, granting Screen Recording does not take effect in a running app. macOS offers to Quit & Reopen when you switch it on — if you chose Later, SnapDays keeps waiting until you reopen it yourself.
SnapDays detects this and offers a Reopen SnapDays button. Use it, or quit the app and open it again. The same applies to the Accessibility permission below.
Page capture scrolls the target window for you, and that scrolling needs the Accessibility permission. Without it, nothing scrolls, so SnapDays reaches what looks like the end of the page after a single screen.
If SnapDays is already listed and switched on but page capture still stops after one screen, the entry can be stale: select SnapDays, remove it with −, add it again, then reopen the app.
SnapDays requires macOS 26 (Tahoe) or later. It cannot run on earlier versions. You can check your version from menu → About This Mac.
Pro is a one-time purchase tied to your Apple Account. On a new Mac or after reinstalling, open SnapDays → Settings → Pro tab and click Restore Purchase. Make sure you are signed in to the App Store with the same Apple Account you used to buy Pro.
When you first launch SnapDays, you choose a root folder (default: "SnapDays" in your home folder). Every capture is saved there automatically with a sequential number — no save dialog. Folder tabs in the gallery map to subfolders inside the root, so you can also browse everything directly in Finder.
Yes, from SnapDays 1.1. When more than one display is connected, each display keeps its own selection rectangle — position and size are remembered separately, so you no longer have to drag a single rectangle from one screen to another. The selection history and Reset Selection also apply to the display your cursor is on.
Known limitation: SnapDays tells displays apart by their vendor, model, serial number and resolution. Some displays do not report a serial number, so if you connect two identical models running at the same resolution, SnapDays may not be able to distinguish them — those two displays will then share a single selection rectangle and history. Displays of different models or resolutions are always identified correctly.
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SnapDays is built by a single independent developer, so replies may take a few days. Thank you for your patience.