Yes — free to download and use.

Does it need an internet connection?

No. The only network access is the optional update check, which can be turned off in Settings.

Is there a Windows version?

Yes — released in V1.6.0, with the same features as macOS.

macOS 10.15 or later · .dmg · 137 MB · ZBrush 2026+ for Send to ZBrush

MD5: e8323282bef534a77fd149fc8b29da93

Windows 10 / 11 · .exe installer · ZBrush 2026+ for Send to ZBrush

Extraction code: 42by

Download the .dmg and drag SculptBox into your Applications folder.
If macOS refuses to open it, run the command below (see the next section).
Launch SculptBox → Settings → Plugin Status → Install to set up Sculpt Bridge, then restart ZBrush.

This is not a broken download — the app simply is not code-signed yet. Fix it with one command:

sudo xattr -rd com.apple.quarantine /Applications/SculptBox.app

Or open System Settings → Privacy & Security and click Open Anyway.

macOS	macOS 10.15 or later
ZBrush	ZBrush 2026 or later — only needed for the Send to ZBrush feature; browsing works without ZBrush
Network	No internet connection required. The only network access is the optional update check, which you can turn off in Settings.

After downloading, you can confirm the file is intact:

md5 SculptBox-1.6.0.dmg
# e8323282bef534a77fd149fc8b29da93