Download · macOS

Pier for macOS

Signed, notarized by Apple, universal binary (Apple Silicon + Intel). Requires macOS 13 Ventura or later. The download is free — running it requires a license key.

Pier 1.0.0

~130 MB · DMG · arm64 + x86_64 · macOS 13+

Download DMG →

SHA-256: (computed at build time — see /download/Pier-1.0.0.sha256)

Why does my Mac want to check this?

Pier is signed with an Apple Developer ID (Bernardus Molkenboer, 544AYX5MD4) and notarized by Apple on every release. When you double-click the DMG and drag Pier into /Applications, macOS verifies the Apple notarization ticket attached to the bundle — that handshake is the "checking with Apple" message you might see on first launch. It takes a second, then Pier opens normally.

You can verify the signature yourself from Terminal:

spctl -a -vvv /Applications/Pier.app
# accepted — source=Notarized Developer ID

System requirements

macOS 13 Ventura or later
Apple Silicon (M1/M2/M3/M4) or Intel x86_64 — universal binary, runs natively on both
~150 MB disk space
Internet connection for AI chat (keys available via Settings → AI — plug in your Anthropic/OpenAI/Claude Max subscription)

Install in 30 seconds

Double-click the DMG when it finishes downloading.
Drag Pier.app onto the Applications folder alias.
Open Launchpad, click Pier. First launch, macOS verifies the notarization — ~2 seconds.
Paste your license key from the email we sent after your purchase. Done.

Don't have a license yet? Buy Pier — €199 one-time.

Something off?

"Pier is damaged and can't be opened" or "unidentified developer"

That usually means the DMG download was interrupted or your browser stripped the quarantine attribute. Re-download from this page — the link above serves the freshly signed build. If it still happens, open Terminal and run xattr -dr com.apple.quarantine /Applications/Pier.app then launch again. As a last resort, email info@abn.company.

Activation says "server unreachable" or "seat limit"

Pier talks to pier.abn.company/api to register your Mac against your license. A firewall or VPN blocking that host is the usual cause. Seat limit: your license is good for 2 Macs — deactivate one from Settings → License on another Mac, or write to us and we'll sort it.

I'm on macOS 12 Monterey or older

We need macOS 13 for the WKWebView features Pier uses. If you're stuck on 12 and updating isn't an option, email us — we'll refund or hold your license for when you upgrade.