Ship Your Mac App
in Style.
The all-in-one tool to sign, notarize, and package your macOS applications. Stop fighting with command-line tools—build beautiful, notarized DMGs in seconds.
7-Day Free Trial • Visual Editor • Hardened Runtime Support
Your Distribution Workflow, on Autopilot
Gravity DMG is the ultimate tool for macOS developers to package, sign, notarize, and distribute their applications.
Visual DMG Editor
Drag & drop simplicity with a built-in library of space-themed backgrounds. What you see is exactly what your users get.
One-Click Notarization
Forget command-line tools. We handle the entire notarization process with Apple's modern `notarytool` API.
Secure Signing
Automatically signs your .app bundle, enables Hardened Runtime, and preserves entitlements—all in one pass.
Keychain Integration
Your credentials never touch a text file. We securely store Developer ID and Notary profiles in the system Keychain.
Smart Compression
Choose between UDZO for compatibility, ULFO for speed, or UDBZ for maximum compression ratios.
Build Templates
Automate output naming with dynamic variables like ${VERSION} and ${DATE} for a perfectly organized release pipeline.
From .app to Notarized DMG in 60 seconds
Watch how Gravity DMG transforms your release process. Drag, drop, and deploy.
Trusted by High-Performance Teams
From indie developers to enterprise teams, see why pros choose Gravity DMG.
"I used to struggle with command-line tools and JSON configs just to get a decent DMG. Gravity DMG's visual editor is a breath of fresh air—I just drag my assets, pick a 'Cosmic' background, and it looks professional instantly."
"The notarization pipeline is what sold me. It handles the Hardened Runtime, signing, and notarization automatically. No more fighting with codesign or failed uploads. It just works."
"You can tell this is a native Swift app. It's blazing fast and fits right into my workflow. The fact that it stores credentials in the Keychain instead of plain text files is a huge security wins for our team."
"Finally, a DMG tool that doesn't have a subscription. One-time payment for a tool that saves me hours every release? Absolute no-brainer. The build templates are a nice bonus too."
Simple, Transparent Pricing
Start with a free 7-day trial. Upgrade to a lifetime license when you're ready.
7-day Trial
Test drive the full power of Gravity DMG.
Pro License
One-time payment. Lifetime license.
Frequently Asked Questions
Everything you need to know about Gravity DMG