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.

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.

Gravity DMG - Stop fighting the terminal. Ship your Mac App in style. 🚀 - YouTube

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."

  • Jessica L., Indie Developer

"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."

  • David M., macOS Engineer

"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."

  • Emily R., DevOps Lead

"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."

  • James F., Product Manager

Simple, Transparent Pricing

Start with a free 7-day trial. Upgrade to a lifetime license when you're ready.

7-day Trial

  • Free
  • Test drive the full power of Gravity DMG.
  • Full Feature Access
  • 7-Day Duration
  • No Credit Card Required

Pro License

  • $14.99
  • One-time payment. Lifetime license.
  • Unlimited Builds
  • Commercial Distribution
  • Priority Support
  • Lifetime Updates
  • Secure Checkout
  • Instant Delivery

Frequently Asked Questions

General

Do I need an Apple Developer Account to use Gravity DMG?
Yes. To sign and notarize your applications for public distribution, you will need an active Apple Developer Program membership to generate the necessary certificates and API keys.

Does Gravity DMG store my Apple ID or passwords?
Never. Gravity DMG integrates directly with the macOS Keychain. Your credentials stay on your machine, and we only reference the local "notarytool" profiles you've already configured or created within the app.

Technical

Which versions of macOS are supported?
Gravity DMG is built for the modern Mac. It requires macOS 13.0 (Ventura) or later and is fully optimized for both Apple Silicon and Intel-based Macs.

Does it support CI/CD pipelines?
Currently, Gravity DMG is a visual tool designed for a "hands-on" finishing process. However, you can save Build Templates as configuration files to ensure consistency across different versions of your app.

What compression formats do you support?
We support all standard Apple disk image formats including UDZO (standard), UDBZ (maximum compression), and ULFO (optimized for fast mounting).

Licensing & Pricing

Is the Activation License really a one-time payment?
Yes. We believe in tools that you own. Your purchase includes a lifetime license for the current major version, including all minor updates and bug fixes.

How many Macs can I use my license on?
A single Pro License is valid for use by one developer on up to two machines (e.g., your iMac and your MacBook Pro).

What happens after the 7-day trial?
Once the trial expires, the build and notarization features will be locked. To continue exporting professional, signed DMGs, you'll just need to purchase a license key and enter it directly within the app to pick up right where you left off.