About Seal Your App

You've built something worth shipping. Getting it into your users' hands should be the easy part — but it isn't.

MacOS Gatekeeper blocks unsigned applications outright. Windows SmartScreen warns users that your software might be dangerous. These operating system security gates exist for good reason, but getting past them requires code signing — a process that was never designed to be simple.

On MacOS, you need an Apple Developer account, a Developer ID certificate, and a multi-step pipeline involving codesign, notarytool, and stapler. On Windows, it's even harder — obtaining code signing certificates requires identity verification, proof of company establishment, tax history, and either an EV certificate on a physical hardware token or an Azure Trusted Signing account with its own onboarding process.

Then there's installer packaging. Building a professional installer with custom icons, license agreements, and correct install paths means learning platform-specific tools that only run locally — and they're different for every platform.

Seal Your App removes all of this. Upload your compiled binaries, configure your installer, and we handle the rest — code signing, installer packaging, and notarization. Both MacOS and Windows, one workflow, no toolchain required.

What ‘sealing’ means

Sealing is our umbrella term for the entire code signing process. When you seal a build, we handle every step that the operating system requires to recognize your software as legitimate:

  • Code signing — cryptographically signing your binaries with a verified publisher identity
  • Notarization (MacOS) — submitting your signed app to Apple for automated review and approval
  • Stapling (MacOS) — attaching the notarization ticket to your installer so it works offline
  • Timestamping (Windows) — ensuring your signature remains valid even after the certificate rotates

The result is an installer that both operating systems recognize and trust. No security warnings, no blocked downloads — just a clean install experience for your users.

Sealing verifies publisher identity and ensures your software has not been altered. It does not review, audit, or guarantee the quality, safety, or functionality of the sealed code.