App Trust Preview - Check Mac apps before opening Check Mac apps before opening.

App Trust Preview creates a plain-language trust report for any Mac app<br>before you run it.

Drop an app, choose one from Finder, or press Space for Quick Look. The<br>report explains signature, notarization, sandbox, privacy access,<br>internal helpers, technologies, and other macOS trust signals.

Download on the Mac App Store<br>Read FAQ

Inspects locally

Read-only

No upload required

Quick Look ready

What App Trust Preview checks

Main app and Quick Look<br>Inspect from the main app, or preview a .app inline with Finder Quick Look before you open it.

Trust verdict and signal summary<br>A top-level verdict summarizes the important signals first, then explains what looks good, what needs context, and what deserves caution before opening.

Apple's safety checks<br>Signature and developer identity, notarization, certificate revocation, App Sandbox, Hardened Runtime, distribution channel, and quarantine status are shown with concrete labels.

Capabilities and entitlements<br>Entitlements are grouped into readable categories such as Internet, Files, Devices, System, iCloud, Keychain, App Groups, Associated Domains, and Hardened Runtime exceptions.

Privacy access and saved decisions<br>See what an app can request and your saved macOS decision for many permissions: Allowed, Denied, Limited, Add-only, Not determined, or Unknown.

Inside-the-app component checks<br>Nested apps, helpers, XPC services, login items, app extensions, frameworks, dynamic libraries, and plug-ins get their own signing and sandbox status, with outside-bundle symlinks called out.

Detected technologies and binary details<br>Identify Electron, Chromium, Flutter, Qt, SwiftUI, AppKit, Java, Python, .NET, Godot, browser engines, and more, plus architectures, SDK, deployment target, and linked libraries.

Text and JSON export<br>Export the full report as plain text for people or JSON for automation, notes, support, or comparison later.

How it works

Choose an app<br>Drop a .app bundle, choose it from Finder, or preview it with Quick Look.

Local scan<br>App Trust Preview streams checks as they complete, reading signature data, entitlements, Info.plist, Mach-O metadata, technologies, privacy declarations, and every runnable component locally.

Read the report<br>The report puts the most important "before you open it" findings first, then shows the supporting evidence in expandable sections.

Export if needed<br>Save the result as plain text or JSON for notes, automation, support, or comparison later.

Two ways to inspect before opening

Use the full app when you want to inspect deeply, or Quick Look when you<br>are still in Finder and want the report before opening the app.

Main app<br>Drag, choose, rescan, expand details, and export text or JSON reports.

Finder Quick Look<br>Press Space on any .app to preview the same trust report inline, then hand off to App Trust Preview for deeper review.

Quick Look brings the report to Finder, with an Open in App Trust Preview hand-off.

What the report means

Strong safety signals<br>The main macOS checks look good: valid signature, sandbox, Hardened Runtime, notarization, non-revoked certificate, and bundled components that are signed and limited.

A few things to know<br>Some signals need context before opening, such as a non-sandboxed app, weaker network settings, sensitive permission requests, or saved privacy decisions that deserve review.

Some signals are weaker than usual<br>The report highlights stronger concerns such as invalid or revoked signatures, unsigned components, sandbox escape patterns through helpers, private framework links, private symbol matches, or hardened-runtime exceptions.

Not enough information<br>macOS could not confirm enough about this app from inside our sandbox to give a confident verdict.

The verdict is based on concrete app-bundle signals. It helps you decide what deserves trust or caution, but it is not antivirus and cannot prove an app is safe or malicious.

See App Trust Preview in action<br>Fresh screenshots showing the main app report, saved privacy decisions, technology detection, and Quick Look preview.

Start from the main app, Finder, or Quick Look. App Trust Preview reads the bundle locally and never launches the inspected app. The top report summarizes the verdict first, then expands into Apple safety checks, detected technology, file access, and other grouped evidence. The report can show saved macOS privacy decisions next to what the app can request. Location remains Unknown by design. Quick Look makes app review part of the normal Finder flow: select an app, press Space, and inspect before opening.

Privacy. Local-first by design.<br>App Trust Preview is privacy-first and inspects apps on your Mac, including the main app and Finder Quick Look workflows.

The Mac app sends no network requests of its own.

The inspected app bundle is not uploaded.

The inspected app is not launched.

The inspected app is not modified.

Reports are...