On a real Mac, your apps do not all update from one place. Some come from the App Store, some from Homebrew, some from a built-in updater like Sparkle, and some from a download you grabbed off a vendor's website. This guide explains where Mac app updates actually come from, why there is no single “Update All” button, and a simple workflow to keep everything current without installing something you should not trust.
The five places Mac apps update from
- Mac App Store. Apps installed from the App Store update through the App Store app and your Apple Account. This is the most managed path: Apple reviews and signs every build.
- Homebrew. Developer tools and many GUI apps installed as Homebrew formulae or casks update from the command line with
brew upgrade. - Sparkle and other in-app updaters. Many third-party Mac apps ship their own updater (commonly the open-source Sparkle framework) that checks a feed and replaces the app in place.
- Vendor updaters. Large vendors run dedicated tools: Microsoft AutoUpdate, Google Software Update, Adobe Remote Update Manager, Docker Desktop, and others.
- Direct downloads. Some apps are only updated by downloading a new DMG or ZIP from the vendor and dragging it into your Applications folder.
Why there is no single “Update All” button
macOS only manages updates for apps that came from the Mac App Store. Everything else carries its own update logic, on its own schedule, checking its own server. That is why keeping a Mac current usually means opening the App Store for some apps, running Homebrew for others, and launching individual apps to let their built-in updaters run, while a few apps quietly fall behind because their updater only runs when the app is open.
The scattered approach is not just tedious. It also makes it hard to answer the one question that matters before any update: is this update actually safe to install?
A safe update workflow: find, judge, protect
Whatever tool you use, a trustworthy update routine comes down to three steps.
- Find. Build one list of every installed app, its source, and whether a newer version exists. You cannot review what you cannot see.
- Judge. For each available update, decide whether it is safe to install now, worth a closer look, or better handed off to the vendor's own updater.
- Protect. For updates that replace an app in place, back up the current version first so a bad release can be rolled back.
How to tell an update is trustworthy
Before you let anything replace software in your Applications folder, check a few things:
- Source. The update metadata should be delivered over HTTPS, never cleartext, and should come from the developer's own channel.
- Identity. The replacement should have the same bundle identifier and the same signing team as the app you already have installed, so a lookalike cannot slip in.
- Direction. The new version should be newer than the installed one. A served “update” that is actually older can be a downgrade attack.
- Signature. Sparkle updates should be verified against the installed app's public key, and direct releases should be Developer ID signed and Apple-notarized.
App Store and notarized updates already get much of this checking from macOS. Direct downloads and third-party updaters are where most of the risk lives, and where these checks matter most.
Where macCurrent fits
macCurrent brings the five update sources above into one reviewable list, labels what is safe to install versus what needs review, verifies downloads before they replace anything, and can back up eligible apps before a direct replacement. It is a free beta for Apple Silicon Macs on macOS 15 or later. Read the security model for exactly what it verifies, or download the beta.
Frequently asked questions
Why doesn't macOS have one button to update every app?
macOS only manages updates for apps installed from the Mac App Store. Apps from Homebrew, vendor updaters, and direct downloads each carry their own update mechanism, so no single system button can update all of them.
How do I know if a Mac app update is safe to install?
Confirm the update comes from the same developer as the installed app, that it is delivered over HTTPS, that the new version is newer than the installed one, and that the bundle identity and signing team match. See is it safe to auto-update Mac apps? for the details.
Should I back up an app before updating it?
For App Store and most vendor-managed updates it is rarely necessary. For direct-download updates that replace the app bundle, a backup lets you roll back. See how to back up a Mac app before updating.