macOSX Catalina 10.15

macOS Catalina 10.15: The End of an Era

Released on October 7, 2019, macOS Catalina (version 10.15) was one of the most transformative updates for the Mac in nearly two decades. Named after the beautiful Santa Catalina Island in California, this version brought several groundbreaking features but also marked a "clean break" from the past.

The Death of iTunes

After 18 years of service, iTunes was officially retired in Catalina. It was replaced by three dedicated, streamlined apps that mirrored the iOS experience:

• Apple Music: The new home for your music library and the streaming service.

• Apple TV: For all your movies, TV shows, and 4K HDR content.

• Apple Podcasts: A dedicated space for discovering and listening to your favorite shows.

• Finder Syncing: Managing your iPhone or iPad didn't disappear—it simply moved to the Finder sidebar, making it feel more like a native part of the file system.

Sidecar: Your iPad as a Second Screen

One of the most loved features for Chasms.com users was Sidecar.

• Extended Desktop: You could use your iPad as a secondary display for your Mac, either wirelessly or via a cable.

• Apple Pencil Support: Sidecar allowed you to use your iPad and Apple Pencil as a high-precision drawing tablet for Mac apps like Photoshop or Illustrator.

32-Bit App Deprecation: The "64-Bit Only" Era

Catalina was the first version of macOS to completely drop support for 32-bit applications.

• The Break: This meant that older software, legacy drivers, and even some older versions of Adobe and Microsoft apps would simply no longer open.

• Security & Performance: While polarizing, this move allowed Apple to modernize the system, improving security through app notarization and a new read-only system volume that protected core OS files from malware.

New Tools: Find My and Screen Time

• Find My: Apple merged "Find My iPhone" and "Find My Friends" into a single app. Most impressively, it could now locate a lost or stolen Mac even if it was offline and sleeping, by using a secure "crowdsourced" Bluetooth network of nearby Apple devices.

• Screen Time: Borrowed from iOS, this feature provided detailed reports on how you spent time in apps and allowed for the setting of usage limits—perfect for productivity.