Skip to content
Thoughtful, detailed coverage of everything Apple for 34 years
and the TidBITS Content Network for Apple professionals
The macOS Catalina hero image.

Photo by Apple


No Mac Is an Island with macOS Catalina

Let’s face it. Macs users are adrift in a sea of iOS devices. Waves of iPhones and iPads break around us, and even an occasional iPod touch floats by. So it shouldn’t be at all surprising that the forthcoming macOS 10.15 Catalina focuses on changes that bring the Mac and iOS closer than ever before.

That’s not to say that Apple is trying to replace the Mac with iOS or remove those unique capabilities of the Mac that make it special. The Mac and macOS remain first-class, vibrant Apple hardware and software platforms. But what we’re not going to see, at least from Apple, are new technologies that set the Mac further apart from its iOS brethren. When it comes to operating systems, it’s safe to say that it’s one for all, and all for Apple.

In today’s Worldwide Developer Conference keynote, Apple’s Craig Federighi whipped through the major changes, most of which revolved around individual apps. Unsurprisingly, those changes largely reflect or are matched by similar changes in the iOS versions, but there were Mac-specific enhancements as well.

Ding, Dong, iTunes Is Dead

Federighi had a fabulous riff where he discussed all the features Apple was planning to add to iTunes—Calendar! Mail! A dock!—before acknowledging that iTunes is dead, Jim. (Cue the music from the Wizard of Oz.) Or rather, it’s dead on the Mac—iTunes will continue to exist, zombie-like, for Windows.

Craig Federighi jokingly announcing mail in iTunes

Instead, to match iOS, Apple has split the iTunes feature set into three new apps, called Music, Apple Podcasts, and Apple TV. (In fact, Federighi called Music “Apple Music,” but Apple’s preview page for Catalina calls it just “Music,” which is good since otherwise we’d be talking about subscribing to Apple Music in Apple Music.)

Apple Podcasts in Catalina

As far as we could tell from the quick presentation, the three apps are similar to their iOS counterparts, although Federighi did say the Apple TV app on the Mac would support 4K HDR video with HDR10 and Dolby Vision and Atmos on sufficiently capable Macs. One new feature—albeit one that extends to the iOS and tvOS versions as well—the Music app’s player can show lyrics in real time as music plays.

What about the syncing features of iTunes? macOS Catalina builds them into the Finder. Attach an iOS device to a Mac and it appears in a Finder window’s sidebar. Select it and what looks like the standard iTunes sync settings screen appears in the window. You won’t get syncing or management of iOS apps, but you’ll be able to back up, update, and restore devices from the Mac.

Managing an iPhone in the FInder

In the “one more new app” category unrelated to iTunes (and again mirrored in iOS), a new Find My app combines the capabilities of Find My iPhone and Find My Friends to display the location of both devices and people. Location-based notifications can now be scheduled for different days of the week and provide more useful place names. Most interestingly, a missing Mac that’s asleep can still report its location via Bluetooth (in a completely encrypted, anonymous way) to nearby Apple devices.

App Enhancements

Catalina brings enhancements—some significant, some not—to many of Apple’s included apps. Again, for the most part, these changes also exist in the iOS versions.


Apple continues to tinker with Photos, this time trying a new browsing experience with a lot of machine-learning underpinnings. Previews are now larger to help you distinguish between shots, Photos learns who is in your photos to highlight important shots, and new Day, Month, and Year views summarize what you’ve done in those time frames by eliminating similar pictures and focusing on key images.

The new Photos layout

Live Photos and videos now begin playing as you scroll, making them easier to identify and bringing your library to life. You’ll also be able to view Memory movies on your Mac and edit the duration, mood, and title—your edits will sync to other devices if you use iCloud Photos.


We’ve criticized Reminders a number of times (see “Bad Apple #3: Reminders Doesn’t Listen to Siri,” 6 April 2018, and “Bad Apple #4: Reminders Stinks at Sorting,” 3 May 2019) and while it remains to be seen if Apple has addressed those issues specifically, the company has significantly updated the app. A few of the main changes include:

  • Adding times, dates, and locations no longer requires opening another screen.
  • You can add attachments such as photos, documents, scans, and Web links.
  • Smart lists automatically organize upcoming reminders from different lists into categories like Today, Flagged, and Scheduled.
  • Siri can now suggest reminders when you’re making plans in a Messages conversation, and if you tag someone in a reminder, the next time you chat with them in Messages, the reminder will alert you.
  • You can group multiple lists and capture tasks that are associated with a top-level reminder
  • For added visual interest, you can customize lists with 12 colors and 60 symbols.

The Reminders app in Catalina.


Apple’s Notes app will feature a new gallery view that displays notes as thumbnails, which could help if your notes are largely graphical. It also offers new checklist options that make it easier to reorder checklist items and reuse checklists without having to uncheck each item individually.

Sharing in Notes will improve as well, with a view-only option that lets you share items so everyone else can see what you do without being able to make changes. And if you do a lot of sharing, you can share entire folders rather than just individual notes, either with full access or view-only permissions.


Not much has changed in Safari, but Catalina brings an updated start page, makes it easier to enable Picture in Picture, warns you about weak passwords, and directs you to open tabs that match the URL of a site that you’re typing.


As with Safari, Mail’s changes are fairly minor. It will be able to block all messages from specified senders and move their messages to the trash. Or, if that’s too extreme, you can mute threads that are being overly active. Finally, mailing list messages will get an Unsubscribe link above the header.

Screen Time

Another technology that Apple is bringing from iOS to macOS with Catalina is Screen Time, which tracks and reports on your usage, and lets you set usage limits. It’s a welcome move since parental controls in macOS had been ignored for years. Screen Time on the Mac will provide the same set of Downtime and App Limits as in iOS, and if you use iCloud, it will sync the same settings across all your devices. A feature that seems to be new is the concept of “combined limits” that bring together a combination of app categories, specific apps, and Web sites.

Screen Time in Catalina.

Parents will appreciate Screen Time’s new capability to manage contacts and set communication limits, and if you have Family Sharing turned on, you’ll be able to configure and manage Screen Time from any device for your kids on all their devices.

Everyone who uses Screen Time limits will like the new “One more minute” option that gives you another 60 seconds to finish up what you’re doing.


With the new Sidecar feature, Apple is bringing Macs and iPads closer together… literally. Much like solutions such as AirDisplay, DisplayLink, Duet Display, and Luna Display, Sidecar lets you turn an iPad into a secondary display and graphics tablet for your Mac. (Our condolences to the developers of the other screen-sharing apps, who have just been Sherlocked.)

Sidecar will work wirelessly or over a wired connection, and our bet is that the latter will provide better performance. You can use it either to extend your desktop for more screen real estate or to mirror your screen so others can see what you’re doing.

If you use an Apple Pencil with your iPad, you’ll be able to use it with tablet-enabled Mac apps, and regardless, Apple says you’ll be able to write and sketch on PDFs or mark up documents with the Apple Pencil, a feature called Continuity Markup. Or, with Continuity Sketch, just sketch with the Apple Pencil and insert it into any Mac document.

Standard Multi-Touch gestures will work on the iPad while it’s displaying text from a Mac app, even the new text-editing gestures in iPadOS. And finally, apps with Touch Bar support will display Touch Bar controls at the bottom of the iPad screen even on Macs that don’t have a Touch Bar.

If you’re looking forward to Sidecar, you may want to pick up something like a Mountie (see “Attach an iPad to Your MacBook as a Second Display with Mountie,” 22 February 2019).

Project Catalyst

With Mojave, Apple gave us Mac versions of Home, News, Stocks, and Voice Memos, thanks to a technology codenamed “Marzipan” that made it easy to convert an iOS app to macOS. That was the first phase of Apple’s master plan, and with Catalina, we’re moving into the second phase. The technology now has a real name—Project Catalyst—and this year developers are getting access to the Catalyst technology to create Mac versions of iOS apps.

Several prominent third-party developers were quoted on stage as to how quick and easy it was to make a Mac version of an iPad app, maintaining a single code base and with the same development team. I expect nothing less from a keynote.

What remains to be seen, however, is if Apple has enhanced the Catalyst technology sufficiently so the Mac apps built with it don’t suck. Home, News, Stocks, and Voice Memos run, but they’re lousy Mac apps.

That will mostly be an issue with productivity apps that we expect to look, walk, talk, and quack like Mac apps. For games and Web apps, just having something native on the Mac rather than having to switch devices or run in a browser tab will be welcome.

Security and Safety

Apple continues to improve the security of its platforms, and Catalina receives some enhancements in that area:

  • Dedicated system volume: To prevent system files from being tampered with, Catalina runs in a dedicated, read-only system volume. That also keeps it separate from all other data. We’re curious how this will impact macOS setup and troubleshooting.
  • Enhanced Gatekeeper: We’re guessing this bullet point from Apple involves notarization, about which Howard Oakley has written a great deal at his Eclectic Light Company blog.
  • Activation Lock: Macs with T2 chips gain support for Activation Lock, just like iOS devices, so if one is lost or stolen, only you can erase and reactivate it.
  • Separated kernel extensions: To increase security (and probably reliability), Catalina requires peripherals and low-level apps that relied on kernel extensions to run separately from the operating system. We’re betting this will cause compatibility issues with older devices and software.
  • More data protections: Apps running in Catalina will have to ask for permission to access even more of your data or to perform actions like key logging or video recording that could be privacy violations.

The feature that most intrigues me is that Catalina will let you approve any dialog that asks for your Mac’s login password by double-clicking the side button on your Apple Watch. At last!

Accessibility Improvements with Voice Control

In “Nuance Has Abandoned Mac Speech Recognition. Will Apple Fill the Void?” (21 January 2019), I wrote about the problems Mac users faced after Nuance discontinued Dragon Professional Individual for Mac, and TidBITS reader Todd Scheresky called for Apple to add support for custom words, speaker-dependent continuous speech recognition, and cursor positioning and mouse button events.

Happily, it seems Apple was listening, since Catalina features a slew of accessibility improvements, including everything Scheresky asked for. The new Voice Control capability offers full control over your Mac and any iOS devices. You can rely entirely on your voice to navigate an app via navigation commands, names of accessibility labels, numbers pointing at controls, and grids.

Anyone interested in reducing their typing will appreciate Voice Control’s enhanced dictation, and it builds in a rich set of text-editing commands that let you correct words, replace phrases by name, select text, or navigate within text. Even better, if you wish to use voice commands to control your Mac, it will seamlessly transition between text dictation and commands.

Frankly, Voice Control may be one of the most important improvements in Catalina and iOS 13.

But that’s not all the accessibility improvements in Catalina, others of which include:

  • The option to tint your entire screen, which could help people with various visual difficulties and migraines—see Charles Maurer’s discussion of the topic in “Better than the Printed Page: Reading on an iPad” (15 March 2018)
  • The capability to use the new text-to-speech Siri voice for VoiceOver and Speech
  • Hover Text, which displays a high-resolution zoom of text, text fields, menu items, buttons, and more in a dedicated window
  • An option to use a second display to zoom a portion of the same screen
  • Simplified tab navigation via VoiceOver

Other Features

As you would expect, Apple has plenty of other small features slated for Catalina. The most interesting ones include:

  • iCloud Drive folder sharing makes Apple’s file sharing solution more competitive with services like Dropbox.
  • File sharing services gain a new way to integrate with the Finder without needing a kernel extension.
  • If an update causes problems, you’ll be able to use macOS Recovery to restore from an APFS snapshot taken just before the installation. That should reduce the stress involved with installing macOS updates.
  • Improvements in QuickTime Player include Picture in Picture, movie creation from a folder of sequentially numbered stills, more technical information about movies, and timecode support.
  • HomeKit Secure Video will record security video to iCloud. Look for HomeKit-enabled security cameras to appear soon.
  • Unified Apple ID account information will be available directly in an app on the Mac. This is probably another aspect of iTunes that Apple needed to break out.


Betas of macOS Catalina for developers are available now, and Tim Cook said that a public beta would arrive in July 2019, with the final release due in the “fall,” probably meaning September of this year.

Catalina has the same hardware requirements as Mojave, running on MacBook Air, MacBook Pro, Mac mini, and iMac models from 2012 and later, Mac Pro models from 2013 and later, and all models of the MacBook and iMac Pro.

Subscribe today so you don’t miss any TidBITS articles!

Every week you’ll get tech tips, in-depth reviews, and insightful news analysis for discerning Apple users. For over 33 years, we’ve published professional, member-supported tech journalism that makes you smarter.

Registration confirmation will be emailed to you.

This site is protected by reCAPTCHA. The Google Privacy Policy and Terms of Service apply.

Comments About No Mac Is an Island with macOS Catalina

Notable Replies

  1. Well, I sure hope the new “Music” Mac OS application retains the functionality of iTunes, rather than the broken capabilities of iOS In particular, iOS is -worthless- if you listen to album oriented music (classical, jazz, progressive rock, etc)!

  2. I’m guessing the iTunes applications in older versions of Mac OS will continue to work particularly on hardware that can’t be updated to Mac OS 14 (Mojave) or later.

  3. Interesting, So Music will not include syncing as rumored. Instead, the Finder will do that.

    Not sure how I feel about that. Finder windows all of a sudden becoming iSync portals sounds to me as a bit Windowseque. I’m anxious to see how Apple implemented it.

    • If an update causes problems, you’ll be able to use macOS Recovery to restore from an APFS snapshot taken just before the installation. That should reduce the stress involved with installing macOS updates.

    How long will this take? Is it faster compared to cloning before updating and, in case the update goes bad, simply cloning back?

  4. One item I miss on this list is some kind of dynamic DNS service attached to iCloud. This can’t be hard for Apple to implement in macOS. With all our Aple devices already listed on our iCloud accounts, all they’d need to add essentially is a DNS update deamon to inform the mothership of the devices current IP whenever that changes in conjunction with the option to tunnel traffic to Macs on a LAN. Then give people generic domain names for their Apple gear they can use to connect remotely. With Back to my Mac dead, it would have been so nice to see something like this added to Catalina. Guess it’s too much of a nerd feature. :open_mouth:

  5. I just bought a new Mac mini in the fall, but if the Music app doesn’t preserve my 10,000+ star ratings (with half-stars enabled), Mojave will be the last Mac operating system I use.

  6. Catalina has the same hardware requirements as Mojave, running on MacBook Air, MacBook Pro, Mac mini, and iMac models from 2012 and later, Mac Pro models from 2013 and later, and all models of the MacBook and iMac Pro.

    So the 2010 and 2012 Mac Pro aren’t supported anymore? I don’t see them listed on Apple’s site either. They could run Mojave with a supported graphics card.

  7. I had the same thought, but “same hardware requirements as Mojave” implies that if your computer can run Mojave, it can run Catalina. Of course, Apple can have its installer balk at computers it wishes to deem obsolete or unsupported, regardless of their capability to run the software.

  8. I was worried about losing syncing, but I think putting it in Finder is conceptually better than in a Music app. Syncing is about a lot more than Music, so it would be odd to go into Music to do it. I’m also glad that it looks like the Finder sync will do all types of media. There was a year where I think audiobooks had to be selected in iBooks with everything else in iTunes. That was a pain.

  9. I fully agree with that. Syncing out of Music would have made little sense. I’m not sure how thrilled I am about shoehorning this into Finder as opposed to using a separate app for that (think iSync), but as I wrote above, I’ll reserve judgment for when i actually try it out.

    One thing I’m curious about and not reading anything on is sync over wifi. All reviews I’ve read indicate that iPhones will show up as a device in the Finder sidebar when connected through USB. Great. But what about wifi sync? Will that remain? Will the iPhone then just always show up in devices when it’s on the same wifi as the Mac?

  10. Creating APFS snapshots is basically instantaneous. Depending on how it’s implemented, restoring may also take no time at all or may take some time, my guess would be equivalent to how long the install took. Doing this for macOS updates is reassuring, having the option for any kind of install or change would be even more so. I think one can already make a snapshot whenever so it should only require the Recovery partition to give the option to restore any snapshot, not just the last one triggered by an OS update.

    It’s a niche issue but I wonder if restoring will break a Mac’s binding to Active Directory, making logging in with an AD account fail. I’ve had this happen to Windows virtual machines after restoring their snapshots; domain controllers don’t want to see clients “go back in time.”

  11. Interesting. Yeah, it sounds like it would be great if we could chose to restore from any available snapshot. If restore is that fast, you could think of a lot of other tasks where this kind of functionality would come in handy.

  12. My biggest issue with Catalina will be losing 32-bit applications. I still have a bunch that I depend on. For example, I still use Quicken 2007 because I still haven’t found a worthy replacement (any hints would be appreciated, and I’m very underwhelmed by recent Quicken editions). In other cases, the applications are useful but no longer supported without equivalent replacements.

  13. I have one 32-bit app that I will miss very much when our work Macs move to MacOS 10.15. The apps publisher is out of business. But I have time. I have been thinking about this issue overall. It costs money for Apple to continue to support 32-bit apps, I suspect more than most people imagine.

    1. How much would I be willing to pay for a MacOS Update that will continue to support 32-bit apps? $50? $100? $1,000?

    2. How much would I be willing to pay for an upgraded version of the software I want to continue using. Some apps still have publishers but the cost of redesigning the app is too expensive for the publisher. I am sure we would see a new version of DragThing if everyone using it was willing to pay $500 for an upgrade.

    I find when I add a $ value to what I want I often find I don’t want it that much.

  14. Ding, Dong, iTunes Is Dead

    Hmmm, Podcasts, huh?

    …just wondering if it will offer user tools to manually add episodes, edit metadata (including long descriptions), create smart playlists, run “Doug’s Scripts”, etc, etc

    I’ve accumulated a sizable library over the past 15-20 years, comprised mostly of information type content (vs. news & entertainment, etc) - I use iTunes as a database to augment my subject-matters-of-interest research

    So, on the off chance macOS Podcasts mimics the minimalist functionality of it’s iOS cousin…

    What’s a fella to do?

    Anyone have suggestions on iTunes alternatives?

    In the past I did some poking around to see what’s out there, then motivated more by iTunes’ misbehavior, but didn’t pursue it too far, or with any AHA! discoveries, since I found ways to work around iTunes’ shenanigans (viz., turn off the iTunes Store, for one)

    I gave Plex a shot at it and was less than pleased with how it handled (and didn’t) my carefully curated library (I use a third party metadata editor before manually adding anything to iTunes)

    VLC is on my radar (and my iMac) but, my limited testing suggests it won’t cut the mustard either

    Thanks in advance for any guidance

  15. Ray

    My main concern is the lack of an .xml file in the new Music app. I use TuneSpan to move a lot of music and movies (esp movies) to an external drive since Apple has moved to smaller SSD drives. May have to move my whole iTunes library off the main disk if it is not able to be updated.

  16. Andrew, I used Quicken for years, and recently moved to You Need a Budget, which is a website and iPhone app. It’s changed my relationship with my personal finances. It’s not for those who need something stocks, but when it comes to setting financial goals and tracking spending, it’s really outstanding. Message me if you want a referral link.

  17. How in the world can you update an operating system that is on a read-only partition?

  18. The same way it already updates the parts of the OS protected by SIP, it’s read-only to you, not to the installers signed with Apple’s certificate.

  19. This is an improvement I guess…but will require that the installer repartition your drive before actually installing Catalina obviously. I can see both pros and cons to doing it this way.

    It’s not a panacea though…and earlier versions of macOS aren’t unprotected from this since changing stuff in the system area requires inputting admin credentials now. In particular…what happens when we get macOS whatever it is 2 versions from now and the read only partition isn’t big enough. At that time it will need resizing.

    Nothing to be done about it though…users will be given no choice about having the read only partition or not…if you install Catalina you’ll get it.

    For those of us that already have our daily driver account being non-admin…the additional protection is less. That’s a small minority though…the vast majority of folks that I have dealt with have only a single account on their machine…and having no password is also a pretty common occurrence.

  20. I’m just guessing, but most likely it will not. APFS has space sharing, so it lets you set volumes so that they are all sized to take the whole disk and the file system just allocates unused space as each one needs it. I haven’t installed Catalina to check (and probably won’t until it’s released in the fall), but I’d guess that they do something like that.

  21. AFPS sort of virtualizes the drive as computers have done for memory for decades. So, partitions are no longer “fixed” allocations. You set a max for each “partition” and the system uses “real” blocks as needed. (Which is why this can be
    painful on spinning rust. Block location doesn’t really matter on SSDs but matter a LOT on spinning media.)

  22. You are probably right…I’m not very knowledgeable about APFS and how it works at the drive level.

  23. I think it would still be a good idea to make a clone before you update. It’s relatively painless to do.

  24. I won’t consider that Apple is taking usability seriously as long as they maintain the goth gray interface. I’m visually impaired and I used color and custom icons in the Finder sidebar as navigation aids. Now that they’re gone, using the sidebar is much harder than it was. Epic fail.

  25. Why would assume it would not preserve your ratings?

    Because Apple has been on a steady course of deprecating star ratings for years, first by breaking many of my smart playlists when they started automatically assigning ratings to unrated tracks, and then by not making a ratings interface available in non-Mac operating systems, which usually point to future changes in Mac OS.

  26. Andrew, have you looked at iCompta or iFinance? MY preferred “Quicken for Mac 2007 Lion Compatible” has been PocketMoney Desktop. However the developer, Hardy Macia, passed away in 2013 so I’ve been running those two applications in tandem with PMD and Q4MacLC.

  27. Dennis, thanks! I’ll have to check those out.

  28. Will the Music app support playing shared music libraries from other Macs that remain on older OSX versions?
    I have a MacMini 2010 (Sierra) that shares its Music library with my iMac in my study.
    I use this Music library quite a lot.

  29. Howdy all
    Just wondering if anyone running Catalina Beta has tried installing iTunes to see if and how it works

Join the discussion in the TidBITS Discourse forum


Avatar for ace Avatar for Simon Avatar for andrew Avatar for cwilcox Avatar for raykloss Avatar for romad Avatar for rogerd.parish Avatar for pchernoff Avatar for johan.van.rafelghem Avatar for jzw Avatar for amalis Avatar for neil1 Avatar for takecontrol2 Avatar for jeff5 Avatar for ddmiller Avatar for deemery Avatar for raleighthings Avatar for Jeff_Swart Avatar for waynec Avatar for yepperoni