Posts By: Gary Rosenzweig

When using percentages in Mac Numbers, keep in mind that what you are using are really decimal fractions, and not the whole number shown as a percentage. Use formatting to properly show a value as a percent. Also learn how to use percents for sales tax and other things.

Take a look at all fo the markup tools you can use in Mac Preview to annotate PDF documents, including the new redaction tool. You can use these to edit documents, leave notes for yourself, or fill in PDF forms without set form fields.

You can drag and drop on the iPad like you can on a Mac to move files and perform other actions. The trick is to use Split View or Slide Over so you can see the origin and destination at the same time.

While researching a video on how to get file paths, I found a way to make the usually annoying Terminal "find" command much more useful. You can use this modification to suppress error messages!

While many apps come with your Mac, and Apple provides others for free, you can also find great third-party apps that don't cost anything. Take a look at five: a video player and converter, an audio editor, an image editor, a text editor and a full office suite.

If you have macOS Big Sur 11.3, then you can use the new iMac desktop backgrounds even if you don't have one of those new iMacs. They are hidden in your System folder and have light and dark modes.

The new AirTag from Apple allows you to track items in the Find My app on your iPhone or Mac. You can also locate nearby AirTags with a special feature of the most recent iPhones. A lot of security and privacy features are built in to the AirTags system.

When you buy a new Mac, how long can you expect it to last before you need a new one? The answer depends on how you use the Mac, your needs and how they change, and a variety of other factors.

If you need to grab a single frame from a video and turn it into a still image or add it to your Photos library, you can do it using a few steps even though a direct function for that doesn't exist in the current Photos app. Here are two methods you can use.

Apple posted a profit of $23.6 billion on revenue of $89.6 billion for their second fiscal quarter, more than doubling last year’s profit for the same quarter.

In the Music app on your Mac you can create playlists containing any songs from your library. You can arrange these songs inside the playlist, and also organize your playlists. You can also create Smart Playlists that select songs based on search criteria and automatically update as you add new music.

iOS 14.5 is really about the new ad tracking prevention that Apple has been building up to for a year. But in addition to that, there are some small new features worth noting.

This update to Big Sur brings new Emoji characters and new features in Reminders, Safari, News, Podcasts, Music and more. On M1 Macs you have new options for using iOS and iPadOS apps.

Drag and drop is one of the most basic skills you need to master to get the most from your Mac. You can use drag and drop to move files, rearrange items, move content from one app to another, and much more.

This became a much longer video than I thought, sorry about that. I wanted to go through the specifications for the new iMac and talk about them. If you are interested in my thoughts about the latest Mac, have a watch.

The Mac Calculator app seems simple at first, but it includes some pretty advanced features. It has a scientific and programmer mode, paper tape, a library of conversions and much more.

Multitasking on an iPad in iOS 14 is done using either Split View or Slide Over. The first allows you to split your screen between two apps. The second will palce a small vertical window over the main app. But activiating these features takes some complicated gestures.

Can your Mac run macOS Tahoe? How about Sequoia? Or Monterey? Here are the technical requirements for the most recent versions of macOS. Note that it does not matter how much memory or storage you have, or which CPU you have for the most recent versions of macOS. It only matters which model and year you have.

To check your Mac’s model and year, choose the Apple menu, About This Mac. Then look for the model and year.

macOS Tahoe

macOS 26 released September 15, 2025.
Wikipedia entry

• MacBook Pro (2020 M1 and later, and 2019 16-inch, and 2020 13-inch)
• MacBook Air (2020 M1 and later)
• Mac mini (2020 and later)
• iMac (2020 M1 and later)
• Mac Studio (2022 and later)
• Mac Pro (2019 and later)

Download link coming soon.

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macOS Sequoia

macOS 15 released September 16, 2024.
Features and versions
Wikipedia entry

• MacBook Pro (2018 and later)
• MacBook Air (2020 and later)
• Mac mini (2018 and later)
• iMac (2019 and later)
• iMac Pro (2017)
• Mac Studio (2022 and later)
• Mac Pro (2019 and later)

You can download macOS Sequoia here: https://apps.apple.com/us/app/macos-sequoia/id6596773750

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macOS Sonoma

macOS 14 released September 26, 2023.
Features and versions
Wikipedia entry

• MacBook (2017)
• MacBook Pro (2018 and later)
• MacBook Air (2018 and later)
• Mac mini (2018 and later)
• iMac (2019 and later)
• iMac Pro (2017)
• Mac Studio (2022 and later)
• Mac Pro (2019 and later)

You can download macOS Sonoma here: https://apps.apple.com/us/app/macos-sonoma/id6450717509

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macOS Ventura

macOS 13 released October 24, 2022. Final version 13.6.9.
Features and versions
Wikipedia entry

• MacBook (2017)
• MacBook Pro (2017 and later)
• MacBook Air (2018 and later)
• Mac mini (2018 and later)
• iMac (2017 and later)
• iMac Pro (2017)
• Mac Studio (2022)
• Mac Pro (2019 and later)

You can download macOS Ventura here: https://apps.apple.com/app/macos-ventura/id1638787999

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macOS Monterey

macOS 12 released October 25, 2021. Final version 12.7.6.
Features and versions
Wikipedia entry

• MacBook (Early 2016 and later)
• MacBook Pro (Early 2015 and later)
• MacBook Air (Early 2015 and later)
• Mac mini (Late 2014 and later)
• iMac (Late 2015 and later)
• iMac Pro (2017 and later)
• Mac Studio 2022
• Mac Pro (2013 and later)

You can download macOS Monterey here: https://apps.apple.com/app/macos-monterey/id1576738294

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macOS Big Sur

macOS 11 released November 12, 2020. Final version 11.7.10.
Features and versions
Wikipedia entry

• MacBook (2015 or later)
• MacBook Air (2013 or later)
• MacBook Pro (Late 2013 or later)
• Mac mini (2014 or later)
• iMac (2014 or later)
• iMac Pro (2017 or later)
• Mac Pro (2013 or later)

You can download macOS Big Sur here: https://apps.apple.com/us/app/macos-big-sur/id1526878132

You can upgrade from: Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks.

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macOS Catalina

macOS 10.15 released October 7, 2019. Final version 10.15.7.
Wikipedia entry

• MacBook (Early 2015 or newer)
• MacBook Air (Mid 2012 or newer)
• MacBook Pro (Mid 2012 or newer)
• Mac mini (Late 2012 or newer)
• iMac (Late 2012 or newer)
• iMac Pro (2017)
• Mac Pro (Late 2013 or newer)

You can download macOS Catalina here: https://apps.apple.com/us/app/macos-catalina/id1466841314

You can upgrade from: High Sierra, Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion.

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macOS Mojave

macOS 10.14 released September 24, 2018. Final version 10.14.6.
Wikipedia entry

• MacBook (Early 2015 or newer)
• MacBook Air (Mid 2012 or newer)
• MacBook Pro (Mid 2012 or newer)
• Mac mini (Late 2012 or newer)
• iMac (Late 2012 or newer)
• iMac Pro (2017)
• Mac Pro (Late 2013; Mid 2010 and Mid 2012 models with recommended Metal-capable graphics cards)

You can download macOS Mojave here: https://apps.apple.com/us/app/macos-mojave/id1398502828

You can upgrade from: Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion.

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macOS High Sierra

macOS 10.13 released September 25, 2017. Final version 10.13.6.
Wikipedia entry

• MacBook (Late 2009 or newer)
• MacBook Pro (Mid 2010 or newer)
• MacBook Air (Late 2010 or newer)
• Mac mini (Mid 2010 or newer)
• iMac (Late 2009 or newer)
• Mac Pro (Mid 2010 or newer)

You can download macOS High Sierra here: https://apps.apple.com/us/app/macos-high-sierra/id1246284741

You can upgrade from: Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion.

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macOS Sierra

macOS 10.12 released September 20, 2016. Final version 10.12.6.
Wikipedia entry

• MacBook (Late 2009 or newer)
• MacBook Pro (Mid 2010 or newer)
• MacBook Air (Late 2010 or newer)
• Mac mini (Mid 2010 or newer)
• iMac (Late 2009 or newer)
• Mac Pro (Mid 2010 or newer)

You can download macOS Sierra here: http://updates-http.cdn-apple.com/2019/cert/061-39476-20191023-48f365f4-0015-4c41-9f44-39d3d2aca067/InstallOS.dmg

You can upgrade from: El Capitan, Yosemite, Mavericks, Mountain Lion, or Lion.

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OS X El Capitan

OS X 10.11 released September 30, 2015. Final version 10.11.6.
Wikipedia entry

• MacBook (Early 2015)
• MacBook (Late 2008 Aluminum, or Early 2009 or newer)
• MacBook Pro (Mid/Late 2007 or newer)
• MacBook Air (Late 2008 or newer)
• Mac mini (Early 2009 or newer)
• iMac (Mid 2007 or newer)
• Mac Pro (Early 2008 or newer)
• Xserve (Early 2009)

You can download OS X El Capitan here: http://updates-http.cdn-apple.com/2019/cert/061-41424-20191024-218af9ec-cf50-4516-9011-228c78eda3d2/InstallMacOSX.dmg

You can upgrade from: Yosemite, Mavericks, Mountain Lion, Lion, or Snow Leopard.

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OS X Yosemite

OS X 10.10 released October 16, 2014. Final version 10.10.5.
Wikipedia entry

• When new, your Mac came with OS X v10.6.8 or later
• 2GB of memory
• 8GB of available storage
• Note: Many features like AirDrop and Handoff will require Macs from 2012 or newer

You can download OS X Yosemite here: http://updates-http.cdn-apple.com/2019/cert/061-41343-20191023-02465f92-3ab5-4c92-bfe2-b725447a070d/InstallMacOSX.dmg

You can upgrade from: Mavericks, Mountain Lion, Lion, or Snow Leopard.

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OS X Mavericks, OS X Mountain Lion and OS X Lion

OS X 10.9, OS X 10.8 and OS X 10.7. Oct 22, 2013, Jul 25, 2012, Jul 20, 2011.

If you have OS X 10.10 (Yosemite) or older, you may be able to find Mavericks in the old version of the Mac App Store from within those operating systems. You can download Mountain Lion for free here. You can download Lion for free here. Also, a DVD of Mountain Lion is available for purchase here: https://www.apple.com/shop/product/D6377Z/A/os-x-mountain-lion.

Your Mac comes with many small apps in addition to the main ones you use every day. Take a look at 10 fun and useful apps to see if any of them can help you get the most from your Mac.

On Tuesday Apple announced a new iMac with a completely new thin design that uses their own M1 CPU. This 24-inch model brings back multiple color choices and can come with a wireless keyboard that includes Touch ID.