--- title: Apple OS X Mountain Lion Reviews meta_title: 'Apple OS X Mountain Lion Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter 222 reviews by the users' company size, role or industry to find out how Apple OS X Mountain Lion works for a business like yours. aggregate_rating: rating_value: 4.2 review_count: 222 scale: '5' date_modified: '2026-11-04' parent_category: name: IT Infrastructure url: https://www.g2.com/categories/it-infrastructure ---

Apple OS X Mountain Lion Reviews & Product Details

Value at a Glance

Averages based on real user reviews.

Time to Implement

1 month

Return on Investment

19 months

User Insights

Average based on 222 real user reviews.

Implementation Time

1 month

Perceived Cost

$$$$$

Apple OS X Mountain Lion Reviews FAQs

Generated using AI

Last updated: Nov 01, 2026

What is Apple OS X Mountain Lion, and what problem is it built to solve?

Apple OS X Mountain Lion is a Mac operating system that brought Mac use closer to the Apple mobile-device experience. Users describe it as helping connect Macs with iPhones and iPads through synced information, messaging, and notifications.

What company sizes and industries is Apple OS X Mountain Lion the best fit for?

Apple OS X Mountain Lion has the strongest fit with small-business and mid-market environments, with positive use also represented in larger organizations. The industries with the clearest presence include software and IT, along with education.

How long does it take to implement Apple OS X Mountain Lion across a team?

The most common reported time to go live is under one day, so implementation appears quick when the required Mac hardware and software are ready.

What customer support options does Apple OS X Mountain Lion provide, and how do users find the overall support experience?

The support experience is mixed: users describe help as useful and efficient when they reached out, while others report a less satisfying experience.

What tools and platforms does Apple OS X Mountain Lion integrate with, and how do these integrations help users get more value from the product?

Apple OS X Mountain Lion has 2 listed integrations, spanning Apple-device and workplace productivity categories.
  • Apple ecosystem: Apple iOS
  • Workplace productivity: Microsoft 365
These connections fit the product’s use as a Mac platform alongside Apple devices and familiar work tools, supporting a more connected day-to-day workflow.

What features or capabilities could make Apple OS X Mountain Lion even more useful?

The most useful improvements would address compatibility and make the system easier to keep usable on aging hardware.
  • Broaden compatibility with newer applications and devices to reduce friction when software or hardware changes.
  • Extend support for older Macs and provide ongoing security updates for systems that remain in use.
  • Improve performance and stability on older hardware, where slowdowns and application issues can interrupt work.

Is Apple OS X Mountain Lion considered safe and secure for handling data?

Apple OS X Mountain Lion has security controls that users valued, including safeguards around installing software. However, the operating system is no longer supported and does not receive security updates, making it a poor choice for handling sensitive data today.

Apple OS X Mountain Lion Reviews (222)

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Reviews

Apple OS X Mountain Lion Reviews (222)

View 1 Video Reviews
4.2
222 reviews

What do users say?

Generated using AI from real user reviews

Pros & Cons

Generated from real user reviews
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Verified User in Financial Services
UF
Verified User in Financial Services
Mid-Market (51-1000 emp.)
Business partner of the seller or seller's competitor, not included in G2 scores.
"Apple OS user friendly system"
5/5
What do you like best about Apple OS X Mountain Lion?

Apple os is one of the best. I have used both windows as well as apple. Here in Apple, OS X featured are unbeatable as compared to windows. Auto saver is an excellent feature that helps the user to save the doc or edited picture automatically. Also, airplay is the best feature as well as compared with all apple products. Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

The worst feature about OS is that older devices like old apple tv are no longer compatible with this new operating sysytem. Certain like scroll down feature is also very irritating. Review collected by and hosted on G2.com.

Verified User in Higher Education
UH
Verified User in Higher Education
Small-Business (50 or fewer emp.)
"Great OS for Everything"
4.5/5
What do you like best about Apple OS X Mountain Lion?

This Apple OS is quick. New apps and windows open in milliseconds, and apps rarely crash, but when they do, the Force Quit option clears up almost all issues. I rarely find myself having to restart the OS to ensure app stability and efficiency. I really like that you can have multiple "desktops" open with different apps and windows. Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

I would like more options for multitasking and rearranging windows among one desktop. I would also like built-in FaceTime and iMessage capability so that I can seamlessly move from iPhone to Mac. Some apps (mostly games) will not run natively on Apple OS. Review collected by and hosted on G2.com.

Shay M.
SM
Shay M.
H
Small-Business (50 or fewer emp.)
Originally submitted 4/30/2021
"Great OS for anyone"
4.5/5
What do you like best about Apple OS X Mountain Lion?

Easy to use, not buggy, a significant improvement over previous updates, increased functionality over the last update Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

Many people say battery life has improved, but for me, my battery life has gotten worse. Review collected by and hosted on G2.com.

Collin M.
CM
Collin M.
Customer Experience and Marketing Manager
Mid-Market (51-1000 emp.)
"Good operating system, but far outdated"
3/5
What do you like best about Apple OS X Mountain Lion?

I found that this system was very stable and clean. Also, it came with a suite of creative products that I found were really really fun and useful. I used I movie a number of times for presentations, and started making music with Garageband. Also, one feature of Apple hardware is that generally when using USB equipment, there is no need to install a driver, which makes setup for external equipment very easy and stress free. This was especially good while working with end users at the IT help desk. Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

It's very outdated in the year 2021. At this point, there are far, far more recent operating systems that can run on the same equipment. One of the things that I didn't like it about the time (and is likely still true) is that it couldn't run much of the Windows proprietary software that I wanted to use, and additionally only ran on more expensive (apple) hardware, rather than on the more cost effective windows machines that I found were available. Review collected by and hosted on G2.com.

Mireya W.
MW
Mireya W.
Content Moderator
Enterprise (> 1000 emp.)
"Snappy, great work OS, intuitive controls, offers many solutions for everyday utility"
5/5
What do you like best about Apple OS X Mountain Lion?

I like the ease of use for the user. It makes it very simple to navigate and manage all the programs and files on the computer. Everything is snappy and reaction time is near instant in most cases. Not very related to the software itself but I do enjoy that it is based on a cat. I also enjoy how quickly my peripherals connect. I simply have to take out my wireless headphones and by the time I put them in my ear, they are paired and ready to go. I love that it offers so many features for everyday utility. Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

I dislike how the font has changed and things have become rounded at the edges, this is just aesthetic/personal preference for the most part though. I do find it difficult to navigate the landscape of the OS when things move or steps are taken away/added to how things were done before. It doesn't make sense to me that there is not some kind of tutorial or walkthrough after an OS update to guide users through and make sure they have a pleasant experience. Review collected by and hosted on G2.com.

Verified User in Hospital & Health Care
UH
Verified User in Hospital & Health Care
Small-Business (50 or fewer emp.)
"Very fast and improved experience - cost is super justified!"
4/5
What do you like best about Apple OS X Mountain Lion?

Mountain Lion definitely loads all programs very quickly, operates at a faster speed, and enables me to nimbly move across my laptop with multiple apps, windows, and tabs all open and running synonymously. It has my older device running like new! I was wary about making the purchase given the price, but I feel my return on investment has been ten-fold! Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

Mountain Lion took a very long time to download but I will say it was worth the wait! It could have also been my device so I'm not sure I'd entirely blame the software update for this. Review collected by and hosted on G2.com.

Gary G.
GG
Gary G.
Concierge Technology Consultant
Small-Business (50 or fewer emp.)
"Keep Your Macs Updated"
5/5
What do you like best about Apple OS X Mountain Lion?

Mountain Lion was the latest step in the evolution of the MacOS. Things are snappier and more refined. Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

Everything seems to be working well, with no complaints. Review collected by and hosted on G2.com.

AHolland L.
AL
AHolland L.
Research Technician/Lab Manager
Small-Business (50 or fewer emp.)
"I miss mountain lion!"
5/5
What do you like best about Apple OS X Mountain Lion?

I loved mountain lion. It was an excellent software that didn't have too many frills and lovely things to make the computer slow and complicated. Still, I could also use it for more complex coding projects, such as analyzing data from a CRISPR screen that our lab had conducted. I think the interface is just beautiful and well-organized. I will always be a Mac person! Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

The only aspect of Mountain Lion that is sub-par is the web browser, Safari. I don't use the safari because it isn't very functional compared to other browser options such as Mozilla Firefox and Chrome. Maybe if I spent a bit more time on it, I wouldn't be as annoyed with it when it doesn't do what I want it to, but I gave up on it a long time ago. Review collected by and hosted on G2.com.

Verified User in Commercial Real Estate
UC
Verified User in Commercial Real Estate
Mid-Market (51-1000 emp.)
"I have been using Apple OS X Mountain Lion for more than 4 years and I highly recommend to use it."
4.5/5
What do you like best about Apple OS X Mountain Lion?

I love almost everything. The OS is fast enough. Takes less memory to open a app. Cool design. No memory issues. Battery life is longer. I highly recommend using this OS. Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

Sometimes my laptop gets overheated; not sure if it is because of OS. Review collected by and hosted on G2.com.

Verified User in Education Management
UE
Verified User in Education Management
Small-Business (50 or fewer emp.)
Originally submitted 1/4/2022
"Apple OS X Mountain Lion has a great user interface."
4/5
What do you like best about Apple OS X Mountain Lion?

I love how simple it is to use. I also love the graphics. Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

I do not think that there are any downsides. Review collected by and hosted on G2.com.

Questions about Apple OS X Mountain Lion? Ask real users or explore answers from the community

Get practical answers, real workflows, and honest pros and cons from the G2 community or share your insights.

GU
Guest User
•
Last activity almost 3 years ago

Is OS X Mountain Lion free?

Abdillah Z.
AZ
Abdillah Zarkasy
•
Last activity over 5 years ago

better this app is updated to increase capacity

Pricing Insights

Averages based on real user reviews.

Time to Implement

1 month

Return on Investment

19 months

Perceived Cost

$$$$$
Apple OS X Mountain Lion Comparisons
Apple OS X Mountain Lion Features
RAM management
I/O management
Data backup
System operations monitoring