--- 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

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Verified User in Biotechnology
UB
Verified User in Biotechnology
Small-Business (50 or fewer emp.)
"Smoother, Streamlined Apple OS with Great Notifications and iCloud Integration"
4.5/5
What do you like best about Apple OS X Mountain Lion?

I like the notification center as a new feature, iCloud integration, and messaging that replaced iChat functionality. It ran smoother and was visually more streamlined than older Apple OS's, and overall workability improved. Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

Still a relatively older Apple OS. Features could and will be replaced by a rollout of even more modern features, apps, and functionality. Review collected by and hosted on G2.com.

samuel r.
SR
samuel r.
Managing Director
Small-Business (50 or fewer emp.)
"Mountain Lion: The Mac Steps Closer to iOS"
4/5
What do you like best about Apple OS X Mountain Lion?

Released in July 2012, OS X Mountain Lion (10.8) wasn’t a radical redesign—it was a refinement that pulled the Mac deeper into Apple’s growing ecosystem. Borrowing heavily from iOS, it brought iMessage, Notification Center, Game Center, Reminders, expanded iCloud syncing, and the new Gatekeeper security feature. Dictation made its debut, and Safari 6 got a cleaner look with a combined search and address bar.

Performance got a welcome boost: faster boot times, snappier app launches, smoother animations, and better battery life on some MacBooks. But not everyone was thrilled. Some longtime Mac users worried Apple was oversimplifying OS X, dropping support for older machines, and making the OS overly dependent on the still-wobbly iCloud.

In the end, Mountain Lion wasn’t a revolution, but it was a confident, polished step toward Apple’s vision of a unified, seamless experience across all its devices. For Apple fans in 2012, it was a solid 4stars —for purists, it was the start of a very different future for the Mac Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

Here’s the more human, conversational take:

⸻

What I Didn’t Love About OS X Mountain Lion

Mountain Lion was solid, but it had its rough spots. First off, Apple leaned hard on iCloud, and in 2012, iCloud was still like that one friend who swears they’ll be on time but always shows up late—it just wasn’t reliable enough to carry so many new features.

Then there was the hardware cutoff. Perfectly fine Macs from just a few years back suddenly couldn’t upgrade, which felt like Apple saying, “Your computer’s too old… even though it still works great.” Not cool.

The iOS-style makeover also rubbed some power users the wrong way. Sure, iMessage and Notification Center were nice, but it started to feel like the Mac was being molded into a giant iPhone—closed in, less flexible, and a little less Mac.

On top of that, the update didn’t feel like a big leap from Lion. It was more of a “Lion, but with extra iOS sprinkled on top” situation. And Notification Center? Let’s just say the first version was a bit clunky—more like a bulletin board you couldn’t quite organize the way you wanted Review collected by and hosted on G2.com.

Ronald V.
RV
Ronald V.
Consulting Systems Engineer
Small-Business (50 or fewer emp.)
"Mountain Lion Delivers a More Integrated, Secure, User-Friendly Experience"
4/5
What do you like best about Apple OS X Mountain Lion?

Overall, Mountain Lion stands out for strengthening ecosystem integration, improving user experience, and taking meaningful steps toward a more secure operating environment. Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

Some features felt incomplete, and the overall experience seemed overly dependent on Apple’s ecosystem. Review collected by and hosted on G2.com.

RK
Ratish K.
System Administrator
Mid-Market (51-1000 emp.)
"iOS-Style Features, Stronger Security, and Seamless Apple DIOS device Integration"
5/5
What do you like best about Apple OS X Mountain Lion?

What people liked best about OS X Mountain Lion was its iOS-style features, better cloud integration, improved security, and seamless connection between Apple devices Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

The main dislikes about OS X Mountain Lion were performance slowdowns on older Macs, battery drain, compatibility issues, and the heavy influence of iOS features. Review collected by and hosted on G2.com.

Verified User in Computer Software
UC
Verified User in Computer Software
Small-Business (50 or fewer emp.)
"Notification Center and iCloud-Style Integration Make Mac Feel Truly Unified"
4/5
What do you like best about Apple OS X Mountain Lion?

If I had to pick one “best” thing, it would be Notification Center plus iCloud-style integration, because that was the moment the Mac started feeling like part of the same Apple experience instead of a separate platform. Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

Some iOS-ification felt gimmicky, and Mountain Lion was not a huge upgrade. Review collected by and hosted on G2.com.

Verified User in Computer Games
UC
Verified User in Computer Games
Small-Business (50 or fewer emp.)
"iOS Apps on Mac: A Game-Changer with Mountain Lion"
5/5
What do you like best about Apple OS X Mountain Lion?

The best thing about mountain lion is the fact that apple decided to bring some ios apps to mac, if I remember correctly its the os where imessages were available on mac. And I think we were able to use app store to download things which made everything easier and felt a bit more secure. At that point I used it mostly for school so having imessage and a whole new world of apps was a game changer Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

Looking back and comparing it to a more modern OS from apple, UI obviously looks older and the security features did suffice at the time but are measly compared to today Review collected by and hosted on G2.com.

Pintraj K.
PK
Pintraj K.
Devops engineering
Small-Business (50 or fewer emp.)
"Excellent UI Updates—A Big Improvement Over the Previous Version"
5/5
What do you like best about Apple OS X Mountain Lion?

The UI changes are excellent, and it’s much better than the previous version. Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

As of now, there’s nothing I dislike. The updates for the OS have been better so far. Review collected by and hosted on G2.com.

Tamas S.
TS
Tamas S.
QV Analyst
Mid-Market (51-1000 emp.)
"One of the Best Optimized Operating Systems"
5/5
What do you like best about Apple OS X Mountain Lion?

Its one of the best optimised operating systems. Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

It’s a bit confusing first, if you come from an other operating system. Review collected by and hosted on G2.com.

Verified User in Computer Software
UC
Verified User in Computer Software
Small-Business (50 or fewer emp.)
"Still good for revitalizing older Macs"
3/5
What do you like best about Apple OS X Mountain Lion?

This installs and still runs smoothly on older Mac hardware Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

Many newer versions of software no longer support this OS Review collected by and hosted on G2.com.

Verified User in Design
UD
Verified User in Design
Small-Business (50 or fewer emp.)
"Nice Interface and Cool Features Like Group Chat Polls"
4/5
What do you like best about Apple OS X Mountain Lion?

It’s a nice interface and has cool features. Review collected by and hosted on G2.com.

What do you dislike about Apple OS X Mountain Lion?

Its moved things around and may be tricky getting used to. 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