A full-powered Mac antivirus app must be able to root out any existing malware residing on your Mac and defend against all future attacks. That’s the minimum. And that’s exactly what K7 AntiVirus for Mac does—the minimum. It doesn’t even include browser-level protection against malicious and fraudulent websites. With its Windows equivalent, you get a firewall, vulnerability scan, exploit protection, and more. Not on the Mac. Sure, K7 costs less than the competition, but for the most part, it also does less. You should strongly consider paying a little more and getting more with one of our Editors’ Choice winners, Bitdefender Antivirus Plus or Norton AntiVirus Plus.

How Much Is K7 AntiVirus for Mac?

Just as with Windows antivirus tools, there are two main pricing clusters for a single-year Mac antivirus subscription, one around $40 and one around $50. ESET Cyber Security for Mac, G Data Antivirus, and Trend Micro Antivirus are in the first group, while Bitdefender Antivirus Plus, Intego Mac Internet Security, and Webroot are in the second. Also, as with Windows antivirus apps, K7 undercuts the typical price by quite a bit.

You pay $25 per year for a one-Mac K7 subscription or $32 to protect a pair of Macs. Three- and four-device subscriptions cost $38 and $44, respectively.

Not many competitors offer so many different price points, but many include a five-device subscription in their pricing. K7’s $57 price for a five-pack still undercuts the rest, but not by as much. With ESET, you can protect five Macs for $59.99, just a few dollars more. The average price for a five-pack is nearly $90.

Interestingly, the Windows edition, K7 AntiVirus Premium, costs considerably less than the Mac edition. At all tiers, it runs about 60% of the Mac price. For example, a single-device license costs $15 per year, and a five-license pack goes for $34. I’m not sure why, given that the Windows edition includes many bonus features not supplied in the Mac edition.

Windows 10 hits end of life this fall, but millions of PCs are still running it. You can even find PCs relying on officially dead Windows 8 and 7. Mac users, on the other hand, mostly stay up to date with new releases, though some like to wait for any bugs to shake out. It’s not uncommon for antivirus apps to support only the latest few iterations of macOS. For example, Sophos Home Premium and Webroot support Monterey (12) and later, while Norton AntiVirus Plus requires Ventura (13) or newer. K7, by contrast, supports macOS versions as far back as Yosemite (10.10). Even if ancient hardware means you’re stuck with an ancient macOS version, K7 should be compatible.

No Scores From Independent Testing Labs

Supplementing my hands-on testing of Windows antivirus apps, I monitor reports from four independent antivirus testing labs around the world. Two of those labs also evaluate and report on macOS antiviruses.

AV-Test Institute rates Mac antivirus tools the same way it does for Windows and Android. Each app can earn up to six points each for protection, performance, and usability, for a max score of 18 points. The examiners at AV-Comparatives assign Standard certification to Windows antivirus apps that reach certain minimum requirements, and reward those that go beyond the basics with Advanced or Advanced+ certifications. On the Mac, AV-Comparatives simply reports the apps that achieved certification, along with the percentages they caught of various malware types.

Unfortunately, not many antivirus companies participate in Mac-centric antivirus testing. Fully 60% of the Mac antiviruses I track don’t appear in reports from either lab. K7 is one of those. Avast One Gold, AVG, and Norton participate in testing with both labs, and all three earned 18 points from AV-Test and 100% from AV-Comparatives.

Easy Installation, Speedy Scan

Getting K7 installed on your Mac could hardly be easier. Download the file, run the installer, and activate protection, either by using a registration code you purchased or by selecting a 30-day trial. Give it the necessary whole-disk access permission and you’re ready to go. For this review, I used a free trial installation.

(Credit: K7/PCMag)

This app’s main window is a study in simplicity. Four panels down the left side let you scan the whole computer, scan your personal files, put a specific folder through the antivirus scan, or configure a scanning schedule. A simple menu across the top lets you choose Scan View, Quarantine, History Log, Preferences, or Help. The rest of the window is devoted to antivirus status.

When I clicked for a full scan, K7 raced through it, checking several hundred thousand files in five minutes. That’s among the fastest full scan times for antivirus apps. K7 doesn’t offer a quick scan as such, but when the full scan is so speedy, it hardly matters.

(Credit: K7/PCMag)

On the Scan View page, you can see a rundown of available scans, scans you’ve performed, and scheduled scans. The scheduler lets you create multiple tasks to run daily, weekly, or monthly.

(Credit: K7/PCMag)

No Protection Against Phishing Frauds

Actively defending against malware attacks is a core capability, but many antivirus apps take the fight upstream, diverting your browser away from websites that host malicious apps or attempt to scam you and steal your passwords. About three in four Mac antivirus programs include some sort of browser-level protection, but K7 is among the one in four that don’t.

It’s true that all popular browsers include some form of phishing protection, but as you can see from the chart, they’re not as effective as the best antiviruses. In testing, AVG AntiVirus, Avira Free Antivirus, McAfee, Norton, and Webroot all detected 100% of the real-world phishing frauds.

No Detection of Windows Malware

A program that’s written and compiled to run on macOS won’t run under Windows, and vice versa. Without an elaborate system of OS emulation, you just can’t run a Windows program on your Mac. On the plus side, that means the sea of malware programs designed to attack Windows also won’t run on your Mac.

Even so, most Mac antivirus apps try to eliminate any Windows malware they see. This eliminates the possibility that the file in question might somehow get transferred to a Windows box, where it would be dangerous.

To check this feature, I use a very simple test. I copy all my malware samples to a thumb drive and mount it on the test Mac. If the antivirus doesn’t scan it automatically, I trigger a manual scan and note how many samples get eliminated.

(Credit: K7/PCMag)

Webroot Essentials, Avast, and McAfee Total Protection all quarantined more than 90% of the samples in their latest tests. The overall average is about 75%. As for K7, it simply doesn’t try to detect Windows malware. It happily scanned the drive full of samples and reported no threats found.