MacKeeper is a utility software suite for macOS . The software distributor, Kromtech Alliance , states that MacKeeper secures, cleans, protects and optimizes a system . The product has received mixed reviews. It has been widely criticized and is difficult to fully uninstall. It is strongly promoted through aggressive advertising and affiliate marketing . MacKeeper faced a class-action lawsuit because the company allegedly deceived users into paying for fixed unneeded. The lawsuit was settled in 2015 for US $ 2 million  with noadmission of guilt by the company.
As of 2015 , three major versions of MacKeeper had been released. The first beta version, MacKeeper 0.8, was released on 13 May 2010.  MacKeeper 1.0 was released on October 26, 2010.  MacKeeper 2.0 was released on January 30, 2012 at Macworld – iWorld with an expanded number of utilities related to security, data control, cleaning and optimization.  Kromtech Alliance Acquired from MacKeeper Zeobit in April 2013.  MacKeeper 3.0 Was released in June 2014 as software as a service with a new “human expert” feature and optimization with OS X Yosemite .  
MacKeeper was first developed in 2009 by Zeobit . In April 2013, Zeobit sold MacKeeper to Kromtech Alliance Corp.   Kromtech was closely affiliated with Zeobit in Ukraine and hired many former Kiev-based Zeobit employees.  In December 2015 security researcher Chris Vickery discovered a public accessible database of 21GB of MacKeeper user data on the internet, exposing the usernames, passwords and other information of over 13 million MacKeeper users. According to Kromtech this was the result of a “server misconfiguration” and the error was “fixed within the hours of discovery”. 
MacKeeper integrates Avira anti-malware scanning engine and according to PC World, Avira’s Mac security product is free.   The filesystem-level encryption tool can encrypt files or folders with a password. The data recoveryutility allows users to recover unintentionally deleted files.  A backup software is also included, which can copy files to a USB flash drive , External HDD or FTP server . The data erasure allowded users to Permanently delete files ALTHOUGH PC World Argues That this feature duplicates the secure empty trash feature formerly built intoOSX .  The disk cleaner finds and removes junk files on the hard drive in order to free up space. 
Version 1 and 2
The earlier bundles received the reviews of the software. Macworld gave MacKeeper 3.5 out of 5 stars in August 2010, based on the 0.9.6 build of the program, and found it a reasonable priced set of tools but experienced lagging while switching between tools.  MacLife rated it at 2.5 out of 5 and said it was most likely that it would not be useful.  AV-Comparatives found that MacKeeper had an excellent ability to detect Mac-based malware . They commented that it was “very good to have a good understanding of security issues, but not ideal for non-expert users who need pre-configured optimal security for their Macs.”  OPSWAT awarded the program a Gold Certification for protecting users against anti-phishing attempts and spyware and malware.   Zeobit claims that negative attacks were launched against MacKeeper by an unnamed competitor, and that many users were confusing MacKeeper with another application. 
Reviews of the latest software version has been greatly negative. A May 2015 test by PC World found MacKeeper That APPROBATION the need for extensive corrections are brand new fully patched machines.   In December 2015, Business Insider and iMore have suggested to avoid the product and not install it.   Top Ten Reviews has removed MacKeeper from its top 10 ranking of the results of the search for malware. 10.  A July 2017 AV-TESTThere have been 85.9 percent of the tested malware.   MacKeeper has been criticized for being very difficult to uninstall,     and a potentially unwanted program .   MacWorld argues various reports have erroneously suggested MacKeeper is a scam or at worst malware.  Sophos anti-virus vendor reported Mackeeper as 2017’s most prolific unwanted program on the Mac. 
Multiple reviewers have criticized Zeobit’s marketing and promotional techniques.   Kromtech buys upwards of 60 million ad impressions, making it one of the largest buyers of web traffic at Mac users.  Zeobit has been accused of employing misleading advertising with regard to its promotion of MacKeeper, including aggressive affiliate marketing , pop-under ads, and planting sockpuppet reviews .  Some MacKeeper advertisements pose as online malware scanners claiming to have found malware on a user’s computer and prompting the user to download a removal tool, which is actually the MacKeeper setup wizard.  Kromtech has also had issues with affiliate advertisers, attracted by the 50 percent Kromtech country commissions for sales of MacKeeper, who’ve wrapped MacKeeper ads into adware. 
In January 2014 a class action lawsuit was filed against Zeobit in Illinois .  The lawsuit asserted that “neither the full trial nor the full version of MacKeeper performed any credible diagnostic testing” and reported that a consumer’s Mac has been in need of repair and has been at-risk due to harmful error.  In May 2014 the lawsuit was filed against Zeobit in Pennsylvania , alleging that MacKeeper fakes security problems to deceive victims into paying for fixed taxes.  As of May 2015, the case in Pennsylvania is close to being settled. Under the settlement terms, Zeobit would put $ 2 million into a fund for those who want a refund, but admitted no fault. On August 10, 2015, US $ 2 million .  Customers who bought MacKeeper before July 8, 2015, can apply to get a refund. 
Kromtech aussi filed at least two unsuccessful lawsuits contre it perceives Those are defaming em. In July 2013 Kromtech filed a lawsuit against Macpaw, the developers of CleanMyMac . Kromtech alleged that Macpaw employees created several usernames and posts on several websites defaming the MacKeeper software.  The case was dismissed before the hearing.  In July 2014, Kromtech filed a lawsuit against David A. Cox alleging that he defamed Kromtech by calling MacKeeper a fraudulent application in a YouTube video. The judge dismissed the case for lack of personal jurisdiction. In July 2016, Kromtech sent a letter to Luqman Wadood, a 14-year old technology reviewer for harassment and slandering the MacKeeper brand in a number of YouTube videos. Luqman claimed the videos were diplomatic. 
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