In my experience, Fortect is not very good at what it does. While Fortect was only released last year, it is not actually a new product. It's a rebrand of Restoro, which was a rebrand of Reimage. Due its terrible reputation, the publisher changes the name from time to time.
Here's some background information. Reimage was released in 2008 and was a revolutionary app. It was designed to be able to fix issues with Windows, by replacing corrupted system files with working ones and fixing registry issues. They had a large collection of system files on their server, that they used to replace corrupted ones. It did not have a registry cleaner, but was able to fix some problems in the registry, rather than blindly deleting so called registry errors. Just deleting unneeded registry keys, rarely fixes any issues, as explained in the following link.
Registry 101 & Why Your Registry Cleaner is Useless
At the time that link was published, Reimage did not include a registry cleaner, although Fortect does have one. The name Reimage came from the fact that it could potentially fix issues with Windows, saving you from having to reinstall it. While Reimage wasn't cheap to buy, it was a unique concept. It's worth noting that it was originally never promoted as a tool to boost performance, but as a repair tool. They even released a bootable version you could use to possibly fix an unbootable version of Windows.
Revolutionary XP Repair tool that identifies and replaces broken system software, leaving user data intact
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Here are some more links which are worth reading and also a review, which shows that originally at least, Reimage worked well.
Learn about how Reimage Windows repair works and what it does to fix your Windows XP, Windows Vista and Windows 7 operating system.
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Reimage PC Repair Blog covers Reimage user stats, PC tips and tricks, PC advice from our professional PC experts as well as Reimage software news.
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Reimage performs nearly miraculous repairs of damaged Windows installations.
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As for Fortect, based on me testing it on several PCs, it seems that it lacks the repair functionality that Reimage originally had, despite the claims on their website. It has a registry cleaner, which is something that was originally included in Reimage, but I'm not too sure if there still is the ability to actually fix problems in the registry. It also does not seem to be able to fix corrupted system files, but perhaps it can. It also supposedly can fix crashed programs, but I'm not too sure if it actually can do that either. There's also a driver updater, which is a new feature and one that I don't recommend using, as it doesn't do a very good of finding the correct drivers. While Fortect is owned by Kape Technologies who also publish the driver updater DriverFix, Fortect finds different updates to DiverFix.
While in theory you have to pay to use Fortect, you can use it for free. You have to pay for fix all found issues at once, but you can repair individual sections for free. While it gives you the option to start a 24 hour free trial, you can continue to fix issues for free after the 24 hours. It asks for an email address to start the trial, but it you can continue without entering one.
I applied to join their beta program a few months ago, but never received a reply. Based on some Googling a few months ago, some, if not all, of the original people who worked for Reimage left after a few years. It was only after a few years, that Reimage started being advertised aggressively and bundled with other software, leading to it being classified as a PUP.