Best Registry Cleaner for Windows 10 (Updated 2021)
After using your PC for some time, you may start feeling as if it has gotten ‘older.’ It starts booting slower, loading applications for longer, etc.
However, PC hardware lasts far longer than most people think, and the issue is not with your hardware but with your registry.
What is the registry?
Windows registry is a database that keeps the information about settings, user-preferences, hardware devices, and operating-system configurations. For example, when you install a program, a new subkey is created in the registry. When you set your preferences on the program, new entries are added.
The constant update however means that the registry can quickly become clogged with information. Some of this information may no longer be necessary, and some of it may be erroneous and can even cause crashes. This is where registry cleaners come in.

Why you need a registry cleaner
Windows registry is one of the most important parts of any computer system as it affects system performance, reliability, and even stability. Maintaining it is therefore important to optimize your PC.
Registry cleaners help accomplish this by:
The registry is however a sensitive part of your PC that should not be messed around with unnecessarily. Further, you also need to be careful about the registry cleaner that you decide to use – some may end up messing with your operating system.
Luckily, we have done the hard part for you and reviewed the best registry cleaner software. The brands reviewed here are the best in the market, and we’ll go through each of them in detail. You can find a fit whether you are looking for a simple interface, free product, additional useful tools, or you run an old version of Windows.
Top 10 Best Registry Cleaners for Windows 10
1. Iolo System Mechanic

Iolo System Mechanic is one of the best PC utility tools, and it tops our list of the best registry cleaners. The utility software is more than just a registry cleaner as it provides PC care, cleans your device, speeds it up, and protects it. It promises 89% faster startup, 39% faster downloads, 17% improved CPU speed, and 8.6% improved graphics.
This is made possible through several features:
Once you install the Iolo System Cleaner, you will get two scan modes: Quick scan and Deep Scan. The quick scan provides a brief report with several errors and then offers a one-click fix. The deep scan on the other hand provides a full report that organizes errors into categories and then provides explanations and tips.
One of the best features of the Iolo System Mechanic is that it has a built-in backup center. This allows users to roll back any changes that they have made in case of any system errors.
Free Trial & Pricing
System Mechanic has a free version that allows users to perform a quick scan and repair several issues. The premium version costs $39.96, and it comes with a 1-year whole-home license.
Pros
- Attractive & easy-to-use interface
- Detailed reports
- System backup
- Additional useful tools
- Smooth scanning & quick analysis
- Whole-home licensing
Cons
- Registry cleaning is part of the deep scan
- The free version is very limited
2. IObit Advanced SystemCare

IObit’s Advanced Systemcare is another of the best registry cleaners, and it doubles as an optimizer as well as a data protection utility. The utility software has a well-structured and attractive interface that is easy to navigate even for the most basic user.
Some of the features you will get from the solution include:
IObit’s Advanced Systemcare is compatible with all Windows operating systems. It also features more than ten areas of PC optimization to ensure your computer runs at its best.
Free trial & Pricing
The Advanced SystemCare solution by IObit is available in two versions: There is a free plan with limited functionality and a premium plan that comes with advanced features. The premium version costs $19.99.
Pros
- Simple and clean interface suitable to users that aren’t tech-savvy
- One-click scan and repair mode
- 12 different target areas of optimization
- Active and real-time monitoring
Cons
- Its many features can be overwhelming
3. CCleaner

The CCleaner solution by Piriform is a strong contender for the best registry cleaner. Alongside Iolo System Mechanic, it is among the best computer optimization freeware.
It comes with an inbuilt registry cleaning function that does what is expected. Further, it has a sharp and neat user interface that contributes to the software’s overall ease of use.
Below are Ccleaner’s best features:
Unlike other registry cleaners, the Ccleaner tool is presented as an installable tool and a portable tool. The latest Ccleaner version is supported on all Windows operating systems higher than Windows 7.
There is also a macOS software that is compatible with macOS 10.8 and higher.
Free trial & Pricing
Like the other two solutions above, Ccleaner comes in two versions. Their free version is however one of the best you can opt for as it has a lot of free features. The pro version is available in two plans – $19.95/year for 1 PC and $29.95/year for 3 PCs. There’s also an option for businesses.
Pros
- Ideal for beginners
- Optional backup
- Several PC maintenance tools
- Available as a portable software
- Automatic software updates
Cons
- Annoying, incessant pop-ups
- Does little to boost computer startup time
- May ask you to install an extra software
4. SysTweak RegClean Pro

It not hard to see why SysTweak RegClean’s solution finds itself next on our list once you know what it has to offer. The tool is designed to clean, fix, and optimize your Windows registry in a simple and efficient manner.
SysTweak RegClean Pro also corrects the invalid registry entries present from outdated files and programs, thereby improving PC performance.
Here are the features you’ll find on the tool:
We also love that RegClean pro has a great interface that both experts and amateurs will find easy to deal with. The tool is compatible with all Windows operating systems, including and higher than XP (32- & 64-bit architectures).
Free Trial & Pricing
The paid version of the award-winning registry cleaner is available at US$ 39.95, and it comes with the Systweak PhotoStudio v2.1 tool for free. You can alternatively download and use the free version that is also available on the website.
Pros
- Scheduler option
- Registry defrag
- Registry back-up & restore
- Customized scans
- Exclusion list
- Plenty of other useful features
Cons
- It is pricey
5. Auslogics Registry Cleaner

The Auslogics Registry Cleaner is not only one of the best registry cleaners but also one of the easiest to use. It provides users with a convenient way of doing repairs to the registry using a categorized view that is much like a list form.
Here, you can select the areas that you want to clean and repair. While the tool’s interface is not as appealing as other cleaners like Wise Cleaner, the tool does get the job done.
Auslogics also helps deliver a smooth and fast browsing experience by adjusting internet connection settings.
Here are the features that make the tool one of the best:
The tool is compatible with both 32- and 64-bit architecture of Windows 7 and higher. It can also be used in PCs running 32-bit versions of Windows XP & Vista.
Free Trial & Pricing
You can choose to go with the freeware version that comes with an ultra-fast scanning engine and does registry check-up and other essential repairs. To get additional features like notification settings control and priority support, you’ll need the pro version. For $9.98, you get three PC licenses of the pro version for one year.
Pros
- Takes a convenient approach to identifying and fixing registry issues
- For most PC users, the freeware version is enough to get the job done
- Gives you full control to choose what you want to delete
- Has a straightforward interface that is easy to use
Cons
- Often installs other unwanted software
- The in-depth optimization feature is limited to the pro version
6. Wise Registry Cleaner

If only visual appearance counted, then Wise Registry would easily be among the top three registry cleaners. Unfortunately, there’s more to a reliable registry cleaner than how it appears. That, however, doesn’t mean Wise Registry Cleaner is not good. On the contrary, it is a great tool for managing your registry entries, and that’s why it has earned a position in our list of the best registry cleaners.
The utility software presents you with two scanning modes: fast scan and deep scan. Users can also run the scans from the command line. After running a scan, the tool will categorize the detected errors conveniently to make it easy to start repairing.
Other Wise Registry Cleaner features include:
The Wise Registry Cleaner is available as an installable software and a portable one. You’ll notice a skippable push notification during the installation asking you to download Wise Disk Cleaner, but that shouldn’t be a problem. The registry cleaner is compatible with all PCs running Windows XP and higher.
Free trial & Pricing
Wise registry cleaner’s paid version costs $29.95 and comes with a 60-day money-back guarantee. There is also a free version of the program.
Pros
- Three scan levels – normal, safe, and deep scan levels
- Not only cleans the registry but also optimizes system settings for better performance
- Comes with plenty of features, including the command line option
- All-around the clock customer support
Cons
- Will try to install another program
- Requires rebooting when making changes
7. JetClean

BlueSprig’s JetClean is one of the few genuinely free, albeit reliable registry cleaners you can find out there. It has a well-designed and clean interface that makes navigation easy.
JetClean has a portable and installable version of the software, although there is a catch. The portable version is not available directly, and you need to generate it from the installable version.
Here are the features you can expect from JetClean:
JetClean Registry cleaner is compatible with all Windows operating systems.
Free Trial & Pricing
As mentioned above, this is the first free registry cleaner on our list. You can download the software from BlueSprig’s official website.
Pros
- Well-designed interface
- Has a portable version
- All-round registry cleaner
Cons
- The amount of cookies the software regards as important are way too many
- Attempts to install a toolbar during the installation process
- A portable version can only be obtained after installation
8. JV16PowerTools

Unlike other standalone registry cleaners, JV16PowerTools is a set of optimization tools that feature a registry cleaner component. Other tools in the set are startup optimizer, windows anti-spy, file cleaner, registry compactor, history cleaner, and software uninstaller.
Jv16PowerTools allows you to save scanning results in different formats, and you can also choose to print out the scan results. The program has a separate registry editor section where users can manage the registry errors detected.
Some of the features in the program include:
JV16 PowerTools is compatible with PCs running Windows SP, Vista, 7, 8, and 10. While the program comes with several components, it can be a challenge for users that love straightforward registry cleaners.
Free trial & Pricing
The program comes with a 14- day free trial that doesn’t require you to provide your credit card details. After the free trial, you can sign up for any of the plans offered. The yearly plan costs $16, the 2-year plan goes for $29.9, and the lifetime plan costs $39.95. All plans support up to 5 computers.
Pros
- Automatic registry backup
- Doesn’t attempt to install other applications
- Features a websites blacklist
- Can be used in different languages
Cons
- It is not as user friendly as other registry cleaners
9. Defencebyte Computer Optimizer

Computer Optimizer is developed by Australia-based company defencebyte. It comes with a registry cleaner tool coupled with other tools.
The cleaner tool helps users fix their system software, startup entries, shared libraries, fonts, and virtual devices.
Here are some of the optimizer’s best features:
Supported operating systems include Windows XP, Vista, 7, 8, and 10.
Free trial & Pricing
The pricing period is yearly, and the amount varies depending on the number of PCs you’d like to use it on. The pricing starts from $38.95 for 1 PC to $181.95 for 10 PCs. defencebyte offers a 15-day free trial version and a 30-day money-back guarantee.
Pros
- Delivers fast and accurate performance
- Features additional tools in the program
- Has a 15-day free trial
- Has a money-back guarantee
Cons
- Expensive plans
- Can be hard to configure and use sometimes
10. AML Registry Cleaner

AML cleaner is a simple PC cleaner software that fixes Windows registry problems to make the PC run efficiently. The utility software is quite good at cleaning common junk files that accumulate over time.
Here are the features the cleaner packs:
The program’s interface is ‘old,’ but as a trade-off, the cleaner packs a solid registry search tool. AML registry cleaner supports both 32- and 64-bit versions of all Windows operating systems (Windows XP, 2003, Vista, 7, and 8).
Free trial & Pricing
The AML registry cleaner software is available for free and can be downloaded from the official AML website.
Pros
- Has a basic interface that is easy to use
- It is free
- Gives you the option to search for words in the registry
Cons
- It lacks a backup feature
- Some users might find its interface outdated
- It doesn’t support Windows 10
Trends & controversy of registry cleaners
While reading about registry cleaners, you will definitely come out across statements such as “they do more harm than good,” “they do not do much to boost performance,” etc. Such has led to skepticism about their importance.
However, registry cleaners can be quite beneficial especially when your PC is slowing down or has errors. The problem comes in that most of the products out there are not good enough, and there are lots of rogue PC utilities too.
To reap the most out of a registry cleaner, opt for a highly rated product, preferably one that is not free. The guide above should be quite beneficial.
Frequently Asked Questions
What is a registry cleaner?
A registry cleaner is a utility software designed to help remove redundant items and correct errors in the Windows registry. It also performs several other registry maintenance tasks that boost system stability, reliability, and performance.
Can I clean the registry without a software?
You can, but do not attempt it. Windows registry is like the nerve center of your PC, and messing with it can easily lead to errors.
Does Microsoft provide a registry cleaner?
Microsoft does not provide a registry cleaner, and so you have to rely on third-party software. The above list features the best registry cleaners in the market.
What causes a Windows Registry error?
Registry errors can be caused by improper shutdowns, viruses/ malware, multiple entries, orphaned entries, and a fragmented registry, among others.
Why buy a registry cleaner when there are plenty of free alternatives?
Most free registry cleaners can introduce adware, spyware, or viruses to your PC. They can also install other programs and toolbars without exclusively stating it during installation. And although the free options listed above are reliable, they offer minimal functionalities.
Conclusion
When you start getting frustrated with your computer’s performance, the solution doesn’t have to be purchasing a new computer. With the tools above, you can easily perform any required cleaning tasks and solve all registry errors. The tools we have listed are the best in the market, and so you can choose the one that fits your needs best.