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Speed up and optimize all your devices

Download free apps for enhanced performance

  • Get extra speed & faster starts
  • Free up storage space & memory
  • Clean your system & browsers
"One of the best tune-up tools on the market”
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Speed up your Windows PC

Avira System Speedup includes free PC cleaner and optimization tools that help you enhance your system's performance.


  • Startup optimizer helps you speed up your computer's boot time.
  • Power cleaner helps you free up space and tune up your disk.

Optimize your Mac

Avira Optimizer for macOS helps you free up space on your Mac by removing unwanted files, browser caches, and more.


  • Junk cleaner finds and removes unncessary files and browser junk.
  • Duplicate finder helps you get rid of duplicate files and increase storage space.

Optimize your mobile devices

Avira Antivirus for Android and Avira Mobile Security for iOS include performance optimization tools, plus essential security and privacy features. Enhance your mobile device's performance with:


  • Duplicate file finder
  • Memory booster

8 reasons to optimize your devices

Faster starts

More space

Better gaming

More battery

Save money

More privacy

More stability


Faster starts and quicker processing

Avira streamlines the way programs and apps open and run on your device, so you enjoy faster startups and smoother surfing. 

  • Blocks apps that hog your resources
  • Frees up memory
  • Reduces freezing and crashes


Free up storage space

No need to keep buying new hard drives or SD cards. Over time, your storage fills up with junk, temporary, and cached files. Use Avira to take control and clear them out!

Stay mobile for longer

Keep working and enjoying life wherever you are. Squeeze every drop of juice from your battery with a range of smart, energy efficient features. Laptops, tablets, and mobiles – Avira improves battery performance for them all.

Private by design: We don't sell your data.

Unlike most security vendors, Avira doesn't sell your data and never will. Nor do we share your data with 3rd parties such as government, Big Tech or advertising networks.

Made in Germany.
Downloaded by millions.

4.5/5 - Excellent

24,000+ reviews

Learn more about the following

What exactly does a RAM Cleaner do other than clean RAM?

It can speed you up, that’s what! More RAM means that processes run faster. Don’t buy more—clear out what you have…

Find out how our RAM Cleaner speeds up your device

Need to drive performance with our Speed Booster?

PC crawling like a snail? Devices are like car engines. Give them the cleanup and tune-up they need…

Find out how your PC can run like new with our Speed Booster

Want to last longer with our Battery Saver?

Battery icon flashing again? Find out what’s draining it and extend the performance of your mobile devices…

See how to optimize battery life with our Battery Saver

Is it time to clear out the clutter with our Junk Cleaner?

Screen frozen? For more speed, disk space, and performance, take out the trash (like junk files, temp files…)

Free up space and speed up your device now with our Junk Cleaner

Benefits of using Avira's performance optimization tools

Without maintenance, your devices will boot more slowly, and it will take longer for applications to start. As your internal storage fills up with data, you might end up with duplicate or unwanted files. In most cases, hard-to-find junk and temporary files are clogging up many gigabytes of valuable space. Avira's performance optimization tools include PC cleaner and speed up software for Windows, optimization software for Mac, and a wide range of optimization features available in the free mobile security apps for Android and iOS. The performance optimization tools improve the speed, storage capacity, and privacy of your devices. With Avira’s free optimizer, you can extend the lifespan of your device’s battery and get it running like new.

Performance optimization Made in Germany

We have more than 30 years’ expertise in developing cybersecurity solutions and provide our software to more than 500 million users. Besides protecting your privacy and hardware, we also help you to get the best out of your devices. The Avira cleaner and optimizer software deletes junk and hidden files, keeps your hard disk clean, and gives your device an energy boost.

To make your computer boot faster, run smoothly, and load applications quickly, Avira’s free PC cleaner is the software of choice. With just one click, you can ensure a fast startup, improve storage space, and protect your private data. You have a wide range of optimization tools available:


Junk Cleaner: Find and remove junk, temporary, and cached files

Over time your hard drive fills up with unnecessary and unwanted data that decreases the available space for your photos, videos, music, and everything else. With Avira’s free optimizer, you can easily find and remove all cached, temporary, and junk files.


Battery Booster: Longer battery life for laptops and tablets

Many apps will drain your device’s battery and changes in your configuration will also affect battery life. To keep your laptop running for as long as possible, the Battery Booster improves battery performance by efficiently distributing your system’s resources. Depending on what you are doing, you may need maximum performance, a balanced system or maximum battery life. With our smart power modes, your settings are automatically optimized with one click or touch. The Pro version includes additional power modes.


PC Speed Booster: Faster system starts and less freezing

Increase your productivity with a fast-booting device and fast-loading apps. Our free PC cleaner analyzes the system startup, cleans it up, and makes sure your device is as fast as it was when you first got it. Windows users get additional help: Our real-time Hyberboost technology means an up to 25% shorter boot time. Avira’s optimizer also reduces crashes and freezing.


Delete hidden personal data

Safeguarding your privacy is our top priority, and our security software Made in Germany protects your devices whenever you browse the internet. When you visit a website or send an email, many invisible traces will be saved on your device. Your computer, tablet, and smartphone save data such as browser history, call logs, and personal messages. In the wrong hands, this data can be used to create a profile about you. Avira’s device cleaner and optimizer deletes traces of websites visited and known sensitive information held by all your apps.


RAM Cleaner: Delete cache for increased performance and a better gaming experience

Free RAM is important to make sure that games run smoothly and without lag. Play like a pro by using our free cleaning software to optimize the RAM usage of your device, for reduced frame shutter, and a better experience. Our optimizer will free up hard disk space to create more storage space for better gaming.

Avira’s free optimization tools are available for all major platforms:

  • Windows:Avira System Speedup is available for PCs, laptops, and tablets running Windows 7 or later.
  • Android: Avira Antivirus for Android, including performance optimization features, is available for devices running Android 6 or later.
  • iOS: Avira Mobile Security, including optimization features, is available for iPhone and iPad devices running iOS 11 or later.

Avira’s free optimizer gives you access to all key features you need to keep your device running smooth. For enhanced performance, you can upgrade to Pro and benefit from premium features:

  • Deep disk & registry optimization
  • Power optimization for even longer battery life
  • Fully automated system optimization
  • Backup & restoration tools
  • File encryption
  • Customer support

Optimize all your devices for free

Important: Your current Windows version is outdated and no longer supported.
For your security, we recommend switching to Windows 10 before downloading Avira software.
Update your Windows version here.
Wichtig: Ihre Windows-Version ist veraltet und wird nicht mehr unterstützt.
Zu Ihrer Sicherheit empfehlen wir Ihnen den Wechsel zu Windows 10 vor dem Download unserer Software.
Hier können Sie Ihr Windows aktualisieren.
Important: Votre version actuelle de Windows est obsolète et n’est plus prise en charge.
Pour votre sécurité, nous vous conseillons de passer à Windows 10 avant de télécharger le logiciel Avira.
Mettez à jour votre version de Windows ici.
Importante: Tu versión actual de Windows está desactualizada y ya no es compatible.
Por tu seguridad, te recomendamos que instales Windows 10 antes de descargar la solución de Avira.
Actualiza aquí tu versión de Windows.
Importante: La tua attuale versione di Windows è obsoleta e non è più supportata.
Per la tua sicurezza, ti consigliamo di passare a Windows 10 prima di scaricare i software Avira.
Aggiorna la tua versione di Windows qui.
Importante: Sua versão atual do Windows está desatualizada e não tem mais suporte.
Para sua segurança, recomendamos que troque para o Windows 10 antes de baixar o software da Avira.
Atualize sua versão do Windows aqui.
Важно: ваша версия Windows устарела и больше не поддерживается.
Из соображений безопасности перед загрузкой ПО Avira мы рекомендуем перейти на Windows 10.
Обновить Windows вы можете здесь.
Belangrijk: Uw huidige versie van Windows is verouderd en wordt niet meer ondersteund.
Voor uw veiligheid adviseren wij u om over te stappen op Windows 10 voordat u de Avira-software downloadt.
Update uw Windows-versie hier.
Önemli: Kullanmakta olduğunuz Windows sürümü eski ve artık desteklenmiyor.
Güvenliğiniz için Avira yazılımını indirmeden önce Windows 10 sürümüne yükseltmenizi öneririz.
Windows sürümünü buradan güncelleyin.
重要 : 現在お使いの Windows バージョンは古いため、サポートされなくなりました。
安全のため、Avira ソフトウェアをダウンロードする前に Windows 10 に切り替えることをお勧めします。
こちらより Windows バージョンをアップデートしてください
重要信息 : 您当前的 Windows 版本已过时,并且不再受支持。
为了安全起见,我们建议您在下载 Avira 软件之前切换到 Windows 10。
在此升级您的 Windows 版本
重要資訊 : 您當前的 Windows 版本已過時,並且不再受支援。
為了安全起見,我們建議您在下載 Avira 軟體之前切換到 Windows 10。
在此升級您的 Windows 版本