With the growing reliance on smartphones in daily life, keeping the device running efficiently has become essential. One of the most common problems faced by users is slowness, often caused by the accumulation of unnecessary files and a lack of free storage space. Fortunately, there is a practical solution: apps dedicated to cleaning and optimizing your phone's memory.
These apps eliminate unnecessary files, clear the cache, and help identify what's taking up space unnecessarily, which usually translates into a noticeable improvement in daily use. Before proceeding, an important warning: several popular "cleaners" have been removed from Google Play and should no longer be installed. The five apps below were checked in the Brazilian store and remain officially available.
Best apps for memory optimization
1. Google Files
Google Files (com.google.android.apps.nbu.filesThis is the most straightforward cleaning app on the list and also the easiest to recommend. With a simple interface, it scans your storage and suggests what to delete: temporary files, duplicate images, memes and stickers received in conversations, large videos, and apps that haven't been opened in months. Each suggestion shows how much space will be freed up before you confirm.
It combines file manager functions, allows you to send items directly to Google Drive, and transfers files between nearby phones without consuming mobile data. On the Play Store, the listing doesn't show the "Contains ads" or "In-app purchases" labels—it's truly free, without advertising or in-app purchases. It's only available for Android.
2. CCleaner
CCleaner – Cell Phone Cleaner (com.piriform.ccleaner, (from Piriform) is widely recognized when it comes to cleaning and optimizing mobile devices. In addition to removing unnecessary files, it allows for application management, helping to identify and remove rarely used programs that occupy valuable space. A dashboard displays memory and storage usage, making it easy to track the results of the cleanup.
It's worth knowing how the app is funded: the listing on the Play Store includes warnings such as "Contains ads" and "In-app purchases," with items ranging from R$2.70 to R$199.99. Manual cleaning is free, with advertising; automatic and scheduled cleaning are part of the paid plan. CCleaner for mobile is available on Android and also in the Brazilian App Store.
3. SD Maid 2/SE
SD Maid 2/SE (eu.darken.sdmse, (from developer darken) is designed for those seeking a deep clean. It not only deletes residual files, but also searches for the "corpses" left by uninstalled applications, finds duplicates, and includes a file manager to organize what's left. One of its most useful aspects is the ability to compact system databases, which helps with data access.
Everything is presented in reviewable lists: nothing is removed without you seeing what is being removed. The store listing does not have an ad label and states "In-app purchases," from R$ 5.99 to R$ 11.99, to unlock advanced features. An important detail: the old version, SD Maid 1, is still listed on the Play Store, but it has stopped receiving updates — always prefer version 2/SE.
4. AVG Cleaner
AVG Cleaner (com.avg.cleanerThis app is developed by AVG Mobile, from the same group as Avast. It stands out for combining memory cleaning, photo management, and a battery usage panel per app. The image scan automatically identifies low-quality, blurry, or duplicate photos, helping to free up space with just a few taps.
The listing on the Play Store shows "Contains ads" and "In-app purchases," with prices ranging from R$ 1.29 to R$ 214.99 — the free version is supported by advertising. If you already use Avast Cleanup, there's no point in installing both: the purpose is practically the same.
5. Norton Cleaner
Norton Cleaner (com.symantec.cleansweep, (published by NortonMobile) offers a lean approach to memory cleanup. It efficiently removes residual files and application cache, groups similar photos, and helps organize and remove rarely used programs, all in a minimalist interface with no alarming alerts.
It's one of the few popular cleaners without the "Contains ads" label; the listing only shows "In-app purchases," ranging from R$ 5.99 to R$ 119.00. Note that this is the brand's cleaner, not the antivirus: Norton 360 is a separate product and works with a paid annual subscription.
Apps removed from the Play Store
For years, lists like this one started with Clean Master. Today it's no longer on Google Play, as are DU Speed Booster, Battery Doctor, and Advanced Mobile Care. The pages for these apps on the store return an error, and their removal is linked to violations of Google's policies.
The practical risk is this: without the app in the store, the user is led to websites that offer the APK file separately. This download bypasses the Play Store's security checks and may deliver a modified version of the program. If any of these apps are still installed on your phone, the wisest course of action is to uninstall them and adopt one of the alternatives listed above.
Features and benefits of cleaning apps
These apps don't just free up memory: many offer file management, gallery organization, battery usage dashboards, and space reports by category. They are multifunctional tools that help keep your device organized and avoid that "storage full" message at the worst possible time.
However, it's advisable to adjust expectations. The real benefit comes from freeing up space and uninstalling what you don't use—no app increases the device's RAM or transforms an old phone into a top-of-the-line model. Features like "boosting" memory with each tap have a fleeting effect, as Android reloads services immediately afterward. Using the app once or twice a month, calmly, yields more than running a cleaner all the time.
Frequently Asked Questions
Do cleaning apps really speed up your phone?
Partly. They really help when the problem is lack of space, because a nearly full storage slows down the system and hinders updates. However, the promise of "speeding up the processor" doesn't hold up: closing background applications provides momentary relief, and the system reopens them afterward.
Are these apps safe to use?
The five mentioned here are published by identifiable developers and continue to be distributed on Google Play, which was verified before the publication of this text. The golden rule is always to install from the official store and avoid APK files sent via links, messages, or download sites.
Could using these apps erase my data?
They are designed to remove only temporary and residual files, but the photo cleaning functions may suggest images you want to keep. Review the list before confirming and keep a backup of your photos in the cloud or on your computer.
Are these apps free?
Only Google Files is completely free, with no ads and no in-app purchases. CCleaner and AVG Cleaner are free with advertising and sell paid plans. SD Maid 2/SE and Norton Cleaner don't display ads, but both have "In-app purchases" to unlock features. Always check these labels on the Play Store listing before installing.
Conclusion
Keeping your smartphone's memory clean and organized is the cheapest way to ensure your device performs well. For most people, Google Files does the job at no cost; those who want detailed control will find SD Maid 2/SE more suitable; and CCleaner, AVG Cleaner, and Norton Cleaner cater to those who prefer a complete control panel, with the caveat that they charge for or display ads.
The most important thing is where you download it: always use Google Play and be wary of any cleaning app that only exists on APK websites. If you find any outdated information on this page, write to [email protected] and we will review it.
