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It doesn't need it.
It's an option, just like it's optional to not clean it, iOS allows you to force quit apps too...
Probably having double or more memory works in Androids favour too..
 
I've been using a Xiaomi for a while and it comes with a "cleaner" installed factory new. Unless you turn it off, it keeps bothering you every day to clear any not needed files in the system.
 
Sometimes my iPhone starts overheating or acting weird so I have to reboot it. And recently my Note10+ had some lag in a text entry window, so I used the maintenance app on it and it cleared away whatever was causing the lag. I don’t really know why some apps go rogue and seem to hog resources and not get released like they should.

But I’m glad there now exists a means of fixing that so people like me, who enjoy tech but who are not at a level of technical proficiency to troubleshoot in depth, can just focus on enjoying a smoothly functioning phone. I’d worry more if this tool didn’t work, than why it is needed at all. I remember when I didn’t have it and my Android phone would really cause me problems and I had to hand it off to my husband to fix.

Edit, I have a Samsung and a Pixel. It’s the Samsung’s cleaner I’m most familiar with and that one I use only when I want to. It’s not automated. And I’ve turned off all the notifications from all my apps that would nag me to do things I don’t want or need to do.
 
Why doesn't it just do it itself like iOS?
In reality, it doesn't.
The notion that you need a system "cleaner" is a legacy belief from the age of DOS and Windows 9x, and people that are new to smartphones still have this beliefs since their last computing device are probably an old Windows PC. Thus 3rd party developers take advantage to exploit the lack of experience/knowledge of lay people.

In reality, those utilities are taking up further more resources.
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I've been using a Xiaomi for a while and it comes with a "cleaner" installed factory new. Unless you turn it off, it keeps bothering you every day to clear any not needed files in the system.
The cleaner for Xiaomi are useful in cleaning up leftover installation files that Xiaomi's MUI itself left (for updating its system files). This shows more about the lack of optimization of MiUI than Android itself.
 
There is iCleaner Pro for iOS, if you have jailbreak. For the most part it's not necesary, unless you are OCD or running out of storage space.
 
Because it makes the average user feel like they're doing something good. You'll even see iPhone users clamouring for a "close all" button because they either assume those background apps are still running, or feel the need to close apps once they're done with them.
 
Probably for those who think going into Settings>Storage>Clear cached data for all apps is too difficult. You know your apps like browser, reddit client, etc. caches data files, right?

On iOS/iPadOS you have to clear individual app caches or throw out your device and get one with more storage.
 
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Android is advanced enough now that it has it's own RAM manager built into it now. That's what you get for messing with Xiaomi.
 
iOS and Android both can benefit from running maintenance tasks, the only difference is that Android allows access to those maintenance tasks but iOS doesn't.
 
I have both a phone (Pixel 2 XL) and a tablet (Samsung Tab S3) running Android and don't use cleaners on either. RAM cleaners can actually counteract any boosts you might get from battery boosters and making the phone "feel" slower. Like macOS Android likes to keep RAM full, leaving frequently-used apps in memory for faster access from memory that doesn't eat battery power as much as storage chips do.
 
iOS and Android both can benefit from running maintenance tasks, the only difference is that Android allows access to those maintenance tasks but iOS doesn't.
The thing is, iOS doesnt need the user to be the one doing the maintenance because the system does it perfectly well on its own.
 
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I've never used a "cleaner" on my Android devices, I let the OS handle things same as I do my iOS stuff.
 
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That Xiamoi's choice and what you call bloatware. It's completely unnecessary and decreases system efficiency.

You can't blame android, as others others have said, for what a OEM adds on top of it, particularly a chinese OEM. Do you blame android for what amazon does with AOSP in creating their fire tv? Do you blame Ford if some takes an F150, adds an aftermarket suspension and lift, and then complains it rides rough and gets poor gas mileage? Would you blame apple if a jailbroken iphone runs poorly?

No you wouldn't. It's the nature of open source software. You can probably disable the notification, but if you want a true android experience you have to go with a pixel. If you want a mainstream android that demonstrates beneficial oem customization? Then get a samsung or even a oneplus phone.
 
The thing is, iOS doesnt need the user to be the one doing the maintenance because the system does it perfectly well on its own.

Neither do. Cleaner apps are garbage that just fight the OSes own resource management software. Cleaners are for people that don't understand how the software works.
 
The thing is, iOS doesnt need the user to be the one doing the maintenance because the system does it perfectly well on its own.

This is simply not true. If you jailbreak your iOS device you can do maintenance that very clearly does improve the system, like freeing up disk space, which are the same exact things that the maintenance tasks do on Android.
 
The thing is, iOS doesnt need the user to be the one doing the maintenance because the system does it perfectly well on its own.

Wish it did.
Far too often I have to "clean" the task manager to allow heavier apps to run.
Spectrum TV
Netflix
Some sites on Safari
MSOffice with larger files
etc...

Then there is the occasional, thankfully becoming less and less, cleanout to get rid of the Other crap.
I have had to reset and clean out more on iOS in the last 4 months than I have had to do on my Razer over the last year. I do suspect the majority of the iOS clean out has to do with the number of OS updates.
 
Hmm i have my mind pretty much made up. Used a bunch of android devices and been disappointed every single time having my experience with iOS in mind. I'll switch back to Apple soon and never look back.
 
Hmm i have my mind pretty much made up. Used a bunch of android devices and been disappointed every single time having my experience with iOS in mind. I'll switch back to Apple soon and never look back.

That's fine, there are plenty of reasons to prefer iOS over Android but this just isn't one of them. If you'd like to try Android again someday I recommend sticking to Pixel and Android One devices for a pure, bloat free experience.
 
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