This Android task killer promised to speed up your phone—until Google found out what it was really doing


Before smartphones, most people’s experience with operating systems was from computers. Naturally, many of those desktop habits carried over, and malicious Android developers were more than happy to take advantage.

The early Android Market—now the Play Store—was full of “task killer” apps. These apps promised to make your phone feel faster by killing background activities and freeing up RAM. They were extremely popular and also extremely unnecessary. Several of the well-known apps in this genre, including those from one particularly infamous developer, were running scams.

How Android task killers preyed on the uninformed

Android doesn’t work like a desktop OS

Group of multitasking apps in the Recents menu on the Samsung Galaxy Z Fold 5. Credit: Justin Duino / How-To Geek

There are several valid reasons why Android task killer apps were so popular in the beginning. First and foremost, it just seems like the logical thing to do. On computers, we click the “X” to close apps when we’re done with them. Why would I leave an app running in the background if I’m not using it?

The other thing working in task killers’ favor was the performance of the first Android phones. They were limited by much less RAM than we enjoy today, low-powered processors, and worse battery life. Naturally, people were looking for any possible method to extend their devices.

Sadly, when people are looking for answers, it’s not uncommon for nefarious actors to step in with “solutions.” That’s exactly what happened when a popular flashlight app was caught selling user data. Similarly, several task killer apps were not as benevolent as they seemed.


Galaxy S26 Ultra app tray blurry


Stop closing apps on your phone, it’s doing more harm than good

Ignore that “close all” button.

Clean Master and the magical “boost” button

Placebo in action

Not all task killer apps were frauds. Many of them genuinely did kill processes in the background—for better or worse. However, a few notorious apps were caught doing much worse. Cheetah Mobile’s “Clean Master” is perhaps the most well-known.

Clean Master first arrived in the Play Store around 2012, and it quickly became a popular choice for those looking to speed up their Android devices. The app billed itself as the “CCleaner of Android”—a mega-popular Windows app—and at its peak, it had over a billion downloads. Here’s the app description from 2013:

Clean Master is an all-in-one cleaner app on android for cleaning app cache , unused files, residual files, search history and uninstalling apps. With this apps user can also Kill running Tasks and releases more RAM to boost your phone performance and save battery life without granting superuser permission. Just think of Clean Master as the CCleaner of Android.

By 2014, Clean Master had also added antivirus to its list of features, but the “Memory Boost” was the crown jewel. The app would show you how much of your device’s RAM was being used and let you clear it out by tapping the “Boost” button. You might see “54% used” and watch it go down to 0% in an instant. How good does that feel?

Unsurprisingly, not all of this was magic was real. Clean Master had legitimate features, like the ability to uninstall apps and clear cache files. Clearing the phone’s memory, however, didn’t actually help anything, but that’s not what got Cheetah Mobile in trouble.

Cheetah Mobile gets caught red-handed

Deceptive ads and click fraud

The first news of Cheetah Mobile’s less-than-stellar practices came in 2014. A researcher from Sophos Labs, a British software security company, discovered that Clean Master inserted pop-ups when people were browsing websites inside Cheetah Mobile’s ad network. These pop-ups told people their device had been infected with a virus, and pointed them to Clean Master as the solution.

For their part, Clean Master blamed its advertising partners and promised to identify the problem and fix it. The app remained in the Play Store unchanged.

Four years later, in 2018, Cheetah Mobile found itself at the center of a much bigger controversy. A researcher at Kochava, an app analytics company, found eight Android apps in the Play Store that were exploiting permissions as part of an ad fraud scheme.

Seven of those apps were owned by Cheetah Mobile.

Under normal conditions, when a user installs an app from an ad, the publisher of that ad gets paid. After installation, the app does a “lookback” to see where the last click came from—i.e., the ad. Cheetah Mobile was inserting itself in this process, making it look like they served the ad and, therefore, should get paid.

Cheetah Mobile voluntarily removed two of its offending apps, but Clean Master remained in the Play Store. It wasn’t until 2020 that Google finally took action and removed over 600 apps, including Clean Master and the remaining Cheetah Mobile suite. By this time, Clean Master had amassed over one billion installs and 45 million reviews—it was rated 4.7/5.


Be wary of unnecessary apps

So, what’s the moral of the story here? Clean Master technically did some of the things it promised, and users were not directly affected by the company’s sketchy tactics. However, they were clearly used against their will to make money for Cheetah Mobile.

Nowadays, most people understand that Android manages all of this stuff for you. Apps are automatically put to sleep when their resources are needed elsewhere. The OS also has tools in place to keep rogue apps in check. Plus, hardware is simply much better. We have plenty of RAM, powerful processors, and much-improved battery life.

Still, it’s a good reminder that you should be skeptical of any app that claims to do system-level tasks with the tap of a magical button.


Google Pixel phone with flashlight on


This flashlight app was one of the most downloaded Android apps of 2013—until the FTC found out what it was really doing

Shining a light on a shady app.



Source link

Leave a Reply

Subscribe to Our Newsletter

Get our latest articles delivered straight to your inbox. No spam, we promise.

Recent Reviews


The Toyota Corolla Cross Hybrid has quickly become the default choice for buyers looking to step into an affordable hybrid SUV. It’s practical, efficient, and backed by a reputation that makes it an easy recommendation. But when you look beyond the badge, it’s no longer the clear-cut value leader it appears to be.

One Korean rival from Kia quietly outperforms it where it matters most. It’s cheaper to buy, significantly more fuel-efficient, and offers a more refined and spacious experience, despite targeting the same budget-conscious buyers. Instead of just meeting expectations, it raises them for what an entry-level hybrid SUV should deliver.

That’s what makes this comparison so one-sided. When a vehicle costs less while doing more, using less fuel, offering more room, and feeling more polished, it stops being an alternative and starts looking like the obvious choice.

In order to give you the most up-to-date and accurate information possible, the data used to compile this article was sourced from various manufacturer websites, including the EPA.


2026 Toyota Crown Signia


This Toyota hybrid beats Acura, Genesis, and even Lexus where it matters most

The Toyota Crown Signia does more than keep up. In several categories, it sets the pace.

There aren’t many small hybrid SUVs, but the Kia Niro is the best

Easily the most budget-friendly crossover on the market

Hybrid crossovers are a really attractive proposition. You get the added practicality of an SUV and fuel efficiency that keeps your monthly fuel bills low. Perhaps the most obvious choice here, especially if you’re on a tight budget, is the Toyota Corolla Cross Hybrid. However, if you’re looking for the best bang for your buck, and the most efficiency, then the Kia Niro remains king of the subcompact SUV segment.

2026 Kia Niro Hybrid trims and pricing

Models

Starting MSRP

LX

$27,390

EX

$30,190

SX

$33,390

SX Touring

$35,790

As we’ve already mentioned, the Corolla Cross Hybrid is kind of the benchmark for small hybrid SUVs, with its badge definitely helping make it so popular. The Toyota has a starting price of $29,395, meaning it is just over $2,000 more expensive than the Kia. Despite this, we think even the most affordable Niro Hybrid feels more refined, better equipped, and, to top it all off, its more efficient.

With the Niro being one of the most affordable crossovers on the market, you have a little wiggle room when it comes to trims. We still wouldn’t climb the ladder far, as we think the EX offers the best bang for your buck. It comes with niceties like a smartphone charging pad, faux-leather upholstery, and an upgraded infotainment screen. The Premium package is also definitely worth the extra $2,000, adding things like a panoramic sunroof, a power-operated tailgate, and a premium sound system.


Front 3/4 shot of a red 2024 Mazda MX-5 Miata RF driving on a winding road with the ocean in the background.


These 5 sporty cars keep smiles high and fuel bills low

Fun behind the wheel doesn’t have to mean pain at the pump.

Neither are particularly entertaining, but the Niro is lighter on fuel

Beating Toyota at the hybrid game isn’t easy

Toyota is one of the most experienced automakers out there when it comes to building hybrid powertrains, with the Japanese brand being a big proponent of the setup. This is why it’s so impressive that the little Niro comes out ahead when it comes to efficiency. On top of this, Kia has delivered a more refined driving experience that feels better than you’d expect considering the price you pay.

Kia Niro Hybrid performance and efficiency


980919-1.jpg

kia-logo.jpeg

Base Trim Engine

1.6L I4 Hybrid

Base Trim Transmission

6-speed auto-shift manual

Base Trim Drivetrain

Front-Wheel Drive

Base Trim Horsepower

103.5 HP @5700 RPM

Base Trim Torque

106.3 lb.-ft. @ 4000 RPM

Base Trim Fuel Economy (city/highway/combined)

53/54/53 MPG

Base Trim Battery Type

Lithium polymer (LiPo)

Make

Kia

Model

Niro



The Corolla Cross Hybrid has a little more grunt than the Kia, putting down 196 horsepower versus the Niro’s dinky 139 horses. The 1.6-liter engine in the Korean crossover is an underachiever, which is why it takes around 8.9 seconds to get up to 60 miles per hour. With both of these crossovers being more urban crawlers than highway cruisers, we don’t think that lack of power is the end of the world.

There really isn’t a winner when it comes to driving engagement here, with both small SUVs being exceptionally dull to drive. However, the Kia Niro does come feature a pretty plush ride quality. It also gets a six-speed DCT instead of the CVT in the Corolla, which results in less droning when accelerating, resulting in a more refined experience.

Fuel economy

Model

City

Highway

Combined

Kia Niro FE

53 MPG

54 MPG

53 MPG

Kia Niro

53 MPG

45 MPG

49 MPG

Toyota Corolla Cross Hybrid

46 MPG

39 MPG

42 MPG

Efficiency is a massive reason to pick a Kia Niro over a Corolla Cross Hybrid. The base model Niro is rated for up to 53 miles per gallon combined, with every other model managing 49 miles per gallon combined. This means that even the least efficient Niro is rated to get seven more miles per gallon than a Toyota Corolla Cross Hybrid.


2027 Hyundai IONIQ 9 AWD Performance Calligraphy Black Ink


This Hyundai SUV takes three-row EV luxury into new territory

Hyundai IONIQ 9 AWD Performance Calligraphy Black Ink reveal

Kia delivers a sleek and stylish interior in the 2026 Niro

Meanwhile, the Corolla Cross is a bit boring

Toyota has always been known to value simplicity, and this has often resulted in somewhat underwhelming interiors. While there isn’t anything wrong with the cabin of the Corolla Cross, and it does come well-equipped, it does lean a little too far in the utilitarian direction. The Niro, on the other hand, finds a good middle ground between simplicity and modernity.

Interior dimensions and comfort

Model

Kia Niro Hybrid

Toyota Corolla Cross Hybrid

Front row headroom

40.5 inches

38.6 inches

Front row legroom

41.5 inches

42.9 inches

Second row headroom

39.6 inches

39 inches

Second row legroom

39.8 inches

32 inches

Cargo capacity (behind second row)

22.8 cubic feet

21.5 cubic feet

Both the Niro and the Corolla Cross feel very practical for cheap subcompact SUVs, but the Kia has a pretty clear advantage. The Niro offers a much more spacious rear row of seats, with tons of legroom. You’d have no problem fitting even particularly tall passengers in the rear seats. It also does have a slightly more spacious cargo hold, though the difference here is much smaller.

Both the Corolla Cross and Niro have similar philosophies regarding interior design, but with some differences in execution. Both aim for basic functionality, but the Kia does it in a much more contemporary way. It’s obvious at all times that both crossovers are budget-oriented, in no small part thanks to the cheap plastics used, but build quality is good. The Kia also offers a few upscale touches that put it ahead of its Japanese rival, especially on higher trim levels.

Infotainment and technology

There is very little competition between the Niro and Corolla Cross when it comes to tech features. Both come standard with an eight-inch infotainment screen to start, with a 10.3-inch screen available on every trim but the base Niro and a 10.5-inch screen being optional in the Corolla Cross.

The two budget crossovers are fairly evenly matched when it comes to other tech features. Things like smartphone mirroring and a wireless smartphone charging pad are available on the Kia and Toyota. One key difference is the optional sound systems, with the Niro’s seven-speaker Harman/Kardon sound system performing much better than the optional JBL system in the Corolla Cross.


Cheaper, more efficient, and more refined

When comparing these two small crossovers side-by-side, it’s really hard to make a case for the Toyota. The Corolla Cross does have more power and comes with the peace of mind you get from the Toyota badge, but in just about every other way the Kia feels like the better deal. For less money, you’re getting a crossover that is more spacious, less boring on the inside, and far more efficient. In just about every way, the Niro is a more successful budget hybrid crossover.



Source link