Os melhores aplicativos antivírus para Android em 2021

O Kaspersky Mobile Antivirus, também conhecido como Kaspersky Internet Security para Android, oferece proteção contra malware quase perfeita, um sistema pequeno impacto e um bloqueador de chamadas que realmente funciona.

Não há anúncios na versão gratuita, e não há muito incômodo para atualizar para o plano pago. Os usuários gratuitos obtêm filtragem de chamadas, suporte para Android Wear e um forte conjunto de funções anti-roubo, mas você precisa verificar cada novo aplicativo manualmente.

Os usuários pagantes obtêm verificações automáticas de novos aplicativos, um bloqueio de aplicativo e bloqueio de sites de phishing conhecidos. E é só isso. Não há verificador de rede Wi-Fi e nenhuma das ferramentas de privacidade que outros aplicativos antivírus Android oferecem.

Se você está apenas procurando proteção contra malware, não tem como errar com o antivírus gratuito do Kaspersky Mobile nível. Mas embora a versão paga seja barata, parece simplificada e você pode obter mais do aplicativo rival pago do Bitdefender por US $ 5 a menos.

Leia nosso completo Revisão do Kaspersky Mobile Antivirus .

Lookout Mobile Security, now rebranded as Lookout Security and Antivirus or Lookout Personal, was one of the first Android antivirus apps, and for a long time the best. Its ease of use, clean interface and lack of ads explain its continued popularity.

But Lookout’s costs can rack up quickly. The free tier is bare-bones; it just scans for malware and locates lost phones.

The premium tier charges $30 per year, even though some of its features–malicious website blocking, WI-Fi network scanning–come free with other Android antivirus apps. An unlimited VPN and a data-breach notification service make the premium price worthwhile.

At $100 per year, the”premium plus”plan is actually a fairly inexpensive identity-protection service that offers many of the same benefits you’d get from LifeLock or IdentityForce. It might well be worth the expense.

The trouble is that Lookout doesn’t often submit its app to third-partly lab evaluations, so we don’t really know how well Lookout protects against malware. Its active scans are also slow and heavy.

Read our full Lookout Security & Antivirus review.

Like Avast, McAfee offers a ton of useful features, but its free version is also full of ads and upsell suggestions. The malware protection is decent, if not fantastic, and a useful”Guest”feature lets other people safely use your phone for a short time.

You’ll get some good stuff with the free version of McAfee Mobile Security, such as anti-theft features, a way to track each app’s data usage and a Wi-Fi security scanner.

You’ll get even more with the”Standard”premium tier, including an app locker, a URL screener, 24/7 tech support and no more ads. But it’s a bit pricey at $30 per year  considering that Bitdefender and Kaspersky give you the same features for less.

The top paid tier,”Plus,”costs $80 per year and gives you the Standard features plus unlimited VPN access, but only for that single phone or tablet. You can get one of the best VPN services to cover all your devices for less.

Read our full McAfee Mobile Security review.

Google Play Protect comes built into every Android device that runs Google Play, and it would be great if it worked well. Unfortunately, Google Play Protect’s dismal malware detection makes the strongest possible argument for using a third-party Android antivirus app.

We did like that Google Play Protect’s interface is minimal, there are no ads and the system impact is light. Some of Android’s other built-in features, including Find My Device and Chrome Safe Browsing, mirror what third-party antivirus apps do on the side.

Google Play Protect’s best feature is that Google can use it to remotely disable dangerous apps. This stays the case whether you’re running third-party antivirus software or not. We recommend you not disable Google Play Protect.

But overall, Google Play Protect is awful at protecting you from malicious apps. For your own sake, please use something else.

Read our full Google Play Protect review.

360 Security, which seems to have been recently rebranded as Safe Security, gives you all of its features–including an app lock, performance booster, system cleaner, anti-theft, photo locker, and Wi-Fi scanner–for free.

But there some catches. Many of those features don’t work well, or at all. The interface is cluttered. And you’ll be overwhelmed by ads, ads and more ads, some of which go full-screen.

Trading up to the ad-free version doesn’t entirely reduce the clutter, and still displayed tabs that promoted games and news.

All of this would be more compelling if we had a better idea of how well 360 Security, which is backed by Chinese antivirus company Qihoo 360, protected against malware. Unfortunately, it doesn’t often submit itself to independent lab tests.

360 Security also slowed our system functions to a crawl during scans. As of now, we can’t recommend 360 Security, free or paid.

Read our full 360 Security review.

Best Android antivirus app comparison chart

Why you should use an Android antivirus app

The best way to keep your Android device safe is to keep its software up to date. Every new version of Android is more secure than the one before, and each monthly Android security update fixes newly found flaws.

But unless you’ve got a Google Pixel or Android One phone, you won’t get those updates and upgrades right away. Most device makers need time to make sure changes to Android don’t break their devices or software.

That lag time can be a couple of weeks, or it can be many months. Worse, most Android phone models stop getting Android OS upgrades after two years, and some never get monthly security patches at all.

That’s where the best Android antivirus apps come in. They stop attacks that try to get around Android’s built-in defenses, especially those that Google has patched but which your doesn’t yet (or never will) have. They also stop new attacks that Google Play Protect won’t catch, even on Pixel phones.

How to choose the best Android antivirus app for you

Android antivirus apps come in three pricing schemes: fully free, fully paid, and freemium.

Freemium apps let you choose between getting a limited set of features for free or paying to get a premium version that gives you all the possible features, similar to fully paid apps. Apps that offer a lot of features for free also show you a lot of ads.

Those features might include anti-theft mechanisms, an”advisor”to help you examine and choose apps, a Wi-Fi network security scanners, or an app lock that requires a passcode to open specific apps. 

Both paid apps and premium tiers generally run between $15 and $30 per year. Some app makers try to limit on how many devices you can install their premium/paid versions. Some tack on a super-premium tier that gives you unlimited VPN service or an identity-protection-service, often at a pretty good price.

But the most important factor in deciding which Android antivirus app to use is malware protection. 

Norton and Bitdefender lead in this category, and Kaspersky is not far behind. Avast is good but not great, while the built-in Google Play Protect is terrible. We’re not sure about Lookout and 360 Security because they haven’t submitted their apps to recent lab tests.

How we tested the best Android antivirus apps

To gauge the security protection of the best Android antivirus apps, we used the latest bimonthly test results from AV-TEST, an independent lab in Germany that measures how well major Android security apps detect zero-day malware and other threats. Because some apps’scores are inconsistent from one test to the next, we also looked back at the previous two years of results.

We also used some results from AV-Comparatives, a lab in Austria that once a year tests nearly all the Android antivirus apps in Google Play, even those that don’t cooperate with testing labs. But these tests are less detailed.

To measure the impact antivirus apps have on overall performance, we used the Geekbench 4 benchmarking app on a Google Pixel 3 phone running Android 9.0 Pie. For each app, we ran Geekbench several times with no AV app installed, then with one of the review apps installed, and finally during that app’s full scan.

We also evaluated the number and usefulness of each app’s features, took note of which features were reserved for paid users, and assessed the user interface and installation process.

Kaspersky antivirus products have been banned from U.S. government networks. Because the company is Russian, its software would create an unacceptable risk for persons and organizations involved in national security and critical infrastructure.

However, we think Kaspersky software is perfectly safe for home users. We’ve seen no evidence to convince us otherwise. Kaspersky researchers are well respected throughout the antivirus industry, and the company has publicly exposed Russian cyberespionage campaigns as well as American ones.