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Android Apps > Tools > Kiren by F-Secure
Kiren by F-Secure icon

Kiren by F-Secure

F-Secure Corporation
4.14
1,056,688 reviews
100,000,000+
Downloads
Free

Antivirus, Identity Guard & Scam Protect. F-Secure Mobile Security is now Kiren.

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Screenshots by F-Secure Corporation, from the Google Play listing
View on Google Play

About Kiren by F-Secure

Kiren by F-Secure is a tools app developed by F-Secure Corporation.

Install Statistics

Kiren by F-Secure has been downloaded 420 million times. In the last 30 days, the app was downloaded 130 thousand times. It is ranked in the top 100 tools apps.

User Ratings

Kiren by F-Secure is rated 4.14 out of 5 stars. The rating is based on 1.1 million ratings.

App Information

Kiren by F-Secure is freely available from Google Play. The last update was on March 19, 2026.

Technical Requirements

Kiren by F-Secure requires Android 11+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since before 2010.

Kiren by F-Secure is made and published by F-Secure Corporation. AppBrain is an independent app data site and isn't affiliated with F-Secure Corporation. The app name, icon, screenshots and description belong to F-Secure Corporation and are shown as published on Google Play.

Description by F-Secure Corporation (from Google Play)
Online scams have never been more convincing. A store that looks real but never ships the order. A text that looks like it comes from your bank. A video of someone who never said those words.
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More data about Kiren by F-Secure

Price Free
Total installs 420 million
Recent installs 130 thousand
Rating 4.14 based on 1.1 million ratings
Ranking Highly ranked
Version N/A
App size N/A
Number of libraries 86
Designed for Android 11+
Suitable for Everyone
Ads No ads

App Performance Report

Get a detailed PDF report for Kiren by F-Secure with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more

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Google Play Rating history and histogram

740K
84K
48K
30K
160K

Installs over time

Kiren by F-Secure has been installed 420 million times. Over the past 30 days, it averaged 4.5 thousand installs per day.

Changelog of Kiren by F-Secure

Show changelog

Developer information for F-Secure Corporation

F-Secure Corporation

support.lms@f-secure.com

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Comments on Kiren by F-Secure for Android

★★★★★ T J · Jul 10, 2026
Keeps telling me to update with no update being offered in the play store. Last updated 12/7/22 frustrating. Update: it has updated to Secure on my tablet but in my phone it's still Lookout. 7/10/26 No issues with the app for a long time. Changing to 5 stars
★★★★★ Dawn A · Jul 17, 2026
I have had the Premium Plus for a while now. I like knowing I am as secure as possible with my phone. I feel safe with this security system.
★★★★★ Wyatt Giancoli · Sep 26, 2026
I've been using the app for years, and now it's not auto staying on for security I would like to automatically staying on
★★★★☆ Russell Muggleton · Jan 15, 2026
When I run the app it keeps giving a security alert for Google Chrome, that it is not the latest version & there is a "FIX NOW" button that is shown BUT, when I search for the latest version of Chrome the version details that come up match the version details for Chrome loaded on my mobile device. This first manifested itself after Chrome was updated (to the latest version) back in early August (2025) Question;- Is this a glitch in F-Secure that needs "fixing"? How do I clear the "cache"?
★★☆☆☆ Paul Chatman · Sep 10, 2026
09/10/26: Just saw the email that they're doing what NOBODY asked for by COMPLETELY changing the app & making it rely solely on their Kiren AI. Don't fix, what isn't broke. The app doesn't need an AI makeover. I smell greedy investors getting involved!! 08/14/2025-10/19/2020: Got Premium with my T-Mobile subscription. I had my subscription since December 2014. I've had it since it was just Lookout, then Lookout Life, now F-Secure. To me, I've experienced no significant change except the name.
★☆☆☆☆ J F · Jul 8, 2026
The app (formerly Lookout)was included when I purchased phone and phone plan many years ago. I had the Lookout premium which included VPN. Now I have to pay to get VPN, but it was already included in my phone plan for free. Seems like the original Metro PCS phone plan is not being honored anymore. It seems l was downsized to this app instead.
★☆☆☆☆ Mike Beaumont · Jan 19, 2026
AGAIN AUTO UPDATED WHEN AUTO UPDATE IS OFF! AND WITH THE DEVICE IN FLIGHT MODE❗ AGAIN AUTO UPDATING ON A METERED NETWORK? Why are apps auto updating when auto update is OFF?

Google Play Rankings for Kiren by F-Secure

Top rankings

Rank Country Category List
54 United States Tools Top Grossing
57 Germany Tools Top Grossing
58 Japan Tools Top Grossing
54 United Kingdom Tools Top Grossing
83 Austria Tools Top Grossing
83 Belgium Tools Top Grossing
83 Switzerland Tools Top Grossing
83 Czech Republic Tools Top Grossing
83 Denmark Tools Top Grossing
83 Finland Tools Top Grossing
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Ranking history in United States

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Technologies used by Kiren by F-Secure

86 libraries
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Frequently asked questions about Kiren by F-Secure

Is Kiren by F-Secure free?

Yes. Kiren by F-Secure is free on Google Play.

Is Kiren by F-Secure still available?

Yes. Kiren by F-Secure is on Google Play, and the last update we saw was on March 19, 2026.

Does Kiren by F-Secure contain ads?

No. Google Play does not list Kiren by F-Secure as containing ads.

What Android version does Kiren by F-Secure require?

Kiren by F-Secure runs on Android 11 and higher.

Is Kiren by F-Secure suitable for children?

Google Play rates the content of Kiren by F-Secure as suitable for everyone.

How many times has Kiren by F-Secure been installed?

Google Play lists 100,000,000+ installs for Kiren by F-Secure.

How do people rate Kiren by F-Secure?

Kiren by F-Secure scores 4.14 out of 5 stars, from 1,056,688 ratings on Google Play.

Who made Kiren by F-Secure?

Kiren by F-Secure was developed by F-Secure Corporation. It is listed in the tools category on Google Play.

What are the best alternatives to Kiren by F-Secure?

People looking at Kiren by F-Secure also look at these tools apps: VirusBuster Mobile, ScamGuard: Link Checker, Mobile Security & Antivirus, ScamAdviser: Scam Checker, Dr.Capsule: Antivirus Cleaner.

Popular Tools Apps Price drops on Google Play Top new apps Today's trending apps Apps other people are watching
VirusBuster Mobile icon VirusBuster Mobile
ScamGuard: Link Checker icon ScamGuard: Link Checker
Mobile Security & Antivirus icon Mobile Security & Antivirus
ScamAdviser: Scam Checker icon ScamAdviser: Scam Checker
Dr.Capsule: Antivirus Cleaner icon Dr.Capsule: Antivirus Cleaner
McAfee: Stay Secure & Private icon McAfee: Stay Secure & Private
Mobile Security & Antivirus icon Mobile Security & Antivirus
Guardio - Mobile Security icon Guardio - Mobile Security
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