# Kiren by F-Secure — Identity Guard & Scam Protect

> All-in-one mobile security and identity protection app. (iPhone/iPad app by F-Secure Corporation.)

- Source: https://appshunter.io/ios/app/kiren-by-f-secure/id434893913 (this page in markdown: same URL + `.md`)
- Developer: [F-Secure Corporation](https://appshunter.io/developer/425351654)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 4.60/5 from 107,066 App Store ratings · 552 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 133 MB
- Languages: American English
- Released: 2011-10-18
- Data updated: 2026-10-01
- Monetization: subscription
- User reviews in markdown: https://appshunter.io/ios/app/kiren-by-f-secure/id434893913/reviews.md

## What is Kiren by F?

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. These are not aimed only at the careless. They are built to catch anyone, on an ordinary day, in the middle of an ordinary purchase or message.

Kiren is a digital safety app from F-Secure, made for exactly these moments. It helps you tell what is real from what is fake, and it keeps watch over your personal information.

F-SECURE MOBILE SECURITY IS NOW KIREN
Kiren is the next version of F-Secure Mobile Security, built by the same team and completely redesigned. Your existing subscription carries over automatically. Sign in with the same email address you used before and your protection is active. There is nothing to buy again and no change in price.

CHECK BEFORE YOU ACT
• Link Checker: Confirm whether a link is safe before you open it. Shopping sites get a trust rating, useful before buying from an unfamiliar store.
• Message Checker: Paste in a suspicious text and find out in seconds whether it shows signs of a scam.
• Breach Check: See whether an email address has appeared in a known data breach.
• Quick Access to find, lock or wipe your lost device. 

PROTECTION THAT RUNS IN THE BACKGROUND (Kiren Plus)
• Browsing Protection: Prevent cyber-criminals from redirecting you to malicious websites while using Safari browser. Bank and shop with confidence with Safari Browser. Browsing Protection verifies that banking sites are real and rates online stores before you buy.
• Message Protection: Filters scam texts from unknown senders out of your main inbox. Conversations with your contacts are never analyzed.
• Personal data monitoring: Watches your email addresses, phone numbers, payment cards, and identity documents around the clock. If any of them appear in a new breach, you get an alert with full details and step-by-step guidance on what to do.
• Scam Scanner: Upload a screenshot of a listing, an offer, or a photo and Kiren's AI checks it for scam tactics and deepfake manipulation.
• Breach Report: Get timely alerts whenever a company, app or service you use has a data breach along with info about how to best secure your data.

KEEP YOUR DEVICE IN GOOD SHAPE
• Device Health checks that a device lock is set and that iOS is up to date, the two settings that make the biggest difference to everyday safety.
• Recent News keeps you informed about data breaches and current scams.

SEE IT WORKING
Three screens show the whole picture. Overview gives an at-a-glance read on how well protected you are. Activity shows what has been checked and what has been caught over the past week. You shows which personal details are being watched and whether any have been exposed.

BUILT WITH PRIVACY IN MIND
Sign in with your email address and a one-time code. There is no password to remember. Your browsing events and checked messages are stored locally on your device. Watched personal details are shown partly hidden in the app.

FREE AND PLUS
Kiren Free includes Link Checker, Message Checker, Breach Check, Device Health, and security news. Kiren Plus adds Browsing Protection, Message Protection, personal data monitoring, and the Scam & Deepfake Scanner.

Kiren is made by F-Secure, protecting people online since 1988.

Subscription information: If you subscribe through the app, your subscription is charged to your Apple account. It renews automatically at the end of each subscription term unless auto-renewal is turned off at least 24 hours before the end of the current term. Auto-renewal can be turned off at any time in your App Store account settings. Any unused portion of a free trial period, if offered, is forfeited when you purchase a subscription.

Terms of Service: https://www.f-secure.com/en/legal/terms
Privacy Policy: https://www.f-secure.com/en/legal/privacy/kiren

## Key features

- Malware, spyware, adware, and phishing protection
- Device location tracking and remote lock/wipe
- Data breach alerts and identity theft protection
- Secure Wi-Fi and safe browsing with VPN
- Low battery location saving (Signal Flare)

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Lookout Premium Plus | $9.99 | per month |
| Lookout Premium Plus | $99.99 | per year |
| Lookout Premium Plus Trial | $9.99 | per month |
| Lookout Premium Plus | $99.99 | per year |
| Lookout Premium | $2.99 | per month |
| Lookout Premium | $29.99 | per year |
| Lookout Premium Plus | $9.99 | per month |
| Lookout Premium | $29.99 | per year |
| Mobile Security Premium | $4.99 | per month |
| Lookout Premium Plus | $59.99 | per year |
| Lookout Premium Plus | $9.99 | per month |


## Chart rankings

- #167 in Top Grossing · Utilities (US App Store)

## What do users think of Kiren by F?

Overall sentiment: neutral

**Pros**

- 🚀 Exceptional app
- 🔒 Safe and secure
- 🔒 Excellent protection
- 🚀 Reliable and stable
- 🔒 Keeping me safe online
- 👍 Excellent app
- 👍 Quite good app
- 🚀 Effective and simple
- 🔒 A must have!
- 👍 Great security app

**Cons**

- 🐛 Crashes all the time
- 🐛 Not working
- 🐛 Lookout upgrades without consent
- 🐛 Impossible to cancel
- 🐛 Cancels ad-blockers
- 🐛 Breach report issues
- 🐛 VPN issues
- 🐛 Locating feature not accurate
- 🔋 Drains battery
- 🐛 No customer service

**Commonly reported bugs**

- Lookout app not working on iPhone 11
- Notifications not working
- Subscription issues
- Locating feature not working
- VPN disconnection issues

**Most requested features**

- Ability to contact support
- Malware detection and removal
- Real-time phone/app scanning
- Security report generation
- Dark mode option

## Recent user reviews (10 of 552)

All indexed reviews: https://appshunter.io/ios/app/kiren-by-f-secure/id434893913/reviews.md

### 5/5 — Keep up the exceptional work

*2026-09-26, version 6.28.1*

👍🏽

### 1/5 — App In Search of Identity

*2026-09-19, version 6.28.1*

Multiple App name changes, each more opaque, should’ve stuck with the original name - ironic for an “Identity Guard” app…

### 5/5 — Good

*2026-09-17, version 6.28.1*

Good

### 5/5 — I hole this works

*2026-09-14, version 6.28.1*

I’ve got at any point in time 15-20 20-25 year olds stealing rein
Amq a

### 5/5 — Lookout

*2026-09-13, version 6.28.1*

Easy and effective

### 5/5 — Great layout easy to use

*2026-09-12, version 6.28.1*

I love the app because it offers a free version that actually works. The only thing I would like to see is another option for more benefits. 60$ a year only is not bad but a lot of people can’t pay it upfront without taking a hit in today’s economy, maybe do 5$ a month or something similar just in smaller amounts. Thank you for providing safety and security for people.

### 5/5 — Great App

*2026-09-11, version 6.28.1*

Great free app!

### 4/5 — iOSアップデート

*2026-09-09*

以前のバージョンでは、iOSのアップデートに伴い、「古いバージョンのOSです。iOSをアップデートして下さい」とのアラートが表示され、アプリアイコンにバッジ表示にて、通知もありましたが、かなり前からアラートも通知もなくなりました。

iOSのアップデートも感知していない様です。

また、アプリ起動にも時間がかかり、インストールはして、随時最新バージョンにアップデートしてはいるものの、メリットが見出せない様になりました。

追記(2026.1.31) しかしながら、公開Wi-Fiネットワークに接続した際に、そのネットワークの危険性を通知して、接続を遮断してくれました。VPNを通した接続でしたが、セキュリティの高さには驚きました。

再追記(2026.9.10)最近のアップデートにより、再びiOSのアップデートを通知して来る様になりました。

アプリ内に「このアプリはKiren by F-Secureに新しい名前が変わる。」との通知(原文英文)が来ています。今はまだベータ版段階との事。詳細情報が待たれます。

**Developer response:** こんにちは。

詳細な状況をお知らせいただき、ありがとうございます。最新バージョンにてiOSのアップデート通知機能が復旧したとのこと、大変嬉しく思います。また、公共Wi-Fi保護機能につきましても、好意的なご評価をいただき感謝申し上げます。「Kiren by F-Secure」への移行につきましては、現在ベータ版の段階にあり、開発の進展に合わせて改めて詳細をご案内する予定です。

今後ともよろしくお願いいたします。
Chameni / F-Secure

### 3/5 — I see no app or system scanning in Premium

*2026-09-04, version 6.28.1*

I have an iPhone8 Plus and Lookout Premium. I am receiving many malicious link warnings as if there is a virus on my phone now. App Scan does not appear to be an option. Support has not responded to my inquiries. Not enough security or support. At least Lookout does warn and block the malicious links.

### 3/5 — Mostly great, but …

*2026-08-24, version 6.28.1*

F-Secure alerts me when it finds a website attempting to phish. That is great. But it would be even greater if it would show what the website was, so I would know to stay away from it. F-Secure knows  what it was. Why can’t it tell me? Or at least tell me the time it detected it?

## Frequently asked questions about Kiren by F

### What does F-Secure Mobile Security do?

F-Secure Mobile Security provides comprehensive protection for your mobile devices and personal identity. It guards against malware, spyware, phishing attacks, and secures your internet connection with features like Safe WiFi and Safe Browsing. The app also offers identity theft protection and alerts you to data breaches.

### What are the key security features?

Key features include protection against malware, spyware, and phishing. It also offers device location tracking, remote locking and data wiping, data breach reports, and secure browsing with a VPN. Signal Flare automatically saves your device's location when the battery is low.

### How much does F-Secure Mobile Security cost?

The app operates on a subscription model. If you subscribe through the app, your Apple account will be charged, and the subscription will automatically renew unless turned off in your App Store settings at least 24 hours before the current term ends.

### Is F-Secure Mobile Security compatible with my device?

The description states it offers premium mobile security and identity protection for all of your Apple devices. Specific iOS version compatibility is not detailed, but it is designed for the Apple ecosystem.

### What are common use cases for this app?

Common use cases include protecting your phone from viruses and malware, securing your personal data from theft, ensuring safe online browsing, and gaining peace of mind through identity protection services. It's also useful for locating a lost or stolen device.

## Version history (last 5 releases)

### 11.1.5 — 2026-09-29

F-Secure Mobile Security is now Kiren. This is a complete redesign built around today's scams. Check links, texts, and images before you act on them. Let Browsing Protection and Message Protection work in the background. Keep watch over your personal data with alerts when it appears in a breach. Your existing subscription carries over. Sign in with the email address you used before and you are protected.

### 6.28.1 — 2026-04-13

Bug fixes and stability improvements.

### 6.28.0 — 2026-03-31

Bug fixes and stability improvements.

### 6.27.0 — 2025-07-19

Bug fixes and stability improvements.

### 6.26.0 — 2025-06-08

Bug fixes and stability improvements.

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## More apps by F-Secure Corporation

- [F-Secure: Total Security & VPN](https://appshunter.io/ios/app/f-secure-total-security-and-vpn/id572847748)
- [F-Secure FREEDOME VPN](https://appshunter.io/ios/app/f-secure-freedome-vpn/id771791010)
- [F-Secure SENSE Router](https://appshunter.io/ios/app/f-secure-sense-router/id1062846796)
- [F-Secure SENSE](https://appshunter.io/ios/app/f-secure-sense/id1458871297)
- [F-Secure ID PROTECTION](https://appshunter.io/ios/app/f-secure-id-protection/id1507948280)

All apps by F-Secure Corporation: https://appshunter.io/developer/425351654

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-01.*