Comparison

F vs AST StealthOne

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

F

This app offers comprehensive online security and privacy features, including phishing detection, secure browsing, and identity theft protection. It provides a VPN for private browsing and an ad blocker to enhance your online experience across multiple devices.

Highlights
  • Phishing and scam detection
  • Secure online banking and shopping
  • VPN for private browsing
  • Dark web monitoring
  • Ad blocker for Safari
  • Password manager
Features
Read full description

F-Secure all-in-one security makes online protection easy Choose the protection that matches your needs. Sign up in the app and get Mobile security subscription 14 days free. Mobile Security subscription: Security on the go • No more guessing – detect phishing websites, fake online stores, and SMS scams automatically. • Keep your money safe when banking, browsing, and shopping online. • Spot scams with Scam Scanner — upload a screenshot of anything suspicious and find out if it’s a scam. • Connect to any WiFi hotspot securely with a VPN and make your browsing private. • Prevent identity theft with 24/7 dark web monitoring and data breach alerts. • Eliminate excessive online ads and speed up page loading with Ad Blocker for Safari. Total subscription: complete protection on all devices • Everything included in Mobile security plus all the following benefits. • Protect all your PC, Mac, and mobile devices against cyber threats with one subscription. • Store and access passwords from any device with a password manager. F‑Secure VPN subscription If you only want to guard your privacy, you can get the F‑Secure VPN subscription. With it you only pay for F‑Secure VPN that allows you to browse privately, join any Wi-Fi hotspot safely, and change your IP address. Secure everything you do online F-Secure makes protecting everything you do online easy – whether it’s streaming your favorite show, connecting with family, managing your money, or saving priceless memories. Everything you need is in one app.

About

AST StealthOne

Features
Read full description

AST StealthOne secures all smart devices in the connected environment, while supporting user privacy and placing devices beyond the reach of hackers. AST StealthOne requires a supported router.

Screenshots

F4 screens
AST StealthOne4 screens

Verdict

The call

The clearest difference is in-app purchases: AST StealthOne at none against F's 3. AST StealthOne also leads on iOS requirement (12.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. F sells 3 one-off in-app purchases. AST StealthOne asks for nothing beyond the download.

UpkeepUpdate frequency

F ships an update monthly, AST StealthOne every 4 weeks. The most recent releases landed on November 8, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 8 level
F versus AST StealthOne: the parameters behind the verdict, then further details
ParameterFAST StealthOne
PriceFreeFree
Rating4.4 (504 ratings) — better—
Positive reviews42.4% of reviews—
Number of ratings504 — better—
Update frequencyMonthlyEvery 4 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.012.0 — better
Further details — not scored
Size301 MB50 MB
Age rating4+4+
DeveloperF-Secure CorporationAvira Holding

Bugs and requests

F

Reported bugs

3 issues
  • Frequent login issues
  • Compatibility problems with newer iOS versions
  • Inconsistent browsing protection

Requested features

3 requests
  • Add DuckDuckGo search engine
  • Improve VPN reliability and connectivity
  • Streamline subscription management

AST StealthOne

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

F

One-time3
  • F-Secure VPN - 12 Months$34.99
  • Mobile Security - 12 Months$44.99
  • Total - 12 months 5 devices$89.99
None

AST StealthOne

No in-app purchases

Questions

Is F free?
F is free to download, with in-app purchases available.
Is AST StealthOne free?
AST StealthOne is free to download, with no in-app purchases.
Do F or AST StealthOne have ads?
Neither F nor AST StealthOne shows ads.
Which is updated more often, F or AST StealthOne?
F ships an update monthly, and AST StealthOne every 4 weeks. Most recently, F was updated on November 8, 2026 and AST StealthOne on November 3, 2026.

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