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Head-to-head · Antivirus Software

Kaspersky Plus Internet Security vs Avast One

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Kaspersky Plus Internet Security #6 in Antivirus Software 8.8/10 30-day trial Free trial✓ 3 of 3 features Visit Kaspersky
Avast One #8 in Antivirus Software 8.5/10 Free plan Free plan✓ 1 of 3 features Visit Avast One

Kaspersky Plus Internet Security leads on 0 checks, Avast One on 2, and 3 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreKaspersky Plus Internet Security · 8.8/10
  • Free planonly Avast One
  • Free trialonly Kaspersky Plus Internet Security
  • Most featuresKaspersky Plus Internet Security · 3 of 3

Kaspersky Plus Internet Security scores higher on our rubric for antivirus software: 8.8 against 8.5 out of 10; our editors rank them #6 and #8.

Avast One offers free plan; Kaspersky Plus Internet Security doesn't. Avast One leads on device limit: 30 devices versus 10 devices.

Kaspersky Plus Internet Security is the better fit for single-device users wanting a full security suite. Avast One is the better fit for broad protection with a free starting option.

  • Kaspersky Plus Internet Security fits best

    Single-device users wanting a full security suite

  • Avast One fits best

    Broad protection with a free starting option

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Side by side

Feature Kaspersky Plus Internet Security 8.8/10 Visit ↗ Avast One 8.5/10 Visit ↗
At a glance
Editor score 8.8 8.5
Ranking #6 in Antivirus Software #8 in Antivirus Software
Best for Single-device users wanting a full security suite Broad protection with a free starting option
Pricing model Paid Free plan + paid
Starting price 30-day trial —
Free plan — ✓ (best)
Free trial 30 days —
Money-back guarantee 30 days 30 days
Deployment Desktop, Mobile Desktop, Mobile
Platforms Windows, macOS, Linux, iOS, Android Windows, macOS, iOS, Android
Support Phone, Tickets, Docs Community, Docs
Built for Solo, Small business Solo, Small business
Features Kaspersky Plus Internet Security 3/3 · Avast One 1/3
Ransomware protection ✓ ✓
Parental controls ✓ (best) Not checked yet
Password manager ✓ (best) Not checked yet
Specs
Protection scope Complete security Complete security
Device limit 10 devices 30 devices (best)
Supported platforms Windows, macOS, Linux, Android, iOS Windows, macOS, Android, iOS
Our review
Pros
  • Covers antivirus, ransomware, firewall, phishing, and payment threats
  • Includes unlimited VPN, password manager, and data-leak checking
  • Supports Windows, macOS, Linux, Android, and iOS
  • Free starting plan with antivirus, web, and ransomware protection
  • Covers Windows, macOS, Android, and iOS
  • Adds VPN, firewall, webcam, scam, and breach monitoring tools
Cons
  • The listed Kaspersky Plus plan covers one device
  • There is no free plan
  • Pricing varies by region and includes an introductory offer structure
  • The entry-level VPN is limited
  • Paid plans add complexity across modules
  • Pricing is region-dependent
Our verdict

Kaspersky Plus Internet Security is a paid subscription antivirus product for individuals and families who want more than malware detection on a single device. Its security coverage includes real-time antivirus, anti-malware,…

Read the review →

Avast One is a consumer security application for individuals and families protecting personal devices and online activity. It combines real-time antivirus protection with ransomware defense, malicious-website blocking, AI-assisted scam…

Read the review →
  1. Kaspersky Plus Internet SecurityAntivirus Software 8.830-day trial
  2. Avast OneAntivirus Software 8.5Free plan

Strengths and trade-offs

  • Kaspersky Plus Internet Security — where it wins

    • Covers antivirus, ransomware, firewall, phishing, and payment threats
    • Includes unlimited VPN, password manager, and data-leak checking
    • Supports Windows, macOS, Linux, Android, and iOS

    Where it doesn't

    • The listed Kaspersky Plus plan covers one device
    • There is no free plan
    • Pricing varies by region and includes an introductory offer structure

  • Avast One — where it wins

    • Free starting plan with antivirus, web, and ransomware protection
    • Covers Windows, macOS, Android, and iOS
    • Adds VPN, firewall, webcam, scam, and breach monitoring tools

    Where it doesn't

    • The entry-level VPN is limited
    • Paid plans add complexity across modules
    • Pricing is region-dependent
  • Kaspersky Plus Internet Security8.8/10 · 30-day trial

    A broad security suite for one device, with VPN and password management included.

    Visit KasperskyFull verdict →
  • Avast One8.5/10 · Free plan

    A broad consumer security suite with free essentials and paid privacy and identity tools.

    Visit Avast OneFull verdict →

More comparisons

All antivirus software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update