IObit and Avast: which antivirus software provides better protection for your PC? This comprehensive comparison examines detection rates, system performance, pricing, and compatibility between IObit Malware Fighter and Avast Antivirus.
More importantly, we answer the critical question many users face: can you safely run IObit and Avast together? (Spoiler: it depends on which IObit products you’re using.)
Whether you’re choosing your first antivirus or considering switching providers, this guide provides detailed analysis backed by independent test results and real-world performance data. We’ll help you decide which solution—or combination of solutions—best fits your security needs.
Table of Contents
IObit Antivirus Solutions: Complete Product Range Explained
Before comparing IObit and Avast directly, it’s essential to understand that IObit offers several distinct products with varying levels of antivirus protection. Many users search for “IObit antivirus” without realising the company produces multiple security and optimisation tools, each serving different purposes.
IObit Malware Fighter: Core Antivirus Protection
IObit Malware Fighter is the company’s dedicated antivirus solution, designed specifically to combat malware, ransomware, and other security threats. This programme operates as a standalone security application with real-time protection capabilities.
The software employs a dual-engine approach, combining Bitdefender’s established antivirus engine with IObit’s proprietary detection technology. This layered defence strategy aims to catch threats that single-engine solutions might miss. Real-time protection monitors file operations, system behaviour, and network activity continuously, blocking suspicious actions before they can harm your system.
IObit Malware Fighter offers several scan types: Quick Scan examines common threat locations in minutes, Full Scan analyses your entire system thoroughly, and Custom Scan allows you to target specific folders or drives. The programme includes anti-ransomware protection that shields critical files from encryption attacks, browser protection to block malicious websites and phishing attempts, and a file shredder for permanently deleting sensitive data.
The free version provides basic scanning and removal capabilities, whilst IObit Malware Fighter Pro adds real-time protection, automatic updates, and advanced anti-ransomware features. Independent testing shows detection rates between 97-99%, placing it in the “good” category but slightly below top-tier competitors.
Advanced SystemCare’s Built-in Antivirus Features
Advanced SystemCare is IObit’s flagship system optimisation suite, primarily focused on improving PC performance through registry cleaning, junk file removal, and system tune-up. However, it also includes security modules that can overlap with dedicated antivirus software.
The suite features a Real-time Protector module that monitors system processes for suspicious behaviour, Browser Protection that blocks unsafe websites and prevents browser hijacking, and privacy tools that erase digital footprints. These security components operate alongside the optimisation features, creating an all-in-one maintenance and protection package.
Advanced SystemCare’s security capabilities are less comprehensive than IObit Malware Fighter’s dedicated protection. The Real-time Protector focuses primarily on known threats and system behaviour monitoring rather than advanced malware detection. For users with minimal security needs who prioritise system optimisation, Advanced SystemCare’s built-in protection may suffice. However, most security experts recommend pairing it with dedicated antivirus software or disabling its security modules when using another antivirus.
IObit Antivirus Performance Benchmarks
Performance testing reveals IObit’s strengths and limitations compared to industry leaders. IObit Malware Fighter scans quickly, completing a full system scan of a 500GB drive in approximately 45-60 minutes depending on file count. Quick scans finish in 3-5 minutes, making them practical for daily use.
System resource usage remains modest during active scanning, typically consuming 15-20% CPU usage and 150-200MB RAM. This lightweight footprint makes IObit suitable for older computers with limited resources. In comparison, some competitors use 25-35% CPU during scans, causing noticeable system slowdowns.
Detection capabilities, whilst solid, don’t quite match top-tier solutions. Recent independent testing by AV-Test shows IObit Malware Fighter Pro achieving 97.8% detection for zero-day malware (new, previously unknown threats) and 99.1% for widespread malware. False positive rates remain low, with only 3 legitimate files incorrectly flagged during testing periods.
Avast Antivirus: Product Range and Capabilities
Avast takes a different approach, positioning itself primarily as a comprehensive security provider rather than a system optimisation suite. The company offers a tiered product structure catering to varying security needs and budgets.
Avast Free Antivirus Features
Avast Free Antivirus provides surprisingly robust protection at no cost, making it one of the most popular free security solutions globally. The programme includes essential real-time shields: File Shield scans files as you open them, Web Shield blocks dangerous websites and downloads, Mail Shield examines email attachments, and Behaviour Shield monitors applications for suspicious activity.
Additional free features include Wi-Fi security scanning to identify network vulnerabilities, a password manager (limited to one device), and basic ransomware protection. The free version delivers excellent malware detection—consistently achieving 99%+ in independent tests—without requiring payment.
Avast Free’s main limitations compared to premium versions include the lack of firewall protection, restricted customer support, and advertising prompts encouraging upgrades. Despite these limitations, the core antivirus protection remains comprehensive enough for most home users.
Avast Premium Security vs Internet Security
Avast’s paid tiers expand protection significantly beyond the free version. Premium Security (formerly Avast Premier) includes an advanced firewall that monitors and controls network traffic, enhanced ransomware protection with automatic file backup, a Sandbox feature for testing suspicious programmes safely, and Real Site technology preventing DNS hijacking.
The premium package also removes advertisements, provides priority customer support, and extends the password manager to unlimited devices. Web Shield Pro offers enhanced tracking protection and secure banking features for financial transactions.
Avast Internet Security sits between the free and premium tiers, offering firewall protection and anti-spam filtering without the Sandbox and Real Site features. For most users, either Avast Free (excellent protection at no cost) or Premium Security (complete protection suite) makes the most sense, with Internet Security serving a narrow middle market.
Avast Performance and System Impact
Performance testing positions Avast as one of the lighter antivirus solutions despite its comprehensive feature set. Full system scans complete in 50-70 minutes depending on drive size, comparable to IObit’s scanning speed. Smart Scan, which combines antivirus scanning with system optimisation checks, finishes in 5-10 minutes.
CPU usage during active scanning averages 18-22%, slightly higher than IObit but still considered lightweight. RAM consumption sits around 200-250MB during normal operation, rising to 300-400MB during intensive scans. These figures indicate Avast runs efficiently even on moderately-powered systems.
Detection rates consistently rank among the industry’s best. Independent testing by AV-Test shows Avast achieving 99.4% zero-day malware detection and 99.8% widespread malware detection. False positive rates remain minimal, with only 1 legitimate file incorrectly flagged during recent testing periods. This superior detection capability, combined with reasonable system impact, explains Avast’s strong reputation in security circles.
Can You Use IObit and Avast Together?
This question represents one of the most common concerns amongst users considering both companies’ products. The answer depends entirely on which specific IObit tools you’re planning to use alongside Avast, as different combinations produce vastly different results.
Understanding why conflicts occur helps clarify which combinations work safely. Real-time antivirus scanners operate at the system level, constantly monitoring file operations, process execution, and network activity. When two real-time scanners run simultaneously, they compete for the same system resources and often interfere with each other’s operations. Each scanner may flag the other’s processes as suspicious, leading to false positives, performance degradation, and system instability.
IObit Malware Fighter + Avast: Why You Shouldn’t Run Both
Running IObit Malware Fighter and Avast as simultaneous primary antiviruses creates guaranteed conflicts. Both programmes provide comprehensive real-time protection, meaning they’re both trying to scan every file operation, monitor every process, and analyse every network connection in real-time.
The practical consequences include severe performance degradation, with typical slowdowns of 10-20% compared to running a single antivirus. Your system experiences unnecessary CPU and RAM consumption as both programmes duplicate scanning efforts. Database update conflicts arise when both programmes try to download and install threat definition updates simultaneously, occasionally causing one or both to malfunction.
False positive detection becomes problematic, with each antivirus potentially flagging the other’s legitimate system processes as suspicious. This creates alert fatigue and risks accidentally quarantining important security components. System crashes and Blue Screen errors occasionally occur when the programmes’ deep system-level operations clash.
Security experts universally recommend against running dual real-time antivirus scanners. Instead, choose one as your primary protection and remove or completely disable the other. If you prefer IObit’s interface and features, commit fully to IObit Malware Fighter Pro. If you prefer Avast’s superior detection rates, use Avast exclusively and uninstall IObit Malware Fighter.
IObit Advanced SystemCare + Avast: Safe Coexistence Tips
Advanced SystemCare presents a more nuanced situation. The programme’s primary function involves system optimisation rather than real-time antivirus protection, making it potentially compatible with Avast—but only with proper configuration.
The critical step involves disabling Advanced SystemCare’s security modules that overlap with Avast’s functions. Navigate to Advanced SystemCare’s settings and disable the Real-time Protector module, as this directly conflicts with Avast’s real-time shields. Similarly, disable Browser Protection if you’re using Avast’s Web Shield, as both attempt to monitor and filter web traffic.
Once these modules are disabled, Advanced SystemCare can safely handle system optimisation tasks (registry cleaning, junk file removal, startup optimisation) whilst Avast provides security protection. This division of labour prevents conflicts whilst allowing you to benefit from both programmes’ strengths.
Monitor system performance after installation. If you notice slowdowns, excessive CPU usage, or stability issues, these indicate remaining conflicts requiring further adjustment. Task Manager helps identify which programme consumes excessive resources during specific operations.
IObit Uninstaller + Avast: Compatible Tools
IObit Uninstaller works perfectly alongside Avast without any conflicts. The uninstaller’s function—thoroughly removing unwanted programmes and cleaning leftover registry entries—doesn’t overlap with Avast’s real-time protection capabilities.
In fact, IObit Uninstaller complements Avast effectively. When removing potentially unwanted programmes (PUPs) or stubborn malware that has been neutralised, IObit Uninstaller ensures no registry entries or leftover files remain. Avast’s standard uninstallation features are less comprehensive in this regard.
This combination represents an ideal pairing: Avast handles real-time threat detection and prevention, whilst IObit Uninstaller tackles thorough programme removal and system cleanup. Both programmes perform distinct functions without competing for the same system resources or operational space.
Compatibility Matrix and Quick Reference
Safe Combinations:
- ✓ Avast (any version) + IObit Uninstaller
- ✓ Avast (any version) + IObit Driver Booster
- ✓ Avast (any version) + IObit Smart Defrag
- ✓ Avast (any version) + Advanced SystemCare (with security modules disabled)
Unsafe Combinations:
- ✗ Avast + IObit Malware Fighter (both running real-time protection)
- ✗ Avast + Advanced SystemCare (with Real-time Protector enabled)
- ✗ Avast + Advanced SystemCare (with Browser Protection enabled)
Recommendation: Use Avast as your primary antivirus and supplement with IObit’s utility tools rather than its security products. This approach avoids conflicts whilst leveraging each company’s strengths.
Is IObit Safe and Legitimate?
Safety concerns about IObit arise frequently in user forums and search queries. These concerns stem from several factors: the company’s Chinese ownership, aggressive marketing tactics, and occasional false positive detections by competing antivirus products. Understanding these issues helps users make informed decisions.
Is IObit Malware Fighter Safe to Use?
IObit Malware Fighter is a legitimate antivirus programme, not malware itself. Independent testing by recognised laboratories (AV-Test, AV-Comparatives) confirms the software performs its stated functions without malicious behaviour.
The programme’s detection capabilities, whilst not top-tier, remain solid and effective against common threats. Recent testing shows consistent detection rates between 97-99%, providing adequate protection for most users. The software receives regular updates to its threat database, typically multiple times daily, ensuring protection against emerging threats.
Concerns about IObit’s Chinese ownership relate primarily to data privacy rather than software safety. IObit’s parent company operates from Chengdu, China, which raises questions about potential data collection and sharing with Chinese authorities. Review IObit’s privacy policy carefully if data sovereignty concerns you. The software does collect usage statistics and system information, though the company claims this data improves product development rather than serving surveillance purposes.
No credible evidence suggests IObit Malware Fighter contains backdoors, spyware, or malicious code. The safety concerns are legitimate from a privacy perspective but not from a “is this software a virus” perspective.
Is IObit a Virus or PUP?
Some antivirus programmes flag IObit products as potentially unwanted programmes (PUPs), creating confusion about the software’s legitimacy. Understanding why these detections occur clarifies the situation.
IObit employs aggressive bundling during installation, offering additional IObit products alongside the programme you intended to install. If users click through installation screens without reading carefully, they may install multiple IObit programmes unintentionally. This bundling behaviour resembles PUP distribution tactics, triggering warnings from some security software.
The programmes also request extensive system permissions, requiring deep system-level access to perform optimisation and security functions. This legitimate requirement for functionality appears suspicious to behaviour-monitoring systems that flag programmes seeking extensive permissions.
Marketing tactics contribute to PUP classifications. IObit products display persistent upgrade prompts, system warning notifications (often exaggerated), and prominent advertisements for other IObit products. This behaviour pattern matches adware characteristics, despite the underlying software performing legitimate functions.
To avoid issues, download IObit products exclusively from iobit.com rather than third-party software repositories. During installation, select custom installation and carefully review each screen, declining bundled offers you don’t want. These precautions ensure you install only intended programmes without unwanted additions.
IObit Privacy and Data Collection Policies
IObit collects various data types during software operation. Understanding what information the company gathers helps users assess privacy implications.
The software collects usage statistics including features used, scan frequency, threats detected, and programme settings. System information gathered includes hardware specifications, operating system version, installed software lists, and performance metrics. Some IObit products collect browsing data when browser protection features are enabled, including websites visited and blocked threat attempts.
IObit’s privacy policy states this data improves product development, enhances threat detection, and personalises user experience. The policy also indicates data may be shared with third-party analytics providers and, potentially, Chinese authorities if legally required.
For privacy-conscious users, consider these alternatives: use Avast instead (European-based company with stronger privacy protections), disable data collection where IObit provides options, or use IObit’s offline features exclusively without connecting to their cloud services.
IObit Malware Fighter vs Avast: Detailed Analysis
Direct comparison between IObit Malware Fighter and Avast Antivirus reveals distinct differences in protection capabilities, features, and value propositions.
Detection Engine Technology Comparison
IObit Malware Fighter’s dual-engine approach combines Bitdefender’s established engine with IObit’s proprietary technology. The Bitdefender engine provides primary threat detection, leveraging one of the industry’s most respected detection databases. IObit’s supplementary engine focuses on behaviour analysis and emerging threat detection, theoretically catching threats the primary engine misses.
Avast employs its in-house engine exclusively, enhanced with machine learning and artificial intelligence for advanced threat identification. The company’s extensive threat database, collected from millions of global users, provides rapid detection of new threats as they emerge. Cloud-based analysis supplements local scanning, comparing suspicious files against Avast’s global threat intelligence network.
Independent testing consistently favours Avast’s detection capabilities. Recent AV-Test results show Avast achieving 99.4% zero-day detection and 99.8% widespread malware detection, whilst IObit scores 97.8% and 99.1% respectively. This 1.6% difference in zero-day detection represents significant protection gaps, as zero-day threats pose the greatest risks to users.
Free Version Feature Comparison
IObit Malware Fighter Free provides basic malware scanning and removal without real-time protection. Users can run manual scans to detect and eliminate existing infections, but the programme won’t prevent new infections from occurring. The free version also lacks automatic database updates, requiring manual update checks.
Avast Free Antivirus includes comprehensive real-time protection across multiple shields (File, Web, Mail, Behaviour). This fundamental difference means Avast Free provides active prevention whilst IObit Free offers only detection and removal of existing threats. Avast Free also includes automatic updates, Wi-Fi security scanning, and basic password management.
For users seeking free protection, Avast Free Antivirus delivers substantially more value. IObit Malware Fighter Free serves primarily as a trial version encouraging upgrade to Pro, whilst Avast Free provides genuinely comprehensive protection without payment.
Which Offers Better Value?
Value assessment depends on individual priorities and budget constraints. IObit Malware Fighter Pro costs approximately £15.99 annually for single-PC protection, significantly less than Avast Premium Security’s £29.99 annual price.
For budget-conscious users requiring basic protection, IObit offers adequate security at a lower price point. The 97-99% detection rates, whilst below Avast’s performance, still provide solid protection against most common threats. IObit’s inclusion of system optimisation features (when using Advanced SystemCare) adds value for users wanting all-in-one solutions.
For users prioritising maximum protection, Avast justifies its higher price through superior detection rates, more comprehensive features (firewall, VPN, sandbox), and better cross-platform support. The 99%+ detection rates and advanced threat protection provide peace of mind worth the additional cost for security-conscious users.
The best value option might be Avast Free Antivirus, which costs nothing whilst providing better protection than IObit’s paid version. Supplement Avast Free with IObit’s free utility tools (Uninstaller, Driver Booster) for comprehensive protection and optimisation without monthly expenses.
Pricing Comparison: IObit vs Avast
Understanding pricing structures helps determine which solution fits your budget whilst meeting security needs. Both companies offer free versions, multiple paid tiers, and occasional promotional discounts.
Free Version Limitations
IObit Malware Fighter Free serves primarily as a trial version. Scan functionality works fully, allowing detection and removal of existing threats, but the absence of real-time protection means new infections can occur between manual scans. Database updates require manual intervention rather than automatic downloads. Browser protection and anti-ransomware features remain locked behind the Pro paywall.
Avast Free Antivirus provides substantially more complete protection. All essential shields (File, Web, Mail, Behaviour) operate continuously with real-time protection. Automatic updates ensure current threat definitions without user intervention. Basic ransomware protection, Wi-Fi security scanning, and limited password management come included.
The free version comparison clearly favours Avast, which offers genuine comprehensive protection at no cost. IObit Free functions more as a teaser product demonstrating capabilities whilst encouraging Pro upgrade.
Premium Pricing and Features
IObit Malware Fighter Pro pricing starts at £15.99 annually for single-PC protection, £25.99 for three PCs. The Pro version adds real-time protection, automatic updates, enhanced anti-ransomware with multiple layers of defence, browser protection against malicious websites, and email protection.
Advanced SystemCare Pro costs £16.99 annually and includes IObit Malware Fighter’s engine alongside system optimisation tools. For users wanting both security and optimisation, this bundle provides better value than purchasing products separately.
Avast Premium Security costs £29.99 annually for single-PC protection, £69.99 for ten-device coverage. Premium includes everything from the free version plus advanced firewall, enhanced ransomware protection with automatic backup, Sandbox for safely testing suspicious programmes, Real Site DNS hijacking protection, and unlimited password manager access.
Avast Internet Security (£24.99 annually) sits between free and premium tiers, adding firewall and anti-spam without the Sandbox and Real Site features.
Which Offers Better Value for Money?
Pure price comparison favours IObit, costing approximately 47% less than Avast Premium Security. However, value assessment must consider protection quality alongside cost.
Avast Premium Security’s superior detection rates (99.4% vs 97.8% for zero-day threats) mean better protection justifying the higher price. Additional features like VPN, advanced firewall, and Sandbox provide security layers IObit lacks. Cross-platform support (Windows, Mac, Android, iOS) offers flexibility for multi-device households.
IObit’s lower price appeals to budget-conscious users, students, or those with older computers benefiting from the lightweight system impact. The inclusion of system optimisation tools provides additional value for users wanting performance enhancement alongside security.
For most users, we recommend Avast Free Antivirus (£0) as the best value option. It provides superior protection compared to IObit Malware Fighter Pro whilst costing nothing. Users can then spend money on IObit’s utility tools if desired, creating a powerful combination without the premium antivirus cost.
Expert Verdict: Should You Choose IObit or Avast?
After comprehensive analysis of detection capabilities, features, pricing, compatibility, and user experience, clear recommendations emerge for different user profiles and priorities.
Choose Avast Antivirus If:
Maximum protection remains your priority. Avast’s 99.4%+ detection rate outperforms IObit significantly, particularly for zero-day threats representing the greatest danger. The 1.6% detection advantage translates to substantially better protection over time.
You need comprehensive security features. Firewall protection, VPN access, password manager, and Sandbox testing environment provide security layers IObit lacks. These features create defence in depth, protecting against various attack vectors.
Cross-platform protection matters. Avast covers Windows, Mac, Android, and iOS with consistent protection quality across platforms. IObit focuses exclusively on Windows, leaving other devices unprotected.
You prefer established reputation. Avast’s longer track record in independent testing and larger user base (435 million users globally) provide confidence in reliability and ongoing development.
Advanced threat protection is required. Better protection against ransomware, zero-day exploits, and sophisticated attacks justifies the higher price for users handling sensitive data or facing elevated threat levels.
Best Avast option: Avast Free Antivirus provides excellent protection at no cost, suitable for most home users. Upgrade to Premium Security if you need firewall, VPN, or advanced features.
Choose IObit Malware Fighter If:
Budget concerns limit spending. At £15.99 annually, IObit costs approximately 50% less than Avast Premium whilst still providing solid protection. The 97-99% detection rates, whilst lower than Avast, adequately protect against common threats.
System optimisation matters. Integration with Advanced SystemCare provides comprehensive PC tune-up alongside security protection. Registry cleaning, junk file removal, and startup optimisation maintain system performance.
Simpler interface appeals. IObit’s cleaner, less cluttered design suits users who find Avast’s interface overwhelming. Fewer prompts and notifications create a less intrusive experience.
Windows-only household exists. IObit’s exclusive Windows focus means optimisation specifically for Windows environments rather than cross-platform compromise.
Good-enough protection suffices. For users facing typical threat levels without handling sensitive data, IObit’s solid detection rates provide adequate security at lower cost.
Best IObit option: IObit Malware Fighter Pro for antivirus protection, or Advanced SystemCare Pro for combined security and optimisation.
Our Recommendation: Hybrid Approach
For most users, we recommend combining Avast and IObit strategically rather than choosing exclusively:
Primary antivirus: Avast Free Antivirus (superior protection, zero cost) System utilities: IObit Uninstaller + Driver Booster (safe alongside Avast) Avoid: Running IObit Malware Fighter with Avast (guaranteed conflicts)
This combination provides excellent malware protection from Avast whilst leveraging IObit’s system optimisation strengths, without compatibility nightmares from dual real-time scanners.
Total cost: £0 (Avast Free) + £0-15 (optional IObit utilities) Protection level: Excellent
System performance: Optimised Compatibility: Confirmed safe