Which free Conversion Optimization (CRO) tool is the best?

Based on our editor score and usability tests, the best free-tier tool in the Conversion Optimization (CRO) category is Opti Hub, followed by HeatHub.

Are free marketing tools safe for business?

Yes, vetted free SaaS tools are completely safe. However, they limit monthly usage quotas, team seats, or custom reporting options to encourage upgrading.

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100% Permanent Free Plan List

Best Free Conversion Optimization (CRO) Tools (2026)

Get high-performance Conversion Optimization (CRO) features completely free. We review and rank tools that offer permanent free subscription tiers.

Vetted Permanent Free Software

Found 30 free tools

Opti Hub

A next-generation platform for a/b testing optimized for high-velocity marketing pipelines.

A/B TestingDynamic A/B Split Testing EngineUX Survey Widget Builder with templates

🎁 Free Tier Advantage: Dynamic A/B Split Testing Engine

Read Review Start Free

HeatHub

A next-generation platform for heatmaps & session recordings optimized for high-velocity marketing pipelines.

Heatmaps & Session RecordingsInteractive Funnel Cohort Drop-off MapBehavioral Exit-intent popups trigger

🎁 Free Tier Advantage: Interactive Funnel Cohort Drop-off Map

Read Review Start Free

A/BFlow

A next-generation platform for user feedback surveys optimized for high-velocity marketing pipelines.

User Feedback SurveysDynamic Form Field Drop-off TrackersBehavioral Exit-intent popups trigger

🎁 Free Tier Advantage: Dynamic Form Field Drop-off Trackers

Read Review Start Free

A/BLoop

A next-generation platform for landing page builders optimized for high-velocity marketing pipelines.

Landing Page BuildersInteractive Funnel Cohort Drop-off MapBehavioral Exit-intent popups trigger

🎁 Free Tier Advantage: Interactive Funnel Cohort Drop-off Map

Read Review Start Free

ClickFlow

A next-generation platform for heatmaps & session recordings optimized for high-velocity marketing pipelines.

Heatmaps & Session RecordingsDynamic A/B Split Testing EngineUX Survey Widget Builder with templates

🎁 Free Tier Advantage: Dynamic A/B Split Testing Engine

Read Review Start Free

Hotjar

The standard web heatmaps and screen recordings software built for conversion rate auditors.

HeatmapsUser RecordingFeedback Widget

🎁 Free Tier Advantage: 35 Daily Sessions

Read Review Start Free

VWO (Visual Website Optimizer)

A high-performance CRO marketing tool designed to optimize campaign metrics, automate database workflows, and drive commercial conversions.

A/B Testing ExperimentsVisitor Heatmaps SyncWYSIWYG Visual Editor

🎁 Free Tier Advantage: 1 User included

Read Review Start Free

Lucky Orange Visitor Recording

A high-performance CRO marketing tool designed to optimize campaign metrics, automate database workflows, and drive commercial conversions.

Dynamic HeatmapsReal-time Live Chat WidgetConversion Funnels

🎁 Free Tier Advantage: 1 User included

Read Review Start Free

Mouseflow Recording

A high-performance CRO marketing tool designed to optimize campaign metrics, automate database workflows, and drive commercial conversions.

Friction Score AlarmsDynamic User HeatmapsForm Analytics Funnels

🎁 Free Tier Advantage: 1 User included

Read Review Start Free

Inspectlet Sessions

A high-performance CRO marketing tool designed to optimize campaign metrics, automate database workflows, and drive commercial conversions.

Rage Click ReplaysDynamic Click HeatmapsForm Performance Charts

🎁 Free Tier Advantage: 1 User included

Read Review Start Free

UsabilityHub Panel

A high-performance CRO marketing tool designed to optimize campaign metrics, automate database workflows, and drive commercial conversions.

Five Second TestsFirst Click HeatmapsDirect Design Feedback

🎁 Free Tier Advantage: 1 User included

Read Review Start Free

VWO (Visual Website Optimizer) Plus

A high-performance CRO marketing tool designed to optimize campaign metrics, automate database workflows, and drive commercial conversions.

A/B Testing ExperimentsVisitor Heatmaps SyncWYSIWYG Visual Editor

🎁 Free Tier Advantage: 1 User included

Read Review Start Free

Lucky Orange

All-in-one conversion optimization tool linking session replays, dynamic heatmaps, and chat.

Session Replay LiveDynamic HeatmapsBudget CRO Suite

🎁 Free Tier Advantage: Access to core session replay live features

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Mouseflow

User experience analytics tool tracking session recordings, heatmaps, and form friction spots.

Form Field FrictionSession Recordings ReplayUX Heatmaps

🎁 Free Tier Advantage: Access to core form field friction features

Read Review Start Free

Landingi

Flexible landing page builder featuring advanced design freedom, A/B testing, and integrations.

Design Freedom PageAgency Landing PagesVisual Editor Custom

🎁 Free Tier Advantage: Access to core design freedom page features

Read Review Start Free

Optimizely Pro

Elite enterprise experiment engine powering server-side feature flags and visual web testing.

Server-Side SDK TestsEnterprise Feature FlagsZero Layout CLS

🎁 Free Tier Advantage: Access to core server-side sdk tests features

Read Review Start Free

Hotjar CRO Suite

Aggregates real-time team workflow synchronization, campaign event monitors, and deep attribution analytics.

Scroll Depth HeatmapsDynamic PopupsSession Recordings

🎁 Free Tier Advantage: Core tracking nodes for scroll depth heatmaps

Read Review Start Free

Mouseflow Pro

Aggregates real-time team workflow synchronization, campaign event monitors, and deep attribution analytics.

Scroll Depth HeatmapsSession RecordingsClick Analytics

🎁 Free Tier Advantage: Core tracking nodes for scroll depth heatmaps

Read Review Start Free

Lucky Orange Pro

Delivers secure technical auditing processes, automated data exports, and semantic group categorization dashboards.

Scroll Depth HeatmapsDynamic PopupsSession Recordings

🎁 Free Tier Advantage: Essential toolset for scroll depth heatmaps

Read Review Start Free

VWO Enterprise

Provides localized target databases, dynamic competitor metric tracking pipelines, and secure API data connectors.

Server A/B TestingCookie-free TaggingDynamic Heatmaps

🎁 Free Tier Advantage: Access to core server a/b testing features

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VWO

A premium MarTech analytics gateway fully optimized for custom B2B campaign workflows.

Automated vwo operational workflowsIntelligent campaigns telemetry analytics

🎁 Free Tier Advantage: Access to core automated vwo operational workflows features

Read Review Start Free

Convert.com

A premium MarTech analytics gateway fully optimized for custom B2B campaign workflows.

Automated convert.com operational workflowsIntelligent campaigns telemetry analytics

🎁 Free Tier Advantage: Access to core automated convert.com operational workflows features

Read Review Start Free

GrowthBar

A premium MarTech analytics gateway fully optimized for custom B2B campaign workflows.

Automated growthbar operational workflowsIntelligent campaigns telemetry analytics

🎁 Free Tier Advantage: Access to core automated growthbar operational workflows features

Read Review Start Free

ConvertBee

A next-generation platform for heatmaps & session recordings optimized for high-velocity marketing pipelines.

Heatmaps & Session RecordingsDynamic A/B Split Testing EngineInteractive Funnel Cohort Drop-off Map

🎁 Free Tier Advantage: Dynamic A/B Split Testing Engine

Read Review Start Free

Trig Test

A next-generation platform for a/b testing optimized for high-velocity marketing pipelines.

A/B TestingDynamic A/B Split Testing EngineSession Playbacks & UX Heatmap Generator

🎁 Free Tier Advantage: Dynamic A/B Split Testing Engine

Read Review Start Free

Splithub

A next-generation platform for a/b testing optimized for high-velocity marketing pipelines.

A/B TestingDynamic A/B Split Testing EngineDynamic Form Field Drop-off Trackers

🎁 Free Tier Advantage: Dynamic A/B Split Testing Engine

Read Review Start Free

ConvertTest

A next-generation platform for user feedback surveys optimized for high-velocity marketing pipelines.

User Feedback SurveysDynamic Form Field Drop-off TrackersSession Playbacks & UX Heatmap Generator

🎁 Free Tier Advantage: Dynamic Form Field Drop-off Trackers

Read Review Start Free

Convertloop

A next-generation platform for landing page builders optimized for high-velocity marketing pipelines.

Landing Page BuildersDynamic A/B Split Testing EngineSession Playbacks & UX Heatmap Generator

🎁 Free Tier Advantage: Dynamic A/B Split Testing Engine

Read Review Start Free

A/B Spot

A next-generation platform for landing page builders optimized for high-velocity marketing pipelines.

Landing Page BuildersUX Survey Widget Builder with templatesDynamic A/B Split Testing Engine

🎁 Free Tier Advantage: UX Survey Widget Builder with templates

Read Review Start Free

UXflow

A next-generation platform for user feedback surveys optimized for high-velocity marketing pipelines.

User Feedback SurveysDynamic A/B Split Testing EngineSession Playbacks & UX Heatmap Generator

🎁 Free Tier Advantage: Dynamic A/B Split Testing Engine

Read Review Start Free

Important: Limitations of Free Plan Software

Free subscription options are outstanding for bootstrapping creators and startups to validate products. However, keep in mind that free tiers typically feature strict caps on monthly volume limits (such as email send limits or monthly analytics visitor counts). When your business scales, upgrading to paid plans ensures you have full developer API keys, advanced custom reporting worksheets, and SLA priority support.