# Spar

> Spar is the AI CRO engine for ecommerce: it profiles your storefront, finds conversion gaps, and ships A/B tests that compound revenue.

## Product

- [Spar: Turn more visitors into buyers](https://spar.so/): Profile any storefront, find every conversion gap, ship A/B tests, and watch revenue compound.
- [Pricing](https://spar.so/pricing): $500/month self-serve on Pro; Agency and Enterprise scale with number of stores and traffic. 14-day free trial.
- [Example free report](https://spar.so/example-free-report): The exact email Spar sends after the free audit: top conversion changes for one product page with the hypothesis, shopper pain, and mockup behind each, shown for a sample store.
- [Free PDP conversion audit](https://spar.so/free-pdp-audit): Paste a product page URL and get a free emailed audit of the conversion changes worth making, with the hypothesis and shopper pain behind each one.
- [See Spar in action](https://spar.so/example-site): Enter your email and get a link to a live read-only example site.
- [Security](https://spar.so/security): How Spar handles data security, access, and compliance.
- [Privacy](https://spar.so/privacy): Spar's privacy policy.
- [Terms](https://spar.so/terms): Spar's terms of service.

## Features

- [Audit](https://spar.so/features/audit): Spar's storefront audit: scores your site against a rules library and blends GA4, Clarity, and review signals into ranked conversion gaps.
- [Journeys](https://spar.so/features/journeys): Maps every audit finding into scored funnel stages, so you see which stage leaks the most intent and what to fix first.
- [Research](https://spar.so/features/research): Backs every conversion gap with evidence from your analytics, session recordings, and customer reviews, merged into a finding with a confidence score.
- [Inspiration](https://spar.so/features/inspiration): Track competitor and best-in-class storefronts, then search them in plain language to see how top brands handle any page, with an AI summary of each example you can turn into an idea.
- [Pages](https://spar.so/features/pages): Turns each gap into a page-level fix you can preview on your own storefront before it ships.
- [Test](https://spar.so/features/test): Builds the top opportunity into a live A/B test, runs it with sequential statistics, and declares the winner.
- [Notebooks](https://spar.so/features/notebooks): Collaborative notebooks to write up findings, plan the program, and share it with your team.
- [Jade](https://spar.so/features/jade): Spar's AI assistant: ask plain-language questions about your funnel and findings.

## Compare

- [All comparisons](https://spar.so/compare): Spar versus the major A/B testing and CRO tools, side by side.
- [VWO](https://spar.so/compare/vwo): How Spar compares to VWO
- [Optimizely](https://spar.so/compare/optimizely): How Spar compares to Optimizely
- [AB Tasty](https://spar.so/compare/ab-tasty): How Spar compares to AB Tasty
- [Convert](https://spar.so/compare/convert): How Spar compares to Convert
- [Intelligems](https://spar.so/compare/intelligems): How Spar compares to Intelligems
- [Shoplift](https://spar.so/compare/shoplift): How Spar compares to Shoplift
- [Visually](https://spar.so/compare/visually): How Spar compares to Visually
- [Mida](https://spar.so/compare/mida): How Spar compares to Mida
- [session replay tools](https://spar.so/compare/session-replay-tools): How Spar compares to session replay tools
- [a CRO agency](https://spar.so/compare/cro-agency): How Spar compares to a CRO agency
- [Google Optimize](https://spar.so/compare/google-optimize-alternative): How Spar compares to Google Optimize

## Solutions

- [Solutions](https://spar.so/solutions): How Spar fits founders, in-house ecommerce teams, agencies, and Shopify Plus brands.
- [founders](https://spar.so/solutions/founders): Spar for founders
- [agencies](https://spar.so/solutions/agencies): Spar for agencies
- [in-house ecommerce teams](https://spar.so/solutions/in-house-ecommerce): Spar for in-house ecommerce teams
- [Shopify Plus brands](https://spar.so/solutions/shopify-plus): Spar for Shopify Plus brands
- [SaaS teams](https://spar.so/solutions/saas-teams): Spar for SaaS teams

## Platform

- [Shopify A/B testing](https://spar.so/shopify-ab-testing): Shopify A/B testing that finds opportunities, generates reviewed variants, ships tests, and declares winners.
- [Ecommerce experimentation platform](https://spar.so/ecommerce-experimentation-platform): Run a full ecommerce experimentation program: research, prioritize, build, deploy, measure, and compound learnings.
- [CRO agency software](https://spar.so/cro-agency-software): CRO software for agencies: turn client data into prioritized opportunities, approved tests, and client-ready reporting.
- [Shopify conversion audit](https://spar.so/shopify-conversion-audit): Find the conversion leaks in your Shopify store, prioritized by evidence and revenue impact.

## Resources

- [Resources](https://spar.so/resources): Editorial comparisons and curated tool roundups for Shopify CRO and experimentation.
- [Best Shopify A/B testing apps](https://spar.so/resources/best-shopify-ab-testing-apps): The best Shopify A/B testing apps, compared by workflow, testing depth, and who they fit.
- [Best CRO tools](https://spar.so/resources/best-cro-tools): The best CRO tools, assessed across research, prioritization, experiment creation, and measurement, including how much AI each automates.
- [VWO vs Optimizely](https://spar.so/resources/vwo-vs-optimizely): A neutral comparison of two experimentation platforms: VWO and Optimizely.

## Guides

- [Guides](https://spar.so/guides): Practical guides to Shopify conversion rate optimization and experimentation.
- [How to prioritize A/B tests](https://spar.so/guides/how-to-prioritize-ab-tests): A usable test-prioritization scoring model with a worked Shopify example.
- [Shopify conversion rate optimization](https://spar.so/guides/shopify-conversion-rate-optimization): A complete Shopify CRO guide: framework, checklist, and where to start.

## Tools

- [Free CRO tools](https://spar.so/tools): Free A/B testing and conversion calculators: sample size, duration, minimum detectable effect, statistical significance, conversion rate, and revenue per visitor.
- [Sample size calculator](https://spar.so/tools/ab-test-sample-size-calculator): Calculate the sample size per variant needed to detect a target lift at a chosen confidence level and statistical power.
- [Test duration calculator](https://spar.so/tools/ab-test-duration-calculator): Estimate how many days an A/B test must run given traffic, baseline conversion rate, and the lift you want to detect.
- [MDE calculator](https://spar.so/tools/minimum-detectable-effect-calculator): Calculate the minimum detectable effect (the smallest reliably-detectable lift) for an A/B test from traffic, baseline rate, and test duration.
- [Significance calculator](https://spar.so/tools/ab-test-significance-calculator): Test whether an A/B result is statistically significant: enter visitors and conversions per variant to get uplift, p-value, and a verdict.
- [Conversion rate calculator](https://spar.so/tools/conversion-rate-calculator): Calculate conversion rate, average order value, and revenue per visitor from visitors, conversions, and revenue.
- [Revenue per visitor calculator](https://spar.so/tools/revenue-per-visitor-calculator): Calculate revenue per visitor (RPV) from revenue and traffic, and model how RPV gains change total revenue.

## Workflows

- [Run an A/B test](https://spar.so/workflows/run-an-ab-test)
- [Audit a store](https://spar.so/workflows/audit-a-store)
- [Send to your experimentation platform](https://spar.so/workflows/send-to-experimentation-platform)
- [Hand off a report](https://spar.so/workflows/hand-off-a-report)

## Integrations

- [Asana](https://spar.so/integrations/asana): Using Asana with Spar
- [Microsoft Clarity](https://spar.so/integrations/clarity): Using Microsoft Clarity with Spar
- [ClickUp](https://spar.so/integrations/clickup): Using ClickUp with Spar
- [Convert](https://spar.so/integrations/convert): Using Convert with Spar
- [Google Analytics 4](https://spar.so/integrations/ga4): Using Google Analytics 4 with Spar
- [GrowthBook](https://spar.so/integrations/growthbook): Using GrowthBook with Spar
- [Intelligems](https://spar.so/integrations/intelligems): Using Intelligems with Spar
- [Jira](https://spar.so/integrations/jira): Using Jira with Spar
- [Judge.me](https://spar.so/integrations/judge-me): Using Judge.me with Spar
- [Reddit](https://spar.so/integrations/reddit): Using Reddit with Spar
- [Yotpo](https://spar.so/integrations/yotpo): Using Yotpo with Spar