From the conversion glossary
Concepts referenced in this article, defined.
CustomFit.ai vs Crazy Egg
Start lifting conversions today.
Run rigorous A/B tests and personalize every visit on Shopify or any storefront โ no engineers required.
Concepts referenced in this article, defined.
Run rigorous A/B tests and personalize every visit on Shopify or any storefront โ no engineers required.
Crazy Egg is a heatmap and session recording tool with basic A/B testing added on. CustomFit.ai is a CRO platform built around full A/B testing, AI-driven personalization, and D2C-native metrics like revenue per visitor and average order value. Crazy Egg shows you where people click. CustomFit.ai tells you which version of your page makes more of them buy. Many D2C brands use Crazy Egg for qualitative insight and CustomFit.ai for experimentation, because the two solve different problems.
| Feature | CustomFit.ai | Crazy Egg |
|---|---|---|
| Shopify native integration | โ | Via JS snippet |
| No-code visual editor | โ | โ (basic) |
| A/B testing | โ (full-featured) | โ (basic) |
| Heatmaps | No | โ (core feature) |
| Session recordings | No | โ |
| Personalization engine | โ | No |
| D2C/ecommerce metrics (AOV, RPV) | โ | No |
| AI-powered optimization | โ | No |
| 1000+ targeting attributes | โ | No |
| 14-day free trial | โ | 30-day trial |
| Starting price | $99/mo | $29/mo |
| Developer required | No | No |
| GDPR compliance | โ | โ |
The main difference between these tools comes down to what question each one answers.
Crazy Egg is a qualitative research tool. It shows you heatmaps of where visitors click, scroll maps of how far they read, session recordings of individual browsing sessions, and confetti maps that break clicks down by traffic source. That tells you what visitors are doing on your pages.
CustomFit.ai is a quantitative optimization platform. It tests different versions of your pages against each other, measures which version drives more purchases, and uses AI to keep improving results. That tells you which version of your page makes more people buy.
A practical workflow is to use Crazy Egg (or a similar tool) to generate hypotheses about what to test, then use CustomFit.ai to test and validate those hypotheses against real revenue outcomes.
CustomFit.ai installs from the Shopify App Store in one click, with no code and no developer. Ecommerce events are tracked automatically. Most brands run their first experiment the same day.
Crazy Egg installs via a JavaScript snippet on any website. The heatmap setup is quick and data starts collecting immediately. Both tools are genuinely no-code for their primary use cases.
CustomFit.ai's testing is built for CRO:
On results, CustomFit.ai customers average an 11% CVR increase: Bellavita saw an 11% CVR lift, Kapiva a 9.48% CVR improvement, and Chargebee a 40% AOV increase.
Crazy Egg includes A/B testing, but it's a secondary feature rather than a core one. You can run simple page tests that compare two variants with basic traffic splitting. There's no AI optimization, no multivariate support, and no revenue-per-variant tracking. It's useful for quick validations but not for a systematic experimentation program.
Crazy Egg's core value is qualitative research: heatmaps, scroll maps, click maps, session recordings, and traffic analysis by source. These are useful for understanding user behavior and generating test hypotheses.
CustomFit.ai doesn't have heatmap or session recording functionality. If you need qualitative behavior data to inform your CRO strategy, Crazy Egg or a dedicated heatmap tool (like Hotjar or Microsoft Clarity) pairs well with CustomFit.ai's experimentation engine.
CustomFit.ai has a personalization layer that Crazy Egg doesn't offer. With 1000+ audience attributes, you can serve different page versions to:
This personalization layer adds to what A/B testing can do, because each segment sees the experience most likely to convert it rather than a single one-size-fits-all winner.
CustomFit.ai tracks revenue per visitor, average order value, add-to-cart rate, and conversion rate by variant and by segment, in real time. You see exactly what each experiment is worth in dollars.
Crazy Egg reports on clicks, scroll depth, and session behavior. Its A/B testing shows conversion rate differences between variants when you configure a conversion goal, but revenue-per-variant tracking requires custom event setup and isn't as tightly integrated with Shopify's ecommerce data.
| Plan | CustomFit.ai | Crazy Egg |
|---|---|---|
| Starter | $99/mo (50K MUV) | $29/mo (30K pageviews) |
| Mid-tier | $249/mo (100K MUV) | $49/mo (75K pageviews) |
| Higher | Enterprise | $99/mo+ |
| Free trial | 14 days, no credit card | 30-day trial |
Crazy Egg is much less expensive at entry level, which reflects its more limited scope. For heatmap-only use cases, the price is competitive. When you need full CRO capabilities such as experimentation, AI optimization, and personalization, CustomFit.ai's $99/month covers more ground.
Crazy Egg is the right tool if your main need is understanding visitor behavior before you start testing. If you want to see where visitors click, how far they scroll, and watch session recordings to spot friction points, Crazy Egg does this well at a low price point. It's also a good choice for early-stage brands that aren't running structured experiments yet and need qualitative insight to know where to focus. Many brands run both, using Crazy Egg for research and CustomFit.ai for testing, and the two don't overlap.
If you're ready to move beyond qualitative research into active experimentation:
Is Crazy Egg good for A/B testing? Crazy Egg has basic A/B testing capability, but it's not a purpose-built experimentation platform. It lacks AI optimization, multivariate testing, revenue-per-variant tracking, and the depth of audience targeting that CustomFit.ai offers. For serious CRO, you need a dedicated platform.
Does CustomFit.ai have heatmaps? No. CustomFit.ai focuses on experimentation and personalization, not qualitative behavior research. For heatmaps, pair CustomFit.ai with Crazy Egg, Hotjar, or Microsoft Clarity (which is free).
Can I use Crazy Egg and CustomFit.ai together? Yes, and it's a good combination. Use Crazy Egg to understand what visitors are doing and generate hypotheses; use CustomFit.ai to test those hypotheses with statistical rigor and measure revenue impact. They don't conflict.
What does CustomFit.ai track that Crazy Egg doesn't? CustomFit.ai tracks revenue per visitor and average order value per experiment variant, predictive buyer intent, and 1000+ audience attributes for segmentation. Crazy Egg tracks click behavior, scroll depth, and session recordings.
How does AI optimization in CustomFit.ai work? CustomFit.ai's AI monitors how each variant performs in real time and progressively allocates more traffic to higher-converting variants. This means you're earning revenue from the better variant during the experiment, not only after you declare a winner, which reduces the cost of testing.
Is Crazy Egg GDPR compliant? Crazy Egg has GDPR tools including cookie consent management. CustomFit.ai is ISO 27001, SOC 2, and GDPR ready.