From the conversion glossary
Concepts referenced in this article, defined.
CustomFit.ai vs Crazy Egg
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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 purpose-built CRO platform with 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 โ they 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 |
This is the fundamental difference between these tools:
Crazy Egg is a qualitative research tool. It shows you heatmaps of where visitors click, scroll maps showing how far they read, session recordings of individual browsing sessions, and confetti maps showing clicks by traffic source. This 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 continuously improve results. This tells you which version of your page makes more people buy.
The ideal workflow: 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 โ no code, 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 capabilities are purpose-built for CRO:
Results: CustomFit.ai customers average 11% CVR increase. Bellavita 11% CVR lift, Kapiva 9.48% CVR improvement, Chargebee 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 โ comparing two variants โ 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 systematic experimentation programs.
Crazy Egg's core value is qualitative research: heatmaps, scroll maps, click maps, session recordings, and traffic analysis by source. These tools are genuinely valuable 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's personalization layer is a key differentiator โ one that Crazy Egg simply doesn't offer. With 1000+ audience attributes, you can serve different page versions to:
This personalization layer multiplies the impact of A/B testing by ensuring each segment sees the experience most likely to convert them โ not a one-size-fits-all winner.
CustomFit.ai tracks revenue per visitor, average order value, add-to-cart rate, and conversion rate โ by variant, 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 significantly 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 โ experimentation, AI optimization, personalization โ CustomFit.ai's $99/month delivers substantially more value for what it does.
Crazy Egg is the right tool if your primary 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 identify friction points โ Crazy Egg does this well at a low price point. It's also a good choice for early-stage brands that aren't yet running structured experiments and need qualitative insight to know where to focus. Many brands run both: Crazy Egg for research, CustomFit.ai for testing โ they complement each other without 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 just after you declare a winner โ reducing 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.