CustomFit AI A/B Testing & CRO

Nov. 13, 2025

We’ve been using CustomFit.ai on our Shopify store for a few months now, running multiple A/B tests and personalisation experiments. The setup is incredibly smooth changes go live instantly and there’s absolutely no impact on site speed. The platform has helped us drive clear improvements in engagement and conversions, and we’ve been able to execute experiments faster than ever. A special shoutout to their team they’re super responsive, proactive, and always quick to resolve any issues. Even our last-minute or ad-hoc requests have been handled promptly without any follow-up needed. Overall, a great partner for growth and experimentation. Highly recommended!

Oct. 7, 2025

this is hands down the best A/B testing app out there. i had the chance to get in touch with the founder- Ashwin, and the guy is a gem. so helpful and informative and will help out any way he can

July 3, 2025

We've had a great experience using CustomFit.ai on our website. The platform has been incredibly helpful for running a variety of A/B tests, allowing us to experiment with different content, layouts, and user journeys seamlessly. What truly stood out is the performance and reliability — the testing outcomes were accurate and actionable, helping us make confident decisions that improved our conversion rates. CustomFit.ai gave us the flexibility to personalize user experiences and optimize them in real-time, which had a direct impact on our business growth.

May 28, 2025

May 23, 2025

I was amazed at how quickly we could start using CustomFit.ai. Setting up A/B tests and personalizing our pages was straightforward, with no coding required. The performance is excellent, and the best part- support team is always just a message away and super helpful!

April 22, 2025

The support team at CustomFit.ai is amazing! Super responsive, always helpful, and they’ve made our experience so much smoother. It’s great knowing we can reach out anytime and get quick answers.

Feb. 17, 2025

We're huge fans of CustomFit.ai at our Shopify store. It's made A/B testing and personalization so much easier and more effective. I have tried using A/B platforms earlier and have found them complex for a non-techie. The platform is super fast & very easy to use. It doesn't cause any annoying flicker. And whenever we have a question, their support team is always quick to help.

Jan. 7, 2025

Dec. 12, 2024

CustomFit.ai is an incredible tool for any Shopify store looking to optimize their customer experience. We’ve used it for both A/B testing and personalization, and it’s been fantastic. The platform is fast, easy to navigate, and our site runs smoothly with no flicker. Customer support is always just a message away and super helpful

Nov. 29, 2024

Oct. 28, 2024

```"CustomFit.ai is the perfect tool for anyone looking to improve their Shopify store through A/B testing and personalization. It’s fast, doesn’t require any coding, and our site runs flawlessly with no flicker. The customer support team has been a huge help, always there when we need them." ```

Sept. 2, 2024

CustomFit.ai has been a game-changer for our store. We can run detailed A/B tests and personalize content without needing a developer. The platform is super quick, and our site runs without any flicker, which is crucial for us. Plus, their customer support is exceptional—they always have our back.

Aug. 28, 2024

5 out of 5

Aug. 27, 2024

CustomFit.ai is an incredible tool for any Shopify store looking to optimize their customer experience. We’ve used it for both A/B testing and personalization, and it’s been fantastic. The platform is fast, easy to navigate, and our site runs smoothly with no flicker. Customer support is always just a message away and super helpful.

Aug. 22, 2024

Great tool, amazing team. If you are scaling up, this tool is a must for your Shopify store.

June 8, 2023

I recently had the pleasure of using CustomFit for our D2C brand, Healofy, and I must say it has improved our marketing strategy. As a hardcore marketer at Healofy, I'm always on the lookout for tools that can enhance our brand's performance, and CustomFit has exceeded my expectations. The user-friendly no-code approach to website personalization and A/B testing has made it easy for us to create tailored experiences for our customers. With seamless integration into Shopify, getting started was a breeze. Since implementing CustomFit, we've experienced decent growth in conversions, AOV and increased customer engagement.