VWO vs. Optimizely
Looking for a Comprehensive A/B Testing Solution?
Optimizely lets you manage and run A/B tests and personalize your website for visitors. VWO provides a data-driven testing solution that connects every step in the visitor journey to impact your conversion rates.View Feature Comparison
Page Load Time
We never slow you down
VWO uses asynchronous code to serve your campaign data, compared to synchronous code used by Optimizely.
Simply put, asynchronous means that the code will contact VWO servers in the background, download, and process the test package while the rest of your page continues to load and render in the browser as usual. It’s what keeps your visitors’ screens from flickering.
Optimizely’s synchronous code makes the browser wait until Optimizely can deliver the test package, long enough for visitors to notice.
And in the improbable case of our servers being unavailable, the original page gets loaded, ensuring that your visitors' experiences remain unaffected.
Note: Optimizely offers asynchronous code however, they recommend synchronous code.
Configured to deliver data-driven results
SmartStats is engineered to compute accurate results for all your goals. It is configured to help you take the right business decisions without worrying too much about the statistics. We got you covered there while you focus on more important business goals.
It gives easy to digest metrics along with recommendations so that you can stop looking up the definition of p-value or verify statistical significance but only focus on what your next steps should be.
You don’t have to worry about making wrong decisions based on less data. Your results are valid whenever you look at them.
The right match for your business
Whatever your business needs are, VWO can deliver.
Flexible pricing model to accommodate your unique needs
If your team wants to run tests on multiple domains from a single account, that’s not a problem. VWO has a flexible pricing plan that allows you to pay by the average number of unique monthly visitors on your website, no matter how many domains you run tests on within that visitor quota.
We help you at each step of the way
Spend more time producing results than looking for answers, with in-app guided onboarding and up-to-date knowledge base of all the information you would ever need.
24x7 email, phone, and chat
Better still, our dedicated Customer Success Managers will help you set up your Enterprise account and get testing immediately.
However, if you do need to contact VWO, you can count on our hands-on support across multiple channels, whenever you want.
Director of Growth Marketing
Terrific support! Extremely responsive and helpful as always. We've been clients of VWO for 3+ years and couldn't be happier with your platform. Keep up the great work!
You have a wonderful support team! I really appreciate the fast response and the professional assistance. Thank You!
Trusted by 2500+ brands across 90+ Countries
Colart chose VWO over Optimizely
While evaluating between VWO, Optimizely and other A/B testing tools, Colart, one of the leading art brands in the world, found VWO was the right web testing and conversion optimization solution for their business.
Read this case study to find out why they chose VWO.
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It was important to select an all-features-in-one tool that allowed testing on multiple domains from a single platform."
Patxi GadanonSenior Web Manager, Colart
See how Optimizely compares with VWO
|Testing Quota Usage||Use as you like||Restricted usage|
|Visitor Counting Logic||Count once per month across all campaigns (In the CRO platform)||Count once per month across all campaigns|
|Server-Side Testing||Available only in Optimizely X|
|Statistics||Bayesian||Sequential Statistical Method|
|Support||Available 24x7 (email, phone, chat, and in-app)||Limited support (separate priority support add-on)|