Blog /A/B Testing

Best Google Optimize Alternatives When It’s Time to Make a Change

10th Mar 2022 – Best Google Optimize Alternatives When It's Time to Make a Change

Google Optimize is great — up to a point.

When your experimentation program grows past a certain stage and you have a firmer grip on A/B testing, you’ll need alternatives to Google Optimize.

Honestly, on the price tag level alone, nothing is as sweet as free. But then, the benefits you stand to gain from a paid testing tool that’s capable of supporting your optimization needs make it worth it.

Don’t believe me? Let’s dive deep into the strengths and weaknesses of Google Optimize and show you other options. Then, you can compare notes and find the best option for you.

What is Google Optimize?

Google Optimize homepage
Google Optimize homepage (source)

Optimize is Google’s free web experimentation and optimization tool. Apart from A/B testing, you can also run redirect, personalization, multivariate, and banner tests on Google Optimize (GO).

It’s great for beginner testers with a simple UI and many of the most basic functions to run simple tests. When you want to use GO for bigger tests, you’ll hit the infamous roadblocks:

  • Only 5 tests at a time
  • Only 3 goals at a time
  • Only test websites, not apps
  • Only test for 90 days maximum

It’s an amazing tool, no doubt, especially when you want to get your feet wet in A/B testing without committing some funds.

Google Optimize is more of a freemium tool; a limited-feature version of Optimize 360, Google’s complete beefed-up optimization tool. Google Optimize 360 has none of those pesky limits and has customer support (and it comes with a price tag).

Both are part of the Google Marketing Platform.

Why Do Agencies & Businesses Invest in Google Optimize?

Even with those limitations (and other reasons), GO is still a tool of choice for some agencies and businesses. And rightfully so. There are use cases where GO is an ideal choice.

Check them out:

  • Learning A/B testing: If you’re just starting out A/B testing and want to get a sense of how it works, it makes sense to use a tool that doesn’t cost money.

    Because chances are, you may not be able to generate an ROI for your testing at that stage. Any ROI you get from free products will always be 100%, as long as you learn something.
  • Proving a design idea or other proposed idea: Instead of arguing back and forth about whether a design idea will work with your audience, you can just test.

    Also, it works if you have a small business without the marketing budget to pay for a tool. This way, you can decide if a certain change helps or hurts your bottom line before implementing the change.
  • Experimentation program not mature enough: If you’re only running 1 experiment a month, it wouldn’t make sense to pay for a tool. If your experimentation program grows to where you have to run several tests a week, then Google Optimize will become too small to contain your needs.
  • Digging for insights for executive buy-in: If you’re trying to convince C-suite and other stakeholders that experimentation should become part of your company culture, you’ll need to demonstrate that without a budget. That’s where a free A/B testing tool like Google Optimize comes in.

And these are features that make these possible…

Best Google Optimize Features

These are the essentials of most experimentation programs and GO has them. The only limitations come when you want to run a number of these tests at the same time. But apart from that, these tests are there for you to use free of charge.

  • Visual (WYSIWYG) Editor:

You don’t have to hardcode your way to any test, you can just use the visual editor to make simple changes. Whether you’re editing your headline or changing the position of a page element, you can do without writing a line of code.

  • In-Built Code Editor:

What if you don’t mind writing the code? GO comes with HTML/CSS/JS code editor for your added layer of flexibility. It’s just maxed at 10,240 characters.

  • Simple Beginner-Friendly UI:

Lots of features come with lots of options. Google Optimize is lightweight with only the essential features you need to run A/B, A/B/n, MVT, and split tests. So, for a beginner is a focused environment that doesn’t make your learning curve steeper.

  • Activity Log and Experiment Scheduling:

Track changes for team collaboration or just to know what you did in the past. Also, you can manage start and end dates for your experiments ahead of time.

Of course, it makes perfect sense that Google Analytics and Optimize will have the smoothest sync. But that’s the case 100% of the time. Regardless, this is one of the easiest integrations to implement. Keep in mind that you can’t use Google Analytics segments for targeting with the free version, only with Optimize 360 (which costs quite a bit).

These are great, but how does Google Optimize handle privacy?

Google Optimize & Privacy

Privacy concerns are rising and strict regulations are in play. The fines are heavy, so you’ll want to be on the safe side when A/B testing, even if it’s free.

Many A/B testing vendors are gearing up for when cookies will no longer be allowed and their customers, the marketers, have got questions. You can experiment and respect visitor privacy at the same time. Convert does it.

However, is that the case with Google Optimize?

Google continues to roll out privacy-safe solutions that respect user consent choices. You’ll find them stating that they comply with local data protection laws in the country where their products and services are used.

And when handling users’ data involves third parties? They add they will work with third parties and data protection authorities to keep users’ data safe and respect consent.

Main Issues with Google Optimize

Although Google Optimize is great, there are issues that make CRO specialists and marketers shift to other tools. Such as:

1. Feature limitations

Google Optimize vs Google Optimize 360
Google Optimize vs Google Optimize 360 (source)

Google Optimize is a throttled version of Google Optimize 360 as you can see in the comparison chart above.

Which makes perfect sense. The free version can only take you so far in a small experimentation program. You’ll hit a wall when you want more than:

  • 5 tests at a time
  • 3 goals at a time
  • 90 days runtime
  • 16 variable in multivariate tests
  • 10,240 characters in the code editor

And if you want to test complex features, add goals while your test is running, and customize a Google Analytics audience, you’re just going to bump into more blockades.

We have migrated, all the customers we initially planned to migrate (two of them). Thanks to the no-limits on Convert compared to Google Optimize. If it was not for Convert we would not have been able to retain those customers.

Jonny Longden
Jonny Longden


2. The sampling issue

When you have a lot of web traffic (i.e. million of visitors), running tests and extracting results for those tests will demand significant resources on the part of your tool.

A free tool runs on computing, network, and storage resources and for such a test, you’ll be drawing a lot of those resources. They can save on those resources with sampling – reports will load faster and they’ll spend less on infrastructure.

Google has denied sampling occurs on the free and paid version of Optimize and Analytics but optimizers still encounter the problem:

At Speero, most of the sites we work with have a rather large number of visitors, generating millions of hits every month. Naturally, most of those sites have Google Analytics and not all of them have the premium GA360 version. This means that sampling is a problem we deal with on daily basis, especially when analyzing the results of A/B tests using custom segments. Be it Optimize or some other tool, sampling is still a problem when it comes to analyzing this data in Google Analytics. That being said, the numbers you see within Google Optimize’s reports are not sampled but those don’t allow for any advanced analysis. While data in Google Optimize reports isn’t sampled and it doesn’t say it clearly in its ToC, I believe that this data is still being affected by the data collection limits mentioned in Google Analytics ToC. This belief is supported by the fact that Optimize is based on the same dataset as is Google Analytics and we’ve seen some rather weird numbers in Optimize for sites that receive massive amounts of hits (100 million and more a month).

Silver Ringvee
Silver Ringvee

CTO, Speero

Furthermore, there is another pitfall that fewer optimizers know of or pay attention to. And that is the introduction of the “user” metric toggle button to the Google Analytics ecosystem. With the help of this we can in theory pull valuable user level data that session based metrics don’t provide.


  1. This toggle button is set to “ON” by default, contrary to the documentation. 
  2. The user metric setting does not provide an exact count of users, it is a probabilistic estimate. 
  3. GA4 has done away with the session based setting. Which means probabilistic counts are all you get when you shift over to GA4. 

Georgi has done an exceptional job of explaining this in his blog.

Sampling or no sampling, Google Optimize working on the same dataset as Google Analytics 4 might spell more inaccuracies for experimentation experts using the free tool.

3. Lack of customer support

Being a free tool, there’s no reason for Google to pay a dedicated support team to help users with problems when using Optimize. Although they offer an extensive knowledge base and a community to answer questions you can’t find answers to, this means your solutions arrive too late.

However, you can call, get live chat and email support, but that’s only available on the paid 360 version.

Other A/B testing tools, like Convert Experiences, offer 24/7 support via live chat, email, and phone calls. You get to talk to a real human being without jumping through several hoops.

4. Tested visitor count inflation

When someone visits your site in the morning and logs back in 5 hours later, Google Optimize and Analytics records that as two unique visits. That’s because sessions are recorded as lasting 30minutes to 4 hours.

Why so short? To minimize the use of resources for a free tool.

You can imagine how this inflates the number of unique visitors and ruins your conversion rate.

5. Problem with flicker

Flicker is when a visitor gets a glimpse of the original page before the variant loads on their browser. This is a common problem, but most testing tool vendors have figured it out and now offer flicker-free testing.

But Google Optimize’s solution is quite different. Instead of being an in-built feature, it requires you to install an anti-flicker snippet that affects your page loading time significantly. This problem won’t only mess with the user experience but will also impact your site’s SEO.

6. Real-Time: Reality or Illusion?

There is no doubt here. Google’s documentation states this, loud and clear. There can be up to a 12-hour delay between the time an event (conversion) occurs in the Google Optimize served experiment, and when it shows up in the reports. 

This is because the data is first pushed to Analytics for processing, and then sent to the Google Optimize reports. 

Can you really wait for half a day to get insights (when needed)? Or to potentially spot a problem in the experiment set up? Isn’t A/B testing supposed to make you agile?

How to Choose a Google Optimize Alternative

To make the right choice for your experimentation needs, follow these 3 steps:

  1. Take note of what’s missing for you in Google Optimize:

Find what matters most to you in advancing your conversion rate optimization program but isn’t on Google Optimize.

Are they limitations to a higher test velocity? Do you need access to expert human support to help your team grow faster? Is it transparent pricing or do you want to have a stronger grip on privacy matters?

Whatever it is, write it down. You’ll need that to go through a list of Google Optimize alternatives.

  1. Compare the alternatives:

I’ve handpicked these alternatives below considering that you’re coming from a free A/B testing platform with a beginner-friendly UI. So, they’re mild step-ups but with full-range features, so you can put limits behind you.

We all know that the cost of a tool can be an important consideration when choosing which one to use. We put together this handy guide with 51 different CRO tools and their prices so you don’t have any trouble deciding!

  1. Compare the alternatives:

You would’ve discovered 2 or 3 tools that you’d like to try. Before you commit to learning how to use a fresh tool and paying for it, find out if it’s right for you through a demo or free trial.

Newsflash: There’s something we’re introducing to help with your assessment…

Consciousness Quotient (CQ): It is a measure of how much a company or brand cares about its impact on the planet.

For example, Patagonia’s popular “anti-growth” strategy has sustainability at its core.

In the context of A/B testing or CRO tools, this will be a company that contributes to offsetting the threats facing our planet. This is more than just using less energy and recycling everything.

It involves adopting and sticking strongly to sustainable business practices, supporting eco-friendly partners, and minimizing carbon footprint (into negative values, if they can). This way, when you use such tools, you’re optimizing and experimenting in a way that keeps the planet healthy.

Now, what are those alternatives? Considering where you’re coming from and your unique needs, what’s the most natural and beneficial A/B testing tool to switch to?

Top 8 Google Optimize Alternatives

Convert Experiences
Zoho Pagesense
Explore by Omniconvert
VWO Testing
Adobe Target
Dynamic Yield

1. Convert Experiences

Convert Experiences is a significant leap from Google Optimize – you get advanced features to advance your experimentation program, at one of the most affordable prices in the CRO industry, and a support team that prioritizes your success.

When you’re looking to stay ahead of privacy and data protection regulation, secure a cookieless future, enjoy over 100 integrations with other tools in your martech stack, and blast through all your prior testing limitations, switch to Convert.

TrustRadius score: 9.4 out of 10 based on 17 reviews (similar ratings on G2: 4.7/5 from 47 reviews).

Pricing: Starts at $699/mo. For every additional 100k visitors, the cost increases by $199.

Got free plan? Yes. You can test run for 14 days without having to give up your credit card info.

Got customer support? Yes, including live chat, email, and phone calls. And there’s a knowledge base as well.

Integration to Google Analytics: Yes.

Test limitations: Only 5 active domains on the kickstart plan.

Client-side or server-side? Both. You get a client-side WYSIWYG editor and also can run custom JS on the server side.



  • The kickstart plan only offers basic post segmentation

Consciousness Quotient (CQ): Convert is built on a foundation of care for people and the planet we call home.

That’s why we’re at the forefront of privacy consciousness and are fully eco-friendly. We are 15x carbon negative, plant trees, donate to charities, promote diversity, and much more.

What people say about using Convert Experiences:

2. Zoho PageSense

PageSense is the conversion optimization and personalization platform of Zoho. It helps you track and analyze visitor data, optimize and personalize their experience, and experiment with ways to improve the conversion at each stage of your funnel.

G2 rating: 4.1 out of 5 stars based on 20 reviews (none on TrustRadius).

Pricing: As low as $16/mo when billed annually.

Got free plan? Yes, there’s a 15-day free trial.

Got customer support? Yes, but reviews don’t speak nicely about it. Long response time is the common theme.

Integration to Google Analytics: Yes.

Test limitations:

  • Maximum of 10 projects and 50 goals
  • No advanced code editor

Client-side or server-side? Only client-side.


  • One of the cheapest A/B testing tools available
  • Integrates with Mixpanel, Google Ads, Intercom, and more
  • Easy-to-use funnel optimization and testing features


  • The support team might not be top-notch according to reviews
  • Can be difficult to set up your first test

Consciousness Quotient (CQ): They use state-of-the-art green data centers all over the world. They also have a free school that teaches skills for software careers. To top it off, they pay their students and employ them automatically.

What people say about using Zoho PageSense:

3. Explore by Omniconvert

Explore by Omniconvert is one of 4 in a suite of tools for eCommerce growth. The other 3 complements the A/B testing function of Explore. Explore on its own can help with optimizing your customer journeys and you don’t have to be in the eCommerce industry to use it either.

TrustRadius score: 10/10 from 2 reviews (on G2, that’s 4.5 out of 5 stars based on 72 reviews).

Pricing: Plans start at $167/mo when billed annually.

Got free plan? Yes.

Got customer support? Yes, live chat, a 30 minute 1-on-1 onboarding, along with a resource hub.

Integration to Google Analytics: Yes.

Test limitations:

  • Cannot run two separate tests on one page at the same time
  • Better suited for eCommerce use cases

Client-side or server-side? Only client-side testing.


  • Great customer support
  • It’s easy to set up your first test with the onboarding guide
  • Comes with multiple segmentation, targeting, and personalization features


  • Requires solid HTML/CSS knowledge
  • It costs a substantial amount once you get to use it

Consciousness Quotient (CQ): I couldn’t find any info to help assess their CQ.

What people say about using Explore by Omniconvert:

4. VWO Testing

VWO stands for Visual Website Optimizer. They are majorly an A/B testing tool but also offer other marketing features that help with behavior analysis, experimentation, and re-engagements.

Coming from Google Optimize, this tool would be fairly easy to use for scaling your optimization program.

TrustRadius score: 6.6 out of 10 based on 99 reviews (but that’s 4.2/5 on G2 based on 281 reviews)

Pricing: Starts at $199/mo. For additional features, contact the support team for custom pricing.

Got free plan? Yes, they have a 30-day free trial.

Got customer support? Yes, via email, phone call, and resource page.

Integration to Google Analytics: Yes.

Test limitations:

  • The starter plan is only for 10K visitors
  • MVTs not included in the basic plan

Client-side or server-side? Client-side only.


  • There are customization options to adapt your test to different scenarios
  • Easy to plan and execute tests with dev help
  • Can track long-term goals
  • Test grouping available


  • There’s quite a learning curve to grasp the full range of VWO

Consciousness Quotient (CQ): Not much information is available for this. But they’ve shown generosity during COVID.

What people say about using VWO Testing:

5. Kameleoon

Kameleoon is one of the top A/B testing platforms for marketers and a solid Google Optimize alternative. It’s a step up in functionality, UI, personalization settings, and integrations.

They’re big on data protection and privacy, that’s why Healthcare and Fintech companies prefer it for optimizing engagement and conversions.

TrustRadius score: 9 over 10 from 48 reviews (G2 rating is 4.7 out of 5 stars from 27 reviews).

Pricing: Custom pricing is available after you contact the sales team.

Got free plan? Yes.

Got customer support? Yes. An account manager is available as well.

Integration to Google Analytics: Yes.

Test limitations:

  • Only email alerts are available
  • Cannot create archive folder
  • Older browsers are excluded from the tests, e.g. IE7

Client-side or server-side? Both. It has a WYSIWYG editor and a code editor.


  • No-code visual (WYSIWYG) editor
  • Integrates smoothly with other tools
  • Has advanced anti-flicker technology
  • Accurate planning and test execution


  • The visual editor loads slowly
  • Need developers to help with implementing complex scenarios
  • Reporting dashboard needs more personalization

Consciousness Quotient (CQ): I didn’t find any information to prove Kameleoon’s CQ.

What people say about using Kameleoon:

6. SiteSpect

SiteSpect is known for its speed, although it’s only slightly faster than Convert Experiences and significantly faster than VWO (about 1.3secs) and other tools on this list. It’s a tool of choice for enterprises with high traffic sites — not ideal for beginners in A/B testing.

TrustRadius score: 8.0 out of 10 from 10 reviews (the TrustRadius reviews are old but the star rating is similar on G2 with 4.4 out of 5 from 53 reviews).

Pricing: You’ll have to contact sales for custom pricing.

Got free plan? Yes.

Got customer support? Whether free or paid, you get customer support via email and phone. You can also dive into the knowledge base for more help content.

Integration to Google Analytics: Yes, it’s available.

Test limitations: N/A.

Client-side or server-side? Both.


  • Great for security-conscious teams
  • Support all markup languages, style sheets, and scripting languages
  • No flicker
  • You don’t need to modify the production version of your code


  • There’s a learning curve to get started
  • You may need the help of a developer to set up your tests

Consciousness Quotient (CQ): They sponsor charity projects.

What people say about using SiteSpect:

7. Adobe Target

Adobe Target is another enterprise-level testing tool that works hand-in-hand with Adobe’s analytics tool. One does the personalization and the other does the segment targeting to deliver personalized digital experiences to visitors.

TrustRadius score: 7.3 out of 10 based on 35 reviews (G2 rates it 3.8 stars from 29 reviews).

Pricing: Custom pricing is only available after filling out a form and talking to the sales team.

Got free plan? No.

Got customer support? Yes, with video tutorials and a knowledge base.

Integration to Google Analytics: Yes, but you’ll need dev help.

Test limitations:

  • It is only available to customers of Adobe’s analytics tool, part of the Adobe Marketing Cloud
  • You’ll need a developer to integrate with Google Analytics

Client-side or server-side? Both.


  • Easy to use UI
  • Automated personalization, easy to use even for beginners
  • Has experience targeting with the help of AI
  • Can execute multiple tests at the same time
  • Easy to get a hang of it with a setup and testing walkthrough


  • You can’t test it for free
  • It’s quite pricey
  • It’s best for Adobe Analytics, not Google Analytics
  • Need high traffic volume to get the optimum performance

Consciousness Quotient (CQ): They champion product innovations that protect the environment, work in sustainable buildings, promote diversity in the workplace, run community action programs, and more.

What people say about using Adobe Target:

8. Dynamic Yield

Dynamic Yield

Dynamic Yield is an experimentation platform for high-volume sites for A/B testing, omnichannel personalization, predictive test improvement via machine learning, and other features. It’s another tool of choice for enterprise experimentation programs.

TrustRadius score: 8.9/10 based on 79 reviews (while G2 rating is 4.3 out of 5 stars from 82 reviews).

Pricing: You talk to the sales team to get your custom pricing.

Got free plan? You’ll have to start with a product demo.

Got customer support? Yes, you can talk to support via phone call and email. There’s also a knowledge base to help with installation.

Integration to Google Analytics: Yes, that’s one of its supported integrations.

Test limitations: Best suited for enterprise-level ecommerce.

Client-side or server-side? Both


  • Has full stack integration
  • Supports omnichannel testing and tracking
  • Great support team and learning center
  • Advanced personalization that can run predictive targeting of messages


  • Doesn’t have a seamless sync with analytics
  • You may need the help of a developer to get set up

Consciousness Quotient (CQ): Dynamic Yield gives free access to charities, non-profits, and minority-owned small- and medium-sized organizations. They also do work in their community.

What people say about using Dynamic Yield:

Next Steps

Google Optimize is a great tool for starting out in your optimization journey, but when the time comes (or if it’s here already) for alternatives, this is the list to go through.

Take note of the features that matter most to you and are missing from Google Optimize. Shortlist the tools that meet that need and then weigh them against your criteria. I’m willing to bet your next A/B testing tool is on this list. Bookmark it.

Originally published March 10, 2022 - Updated November 11, 2022

Start 15-Day Free Trial With Us.

Quick form submission
Quick submission.
No credit card needed
No credit card needed.
You can always change your preferences later.
Check Icon
You're Almost Done.
Managing Marketing Team
Managing Tech Team
Hypothesizing Experiments
Coding and QA of Experiments
Convert is committed to protecting your privacy.

You’ve Unlocked Your Free Trial.

  • Check your inbox for the password to Convert’s trial account.
  • Log in using the link provided in that email.

This sign up flow is built for maximum security. You’re worth it!

PS: Gifts await you once you join us.