Polish vs Optimizely and VWO
Optimizely and VWO are the established experimentation platforms. Both give a cross-functional team a visual editor to build tests without code, a statistics engine to read them, and the governance a large organization needs. Both sell through a demo, with plans sized for teams. They are excellent tools for running experiments. They don't come up with them.
Built for founders who don't have a CRO team, or the time to be one.
Side by side
Who it's for
One founder, no CRO team. One site on the free plan.
Cross-functional teams: marketers, product managers, engineers. Plans tiered from “small teams getting started” to enterprise.
Pricing
Free until your site has been optimized for 5,000 pageviews, then one flat monthly plan. No card, no call.
By demo. Optimizely publishes no price; VWO lists Growth, Pro and Enterprise tiers, each behind “Schedule a demo”.
Getting started
Paste one line in your <head>. The agent crawls the site, picks the elements and starts writing.
Install the snippet, then build each test in the visual editor: pick the element, write the variant, set the goal, launch.
What gets changed
Words only: headlines, CTAs, copy. Never the layout, images or brand.
Anything you can edit in the visual editor: copy, layout, images, flows. Full control, full responsibility.
Who writes the variants
The agent writes every variant, in the site's language and voice. You steer the tone, approve or pause.
You do, or your copywriter. AI assistance for ideas is arriving, but the hypothesis and the test are yours to set up.
Who decides what's served
The engine favors what performs while every variant stays live, and only calls a winner at 95% confidence with at least 200 views per variant.
The traffic split you configure (A/B, multivariate, or bandit), read by a stats engine. You call the winner and ship it.
Measurement
Its own first-party, cookieless pixel. Independent of your analytics stack.
Their own tracking plus integrations with your analytics and data warehouse.
Your control
A live feed of every decision, in plain words. You can steer the tone, approve a winner or pause anything.
Total. Every test is designed, launched, read and concluded by your team.
When Optimizely and VWO is the better pick
- You have a team whose job is to run experiments, and a backlog of hypotheses to test.
- Your tests change layout, flows or pricing pages, not just the words on them.
- You need enterprise governance: roles, audit, SSO, a data warehouse integration.
- Your traffic is large enough that a dedicated experimentation program pays for itself.
When Polish is the better pick
- Nobody on your side has a week to design, write and launch a test.
- You have a real but modest traffic: the free plan is sized for the first 5,000 pageviews.
- You want the variants written for you, in your voice, and re-written when they lose.
- You want to start today, without a demo.
What this page says about Optimizely and VWO was read on optimizely.com — Web Experimentation and wingify.com — VWO pricing on September 17, 2026. If it has changed, tell us and we'll fix it.
Your website rewrites itself until it converts.
Polish writes new versions of your headlines and CTAs, tests them on your real visitors and keeps the ones that win.
Start free