Google Optimize was sunset by Google in September 2023. CustomFit.ai is the most popular Google Optimize alternative for D2C brands — with more features, better stats, and no migration headaches. Plus an AI Copilot, optimizer, and bandit engine Google Optimize can’t match.
Comparison reflects public documentation as of November 2024. Spot something out of date? Email us.
Built for ecommerce, not retrofitted from a generic experimentation tool.
Plain-English prompts → live A/B tests in seconds.
Usage-based, no per-seat fees, free trial.
Bottom line:Google Optimize is no longer an option — it was deprecated, so former users need a replacement. If you’re a Shopify or D2C brand that wants experimentation, personalization, and an AI Copilot in one place, CustomFit is the more natural fit.
Optimize was sunset in 2023 — CustomFit is actively built for ecom.
Go beyond basic A/B to 1:1 personalized experiences.
No cap on concurrent tests like Optimize had.
Send exposure & conversions to GA4 so reporting carries over.
We review your live Google Optimize setup and map tests, goals & audiences to CustomFit.
Your team recreates priority experiences in the visual editor — no code, with our help.
Launch with confidence and a dedicated onboarding specialist by your side.
🤝 Replacing Google Optimize is easy — connect GA4 and rebuild your tests with personalization on top.
CustomFit.ai is a natural Google Optimize replacement after its 2023 sunset. Where Optimize offered basic free A/B testing tied to GA, CustomFit adds personalization, feature flags, unlimited concurrent experiments, and an AI Copilot — purpose-built for ecommerce, with GA4 integration so your reporting carries over.
You need a supported successor for ecom.
Personalization and flags beyond basic A/B.
Keep your analysis where your team works.
You can’t invest anything in tooling (note: Optimize no longer exists).
You only ever needed the simplest split test.
A content site with no store.
Choosing between CustomFit.ai and Google Optimize comes down to fit: Google Optimize is a capable experimentation tool, but CustomFit is purpose-built for D2C and Shopify brands — cart- and AOV-aware, no-code for marketers, and bundled with an AI Copilot, personalization, and feature flags in one platform.
Where many Google Optimize deployments need engineering support, custom widgets, or per-seat licensing, CustomFit gives growth teams a visual editor, 100+ ready ecommerce widgets, and usage-based pricing with unlimited users. Migration is guided — your active experiments, goals, and audiences are mapped over during onboarding, so you keep momentum instead of restarting.
Both tools run rigorous A/B and multivariate tests with solid statistics. The difference is everything around the test: CustomFit closes the loop from observation to personalized rollout, ties every experiment to real revenue, and is typically live in days rather than a multi-quarter implementation.
Most D2C teams migrate in days. CustomFit’s team maps your live Google Optimize experiments, goals, and audiences during onboarding so you don’t lose history or restart from scratch.
Usually. CustomFit is usage-based with no per-seat fees, so growing teams don’t pay more just for adding marketers.
CustomFit is a natural successor for ecom: A/B testing, personalization, and feature flags in one tool, with GA4 integration so your reporting carries over.
Yes. Send experiment exposure and conversions to GA4 (and Clarity, Mixpanel, Amplitude) so your analysis lives where your team already works.
Yes — a 14-day full-feature trial and a usage-based entry plan let you replace Optimize without an enterprise contract.
No. Marketers build experiments and personalized experiences in a no-code visual editor; developers can use the API and SDKs when they want deeper control.
Most teams install in minutes via a single script tag or the Shopify app and ship their first experiment the same week.
Join 2,400+ D2C brands shipping smarter experiments on CustomFit.ai.