Convert Experiences vs VWO

Convert Experiences

The plan pages list multivariate, multi-page, full-stack and feature-flag testing plus behavioural targeting, which is real breadth beyond URL splits. We found no public information on the SDKs behind the full-stack claim, on a visual editor my marketers could use without a developer, or on personalisation — two things my team would need on day one.

VWO

The pricing page shows a visual editor with WYSIWYG and code editing, A/B/n, split and multivariate tests, advanced targeting and triggers beyond plain URLs, and single-page-application support, with mutually exclusive groups at the enterprise tier — most of what my team needs day to day. However, I found no public information on documented SDKs for server-side delivery, holdouts or edge delivery, so the server-side half rests on a module name rather than documentation.

Convert Experiences

A sample ratio mismatch check ships on the Growth plan and sequential testing with a multi-arm bandit arrive on Pro, so the guardrail vocabulary exists. We found no public information naming the statistical method, offering a sample-size or duration calculator, or stating when a result may be read — exactly what I need before defending uplift to finance.

VWO

Guardrail metrics, sample ratio mismatch detection and multi-arm bandit campaigns are listed, which is more rigour tooling than most feature grids show. But I found no public information naming the statistical method, showing confidence or credible intervals, or offering a sample-size or duration calculator — exactly what finance will ask me to produce when the uplift is challenged.

Convert Experiences

They publish first-party-only cookies with a six-month non-PII lifetime, that IP addresses are not stored to identify anyone, and an opt-out link customers can place. We found no public information on what the script does before consent, on consent management platform integration, or on the legal basis for testing under German consent rules.

VWO

The privacy policy states outright that it applies only to Wingify's customers and not to the visitors of my website, and an opt-out for end users plus an available data processing addendum are mentioned. Beyond that I found no public information on what the test script stores on a device, on its behaviour before consent is given, or on a cookieless mode — a real problem for a German team under TDDDG.

Convert Experiences

The only performance evidence on the captured pages is the claim that the Akamai CDN will deliver your content fast. We found no public information on script size, loading behaviour, flicker handling, or any measured effect on Core Web Vitals.

VWO

Self-hosting appears on the enterprise tier and the privacy policy describes CDN delivery from ten locations on named infrastructure. But I found no published figures for script size, asynchronous loading or flicker handling, and no public information on the effect on Core Web Vitals.

Convert Experiences

API access and an MCP server are on all plans alongside 90+ integrations, and raw data export to CSV is published. We found no public information on warehouse streaming or warehouse-native analysis, or on stated API limits, so my cross-check against our own data would end at a CSV.

VWO

An integrations section exists, pull-based integrations ship at the Pro tier, API access is gated to Enterprise, and Data Studio is a paid add-on. I found no public information on API documentation, export of visitor-level results or warehouse-native analysis, so a result could not be re-checked in my own data as far as these pages show.

Convert Experiences

Visitor data from customer sites is stated to stay on German servers in Frankfurt on every plan, which is what matters most for our visitors. The contracting entity is Convert Insights, Inc. of Delaware, customer account data is stored in the US under the Data Privacy Framework, and snippet delivery runs on Akamai; we found no public information confirming a published subprocessor list.

VWO

The contracting entity is Wingify Software Pvt. Ltd. of Delhi, and the privacy policy states all customer data is centrally stored in Washington DC and Dallas, with standard contractual clauses and an Article 27 representative in Vienna as safeguards. I found no public information on an EU residency option or a published subprocessor list, and the visitor data the script records flows to US-hosted infrastructure.

Convert Experiences

The traffic metric, tier limits, exact overuse rates ($399 per 100K on Growth, $699 per 250K on Pro, switchable off), VAT by billing location and the $1000/year per custom domain add-on are all public. The Enterprise tier is price on request and the terms allow unspecified additional fees, so I could compute our annual invoice only up to the Pro tier.

VWO

The pricing page names Growth, Pro and Enterprise tiers plus add-ons and even a shared-MTU-quota question, but states "No fixed plans. Just a custom proposal built around your goals and scope", and no price figure appears anywhere. A free trial exists, but the invoice is a sales conversation, and I cannot defend a budget line I cannot compute.