whats-best.ai

Conversion Optimization

trbo

EU-Made Report an error

Panel rating · 6 judges · How to read the stars

Category median

Sovereignty: 2 of 4 dimensions proven

0–5 in half steps. 5 means the rubric's top anchor is met on the evidence.

by trbo GmbH · www.trbo.com

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Read this page as one judge. Each weighs the same scores by what they care about.

The CRO Consultant

Weighted verdict

Sets up testing programmes for several clients and has to recommend a platform each can afford and defend. Reads for multi-project management, clean analytics integration, a consent setup a client's DPO will sign off, and a traffic metric she can estimate before the contract.

Same scores as the panel view — this lens weights them the way this judge cares.

Scored by The CRO Consultant

Experiment types & delivery

How this is scored

What can be tested and where: client-side changes through an editor, server-side and feature experiments through SDKs, multivariate and multi-page tests, and personalisation — judged on what the documentation shows rather than on the feature grid.

0 — Simple A/B split of one page element through a visual editor; no server-side option, no targeting beyond URL.

3 — Client-side A/B and split-URL tests with basic audience targeting, and no SDK or server-side delivery.

5 — Client-side and server-side experiments through documented SDKs for common languages, multivariate and multi-page tests, audience targeting on behaviour and attributes, and rule-based personalisation.

8 — Feature-flag-based experiments sharing one audience and metric model with web tests, mutually exclusive experiment groups, holdouts, edge or CDN delivery, and personalisation that can itself be tested against a control.

10 — One experimentation programme across every surface: web, app, server and edge from the same platform, experiment interactions managed, a documented experiment lifecycle from hypothesis to archived result, and a library of past results a team can search.

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The CRO Consultant

The homepage names A/B and multivariate testing, dynamic segmentation and content personalisation run from a dashboard with "virtually no coding needed", which reads as solid client-side scope, but I found no public documentation of SDKs, server-side delivery, feature flags or holdouts. Good enough for template tests on a web shop; nothing here lets me promise a client anything beyond the browser. 1

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Statistical method & guardrails

How this is scored

Which statistics decide the winner and what protects the customer from misreading them. Scored on what the vendor documents: the method by name, how peeking and multiple comparisons are handled, and whether sample ratio mismatch is detected.

0 — A "winner" or "probability to beat" figure with no documented method, no stated sample-size guidance and no warning against stopping early.

3 — The method is named (frequentist or Bayesian) but its assumptions are not documented, and nothing prevents a test from being called while it is still underpowered.

5 — Documented method with confidence or credible intervals, a sample-size or test-duration calculator, and stated guidance on when a result may be read.

8 — Sequential testing or an equivalent documented protection against peeking, correction for multiple metrics or variants, sample ratio mismatch detection, variance reduction such as CUPED, and guardrail metrics that can stop a harmful test.

10 — The statistics are auditable: methodology published in enough detail to reproduce a result, the choice of method explained per use case, raw per-visitor data available for independent re-analysis, and the interface refuses to present an underpowered result as a conclusion.

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The CRO Consultant

I found no public information naming a statistical method, a sample-size or duration calculator, or any handling of peeking and multiple variants. For my clients that means a winner I cannot defend to their stakeholders. 1 2

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Snippet performance & flicker

How this is scored

The cost the client-side snippet imposes on the page it tests: blocking load, flicker of original content, script weight and the effect on Core Web Vitals — scored on what the vendor measures and publishes, not on "lightning fast".

0 — A synchronous snippet with no stated size, no flicker handling and no mention of performance.

3 — An anti-flicker snippet that hides the page until the test loads, with a timeout, and no published figures for script size or load cost.

5 — Script size and loading behaviour documented, asynchronous loading option, flicker handling explained with its trade-off, and CDN delivery of the snippet.

8 — Published performance figures including impact on Core Web Vitals, a self-hosting or first-party-domain option for the script, per-project bundles containing only active experiments, and a server-side or edge alternative for flicker-sensitive tests.

10 — Performance is a stated commitment: measured overhead published and maintained, flicker eliminated by edge or server-side rendering as a documented path, and tooling that shows the customer what their own configuration costs the page.

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The CRO Consultant

I found no public information on snippet size, loading behaviour, anti-flicker handling, self-hosting options or any measured impact on Core Web Vitals. The homepage promises real-time personalisation and a three-day launch, but says nothing about what the page pays for it. 1

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Analytics, data export & integrations

How this is scored

Getting results and raw data out: integration with analytics and tag management, export of visitor-level results, warehouse-native analysis, and an API — because an experiment result that cannot be checked in the customer's own data is a claim, not a finding.

0 — Results visible in the vendor's dashboard only; no export, no analytics integration, no API.

3 — CSV export of aggregated results and one analytics integration, with no visitor-level data and no documented API.

5 — Integrations with common analytics and tag managers, export of results, and a documented API for managing experiments and reading results.

8 — Visitor-level raw data export or streaming to a data warehouse, warehouse-native analysis on the customer's own metrics, CDP integration for audiences, and an API with stated limits.

10 — The platform treats the customer's warehouse as the source of truth: metrics defined once and computed there, full historical experiment data exportable in open formats, and a versioned API a team can build its own programme tooling on.

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The CRO Consultant

Beyond a "Customer Insights" feature name and real-time personalisation claims, I found no public information on analytics integrations, tag manager support, results export, visitor-level data or an API. An experiment result I cannot check in the client's own data is a claim, not a finding. 1

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European sovereignty

How this is scored

Where visitor data is processed and stored and who the contracting entity is. Independently sourced by the sovereignty pipeline; weighted higher here than in categories that hold only the customer's own data, because the script runs on every visitor to the customer's site and their behaviour is what the platform records.

0 — Non-EU vendor and contracting entity, hosting unstated, subprocessors unnamed, and visitor data leaving the EU without a stated safeguard.

3 — EU data residency offered as an option or an enterprise add-on while the contracting entity is non-EU, or the subprocessor list is absent.

5 — EU processing of visitor data as standard and an EU contracting entity, but parts of the chain — CDN, support access, analytics — are non-EU without an explained safeguard.

8 — EU hosting on named infrastructure including the delivery of the snippet, EU contracting entity, subprocessor list published, and a DPA covering the visitor data the script collects.

10 — Sovereign end to end and evidenced: vendor, entity, hosting, snippet delivery and every subprocessor European, certification published, and no visitor data reaching a non-EU party at any point.

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The CRO Consultant

The legal notice gives a German contracting entity — trbo GmbH, Munich, register court München HRB 205778, German VAT ID — and the privacy policy places servers in Germany and Belgium and names subprocessors including US ones (Apollo, Zoom) transferred under Standard Contractual Clauses or the Data Privacy Framework. A US sister entity, TRBO INC. in Miami, also appears, and I found no public information on where the testing product processes visitor data or where the snippet is delivered from, so parts of the chain stay in the dark. 2 3 1

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Pricing transparency not rated — the vendor publishes no price

How this is scored

A category priced by traffic — monthly tracked users, visitors or impressions — where the tier a site lands in depends on numbers the buyer has to estimate. Whether a buyer can compute the real annual cost including traffic limits, overage, server-side or personalisation modules and seats — from public pages alone.

0 — No public prices at all; every tier is a sales conversation.

3 — A starting price or a free tier exists, but the traffic metric, the limits and what happens above them are unstated — the invoice is unknowable.

5 — Tier prices public with the traffic metric and its limits defined, but at least one commonly needed piece (server-side SDKs, personalisation, overage) is unpriced or "contact sales".

8 — Every tier priced publicly with the traffic metric defined, limits, overage rates, module prices, minimum term and VAT treatment stated.

10 — Complete price computability: annual invoice derivable for a given traffic volume, set of modules and team size, with overage and every add-on published.

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The CRO Consultant

No public prices at all: the only cost statement I can find is that a demo is free and without obligation. Without a published traffic metric, tier limits or overage terms I cannot estimate a client's annual invoice before the contract — for me that is disqualifying on affordability grounds. 1 2

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European sovereignty — proven facts

2 of 4 dimensions proven

Built only from facts shown on the vendor's own pages. A dimension we could not prove is left open, not scored as zero.

Ownership Not determined — uncited Report an error
Data residency EU only ⚠ unverified 3/3 pts 2 Report an error
Subprocessors Not determined — uncited Report an error

Where this could be wrong

What we left out

A claim that does not survive our checks costs us the claim, not the page. This is what was taken off this one.

Sources (10)

The pages every claim on this page was read from — each one checked, dated, and kept verifiable.

  1. 1 Vendor homepage www.trbo.com Checked 22 Sep 2026 Details →
  2. 2 Privacy policy www.trbo.com Checked 22 Sep 2026 Details →
  3. 3 Legal notice www.trbo.com Checked 22 Sep 2026 Details →
  4. 4 Experiment types & delivery — found from sitemap www.trbo.com Checked 1 Oct 2026 Details →
  5. 5 Experiment types & delivery — found from sitemap www.trbo.com Checked 1 Oct 2026 Details →
  6. 6 Consent & visitor tracking — found from sitemap www.trbo.com Checked 1 Oct 2026 Details →
  7. 7 Snippet performance & flicker — found from sitemap www.trbo.com Checked 1 Oct 2026 Details →
  8. 8 Snippet performance & flicker — found from sitemap www.trbo.com Checked 1 Oct 2026 Details →
  9. 9 Analytics, data export & integrations — found from sitemap www.trbo.com Checked 1 Oct 2026 Details →
  10. 10 Analytics, data export & integrations — found from sitemap www.trbo.com Checked 1 Oct 2026 Details →