Probant vs. Omniconvert
Both tools compared point by point, based on Omniconvert’s public documentation, accessed November 11, 2026. Every statement about Omniconvert links to its source.
What Omniconvert offers.
Omniconvert, founded in 2013 and based in Bucharest, publishes three products: Commander, Explore, and Pulse.123 Explore is its A/B testing and CRO platform for ecommerce; Commander, its AI growth engine for Shopify, is in beta.45 The engine is Bayesian by default, with frequentist as an option.67
Probant is for sites that want A/B test verdicts that hold up, with a plan set before launch and guardrails monitored through rollout. It measures what each conversion is worth: the margin on an order, a qualified or signed lead, a paid subscription.
The differences, point by point.
On the left, what Omniconvert’s public documentation says, each sentence with its source. On the right, what Probant does. “Not mentioned” means nothing was found in that documentation, which does not prove a feature is missing.
| Criterion | Omniconvert | Probant |
|---|---|---|
| Statistical method | “Chance to win” is computed in both frequentist and Bayesian terms; a site setting shows one, the other, or both, with Bayesian as the default. No sequential method is documented.67 | Frequentist, with a sequential plan set before launch: target effect, duration, and checkpoints. The verdict fits in one sentence, with a 95% range. Where to check |
| Peeking | No sequential test is documented. The help center recommends waiting until several conditions are met (2,500 users and 200 conversions per variant, 1.5 purchase cycles, over 95%); the calculator only shows results after 7 days.89 | Decisions are only made at planned checkpoints, with O’Brien-Fleming boundaries: very strict at first, close to the usual threshold at the end. During a rollout, ranges are always valid (mSPRT), so you can check them at any time. Where to check |
| Traffic split (SRM) | Explore monitors SRM automatically and shows a notification on the experiment; no blocking of the result or specific statistical test is documented.10 | The traffic split is checked with a chi-square test every time the report is read. If the split is off, the test moves to “blocked” status and no winner is declared. Where to check |
| Guardrails | Guardrails that stop a test on their own are not mentioned in their public documentation (as of November 11, 2026). | Guardrail metrics are tracked with their range; a guardrail is only breached if the whole range crosses the limit. A breached guardrail blocks the test’s verdict, stops a running test on its own, and during a rollout moves visitors back to the original automatically. Where to check |
| Gradual rollouts | A stepped rollout with automatic rollback is not mentioned in their public documentation (as of November 11, 2026). | Steps of 25% → 50% → 100% by default, 10% → 25% → 50% → 100% in cautious mode. Automatic rollback when a guardrail is breached; an exposed visitor stays exposed in the following steps. Where to check |
| Multi-armed bandit | Dynamic allocation is not mentioned in their public documentation (as of November 11, 2026). | Optimization test: Thompson sampling, reallocated at most once a day, with a minimum share per variant. It maximizes a conversion rate, or an amount per visitor such as revenue: purchase probability and average order value drawn from their distributions, with values capped at a percentile as in an A/B test. Optionally, shares per device (mobile, tablet, desktop): one draw per device, each with its own learning and floor. A visitor always keeps their variant: a new split only applies to visitors who arrive after it. The screen says so: it maximizes conversions (or the amount per visitor) during the test, without proving that a variant is better. The difference is read period by period (and device by device), with no declared winner; the CSV export gives the same reading. Where to check |
| Revenue and margin per visitor | The report shows total revenue, revenue per user, and AOV; no significance or confidence interval specific to revenue per visitor is documented (“Chance to win” applies to conversions).11 Omniconvert Commander (a separate product, in beta) measures results in “True Profit” (revenue minus cost of goods, shipping, returns, discounts, advertising, and fees); the Shopify price test is presented as measuring the impact on margin, and a margin metric is not described in the Explore report.1213 | Revenue and margin per visitor, each with its range; the gain is stated in euros. Margin is calculated on the server from reconciled orders, the cost of each product (Shopify or CSV), and store fees; no margin verdict below 90% of revenue covered by known costs. Where to check |
| Winner’s curse | A winner’s curse correction is not mentioned in their public documentation (as of November 11, 2026). | The reported gain is corrected for the winner’s curse by Bayesian shrinkage toward the effects of the store’s past tests. Where to check |
| Bayesian mode | Bayesian is the default algorithm and gives a probability of winning; the choice of prior and expected loss are not documented.14 | Optional, off by default: a Bayesian reading next to the verdict, with the probability that the variant does better, the credible interval, and the expected loss of each choice. The prior is centered on zero and as wide as the effects measured by the store’s completed tests; while there are too few of them to estimate it, the Bayesian reading is not shown. The decision always follows the sealed plan; when the two readings disagree, the report explains why. Where to check |
| Multiple comparisons | A multiple comparisons correction is not mentioned in their public documentation (as of November 11, 2026). | Segment comparisons are corrected with the Holm method. With several variants, the error risk is split across comparisons (Bonferroni). Where to check |
| Multivariate testing | Product pages advertise multivariate tests; the help center does not describe a factorial design or interaction analysis.15 | Full factorial design generated by Probant: two to four sections, each with two to four levels, up to sixteen combinations, each served as a variant. Main effects of each section across all traffic and interactions between two sections, corrected with the Holm method on the comparisons stated in the plan. Based on the workspace’s measured traffic, the plan says whether the test can reach a conclusion and suggests removing a level or a section; no best combination is declared without a check. Where to check |
| Variance reduction (CUPED) | Variance reduction (CUPED) is not mentioned in their public documentation (as of November 11, 2026). | CUPED applied to live test reports, using each visitor’s history before their first exposure; without history, the difference stays unadjusted and the report says so. Where to check |
| Visual editor | The visual editor opens on the site through the Omniconvert Explore browser extension (required); a Code tab shows the code of the changes and lets you write it.1617 | Two ways to edit, producing the same changes: a page preview loaded by Probant, without its scripts, or the live page on the site, scripts included. On the site, the editor is loaded by the script already installed, through a short-lived signed link for one draft and one variant, with no browser extension. It only sends the chosen changes to Probant. Where to check |
| Widgets | Overlays (pop-ups, banners, interstitials triggered on exit, scroll, etc.), ready-made overlays and templates, and on-site surveys including NPS.181920 | Banner, countdown, pop-up, badge, reassurance, action bar, delivery date, social proof, promo code, free shipping, and survey, set up without code in the editor and saved in the workspace library for other tests. A widget is just a set of ordinary changes: escaped text, links over https or to the site, and styles applied without a style attribute, so a strict CSP does not need loosening. The countdown follows the site’s time zone and disappears at the deadline; the pop-in opens on arrival, on exit intent, or after scrolling, closes with the keyboard, and does not reappear during the visit if consent allows. Their small modules only load for visitors in the variant. The delivery date is calculated in the visitor’s browser (cutoff time, business days, public holidays); social proof shows the exact number of purchases received over a rolling week, and only above a threshold. The survey asks up to 8 questions (closed answers, recommendation scale, open question) with conditional logic, on the page or through a link outside the site (email, QR code), based on 70 templates (recommendation, satisfaction, effort, checkout blockers, cancellation, concept test, multi-question surveys…); open answers are redacted before sending (email addresses, phone numbers, cards, IBANs), kept for 180 days, and grouped by theme; each question is read by variant, with its range and response rate, and comparisons across all questions are corrected together; a response through a link is attached to the variant the visitor saw, recalculated by Probant, or stays outside the test. Where to check |
| Script and flicker | Synchronous script by default and recommended (perceived delay of about 60 to 300 ms), asynchronous possible (and required through GTM or the Shopify app); the script gives up if loading takes more than 1 second. The script size is not published.212223 | Script under 7 KB compressed, loaded asynchronously, that does not hide the page while it loads. Server-side assignment available, for a display with no flicker at all. Where to check |
| Granular permissions | Sub-accounts with fixed access levels that can be combined per site (read only, full access, Creator, Activator, billing); custom roles beyond these combinations are not mentioned.2425 | Four fixed roles, plus custom roles the owner builds from a catalog of named permissions: prepare, launch and stop, roll out, approve a launch, write variant JavaScript, manage flags, metrics, margin, members, and keys. No privilege escalation: billing, roles, transfer, and deletion of the workspace stay with the owner; no one can grant more than their own permissions, and an API key cannot exceed its author’s. Where to check |
| Data hosting | The pricing page states that an EU data center is available; the data processing addendum lists DigitalOcean (a US company, standard contractual clauses) on servers in the Netherlands. The default location is not specified.2627 | Database and compute in Amsterdam, with Scaleway, in the European Union. Scaleway, which hosts the database and compute, is a French company. Published subprocessor list: Scaleway (Amsterdam, Netherlands (nl-ams region), in the European Union), Brevo (European Union: servers in France and Germany, encrypted backups in Belgium (Google Cloud), according to Brevo), Mistral AI (European Union by default (European API endpoint), according to Mistral), ClickHouse (option not used), Stripe (Contract with Stripe Payments Europe, Ltd. (Ireland); data transferred to Stripe, LLC (United States), according to Stripe), Sentry (European Union: Frankfurt (Germany), including backups, according to Sentry). Depending on the feature used, Mistral may temporarily transfer data outside the European Union to the subprocessors it publishes; its data processing agreement limits these transfers to countries the EU recognizes as adequate, or covers them with standard contractual clauses. Stripe transfers payment data to Stripe, LLC, in the United States, under the Data Privacy Framework and, failing that, standard contractual clauses. Whatever region is chosen, Sentry may keep the data of Probant’s Sentry account (members, settings, audit log, project descriptions) in the United States; reported errors stay in Frankfurt. Where to check |
| Consent by default | The built-in GDPR setting (presented as optional) prevents any cookie for EU visitors without consent; without it, the script can load without waiting for consent. Assignment cookies last one year.28293031 | Consent required by default: no cookie, no assignment, and nothing sent before the visitor agrees. Consent given mid-page: the page does not change in front of the visitor; their variant starts on the next page. First-party cookie, lasting 390 days at most, never extended. Where to check |
| Pricing model | Priced by monthly tested visitors (slider from 50k to over 2M); the slider data shows $350/month billed monthly or $2,940/year for 100k. Above the quota, experiments pause until the next cycle or an upgrade (no overage billed); no-commitment contracts.32333435 | Creating a Probant workspace is free; paid plans cost €590 to €1,990 per month depending on the number of tested visitors (2 months free with annual billing), with no overage charges. Agency plan: 1,000,000 tested visitors per month, shared across client workspaces, from 3 workspaces, for €1,490 per month or €14,900 per year. Where to check |
What Omniconvert also does.
Probant shares these points with Omniconvert.
A visual editor
The visual editor opens on the site through the Omniconvert Explore browser extension (required); a Code tab shows the code of the changes and lets you write it.1617
EU hosting
The pricing page states that an EU data center is available; the data processing addendum lists DigitalOcean (a US company, standard contractual clauses) on servers in the Netherlands. The default location is not specified.2627
A Bayesian reading
Bayesian is the default algorithm and gives a probability of winning; the choice of prior and expected loss are not documented.14
When to choose Omniconvert over Probant.
Based on Omniconvert’s public documentation.
You want to start for free
Instead of a time-limited trial, Explore offers 50,000 free tested visitors with all features, no credit card required; the pricing page also shows a “FREE” tier at 50k users per month.3637
You sell on BigCommerce or VTEX
Shopify app (theme app block, custom pixel for sales, required for price tests; not compatible with multiple currencies); documented integrations for BigCommerce, Drupal/Joomla/PrestaShop, and WordPress; VTEX listed on the pricing page.3839
You want on-site NPS surveys
Overlays (pop-ups, banners, interstitials triggered on exit, scroll, etc.), ready-made overlays and templates, and on-site surveys including NPS.181920
What sets Probant apart.
These points are not in Omniconvert’s public documentation, accessed November 11, 2026. A missing mention does not prove a feature is missing; if these points matter to you, ask Omniconvert.
Margin per visitor
Probant measures revenue and margin per visitor, each with its range.
OmniconvertOmniconvert Commander (a separate product, in beta) measures results in “True Profit” (revenue minus cost of goods, shipping, returns, discounts, advertising, and fees); the Shopify price test is presented as measuring the impact on margin, and a margin metric is not described in the Explore report.1213 Margin per visitor in test reports is not mentioned there (as of November 11, 2026).
Learn moreWinner’s curse correction
The reported gain is corrected by Bayesian shrinkage toward the effects of the store’s past tests.
OmniconvertA winner’s curse correction is not mentioned in their public documentation (as of November 11, 2026).
Learn moreSRM that blocks the verdict
A traffic split imbalance moves the test to “blocked” status, and no winner is declared.
OmniconvertExplore monitors SRM automatically and shows a notification on the experiment; no blocking of the result or specific statistical test is documented.10 Automatic blocking of the test is not mentioned there (as of November 11, 2026).
Consent required by default
No cookie, no assignment, and nothing sent before the visitor agrees.
OmniconvertThe built-in GDPR setting (presented as optional) prevents any cookie for EU visitors without consent; without it, the script can load without waiting for consent. Assignment cookies last one year.28293031 Consent required by default is not mentioned there (as of November 11, 2026).
Frequently asked questions.
How much does Omniconvert cost?
Priced by monthly tested visitors (slider from 50k to over 2M); the slider data shows $350/month billed monthly or $2,940/year for 100k. Above the quota, experiments pause until the next cycle or an upgrade (no overage billed); no-commitment contracts.32333435 Creating a Probant workspace is free; paid plans cost €590 to €1,990 per month depending on the number of tested visitors (2 months free with annual billing), with no overage charges.
Where does Omniconvert host data?
The pricing page states that an EU data center is available; the data processing addendum lists DigitalOcean (a US company, standard contractual clauses) on servers in the Netherlands. The default location is not specified.2627 Probant hosts its database and application in Amsterdam, with Scaleway.
Does Omniconvert measure margin?
Omniconvert Commander (a separate product, in beta) measures results in “True Profit” (revenue minus cost of goods, shipping, returns, discounts, advertising, and fees); the Shopify price test is presented as measuring the impact on margin, and a margin metric is not described in the Explore report.1213 Probant measures revenue and margin per visitor, each with its range, from orders and the cost of each product.
Can you look at Omniconvert results while a test is running?
No sequential test is documented. The help center recommends waiting until several conditions are met (2,500 users and 200 conversions per variant, 1.5 purchase cycles, over 95%); the calculator only shows results after 7 days.89 Probant sets its checkpoints before launch (O’Brien-Fleming) and uses always-valid ranges during rollouts.
Sources.
Official pages from Omniconvert, accessed November 11, 2026. Quotes are reproduced in their original language.
- Source 2: www.omniconvert.com
Omniconvert, an ecommerce growth software company founded in 2013, makes three products: Omniconvert Commander, Omniconvert Explore and Omniconvert Pulse.
- Source 3: www.omniconvert.com/about
The company rebranded from its original name, Marketizator, to Omniconvert.
- Source 4: www.omniconvert.com/explore
Omniconvert Explore is the A/B testing and CRO platform for eCommerce brands. Run A/B, multivariate and server-side tests, personalization and on-site surveys on product pages, cart and checkout, and measure every result in revenue per visitor.
- Source 6: help.omniconvert.com/kba/how-to-read-statistics-in-omniconvert-2
Chance to win results are calculated using both Frequentist and Bayesian methods.
- Source 7: help.omniconvert.com/kba/sample-size-calculator
It follows your website's Statistical relevance algorithm setting (Bayesian by default): Bayesian or Frequentist uses that result, and Both uses the Frequentist one.
- Source 8: help.omniconvert.com/kba/understanding-sample-ratio-mismatch-srm-in-omniconvert-explore
We recommend letting an experiment run until all of these conditions are met at the same time:
- Source 9: help.omniconvert.com/kba/sample-size-calculator
It has been running for at least 7 days. Results are not displayed before then, even if the sample size is already reached.
- Source 10: help.omniconvert.com/kba/understanding-sample-ratio-mismatch-srm-in-omniconvert-explore
Explore automatically monitors for SRM and displays a notification directly on the experiment if a mismatch is detected.
- Source 11: help.omniconvert.com/kba/how-to-read-statistics-in-omniconvert-2
Revenue/user - total revenue ÷ number of users.
- Source 12: www.omniconvert.com/commander
True Profit is revenue minus cost of goods, shipping, returns, discounts, ad spend and platform fees.
- Source 13: help.omniconvert.com/kba/shopify-price-testing
Price Testing is a form of A/B testing where different segments of your audience see different prices for the same product, letting you measure the impact of pricing on conversion rate, revenue, and profit margin.
- Source 14: help.omniconvert.com/kba/understanding-sample-ratio-mismatch-srm-in-omniconvert-explore
Chance to Win (Frequentist) and Bayesian probability are the results of two different statistical algorithms.
- Source 16: help.omniconvert.com/kba/visual-editor
You need the Omniconvert Explore browser extension installed to use the Visual Editor.
- Source 17: help.omniconvert.com/kba/visual-editor
Code shows every change you've made translated into code, and lets you write custom code directly instead of using the visual tools.
- Source 18: help.omniconvert.com/kba/what-is-omniconvert-explore
Overlays - pop-ups, banners, or interstitials that appear based on a trigger (time on page, scroll, exit intent, and more).
- Source 19: help.omniconvert.com/kba/what-is-omniconvert-explore
Surveys - collect direct feedback from visitors, from simple pop-up questions to full NPS surveys.
- Source 21: help.omniconvert.com/kba/installing-the-omniconvert-tracking-code-on-your-website
This is the default and the recommended option for most users.
- Source 22: help.omniconvert.com/kba/why-you-should-install-the-code-synchronously
Synchronous - better user experience with no flicker, but perceived loading delay is roughly 60-300ms.
- Source 23: help.omniconvert.com/kba/why-you-should-install-the-code-synchronously
This 1-second threshold is Explore's protocol for emergency situations: the tracking code skips loading and won't apply any changes if load time exceeds 1 second, to prevent any negative influence on your page's load time or user experience.
- Source 24: help.omniconvert.com/kba/how-to-create-subaccounts
Access levels can be combined and set per website - for example, someone could have Full access on one website and Read only on another.
- Source 25: help.omniconvert.com/kba/how-to-create-subaccounts
Creator - can create experiments, but not activate them.
- Source 27: www.omniconvert.com/privacy-security
8.1. Data controller agrees with the usage of the following specific sub-processors by the Data Processors for IT services: Digital Ocean, USA (and has signed adequate Standard Contractual Clauses) on its servers from the Netherlands.
- Source 28: help.omniconvert.com/kba/omniconvert-cookies
GDPR consent not given - if your visitors are in the EU and haven't given GDPR consent, Explore doesn't set any cookies.
- Source 29: help.omniconvert.com/kba/gdpr-user-privacy-settings
Using Explore's built-in GDPR functionality is entirely optional.
- Source 30: help.omniconvert.com/kba/gdpr-user-privacy-settings
The tracking code loads immediately, regardless of consent status.
- Source 31: help.omniconvert.com/kba/omniconvert-cookies
mktz_ab Bucketed in an A/B Experiment Each time 1 year
- Source 32: help.omniconvert.com/kba/what-is-omniconvert-explore
A Tested Visitor is counted once per unique visitor, no matter how many times or how many different experiments they see.
- Source 33: www.omniconvert.com/pricing
{"yearly":2940,"monthly":350,"savingPercentage":30,"savingAmount":1260,"text":"For smaller companies that are starting out","urlKey":"100K"
- Source 34: www.omniconvert.com/pricing
Technically, the system notifies you by email and pauses all running experiments until your next billing cycle starts or until you decide to upgrade your account.
- Source 35: www.omniconvert.com/pricing
Flexible contracts with friendly terms: no binding agreements, hidden clauses written in fine print
- Source 36: www.omniconvert.com/explore
Instead of a limited-time trial, Omniconvert Explore gives you FREE A/B tests for 50,000 website visitors.
- Source 37: www.omniconvert.com/explore
You can create an account, set up your first experiment, and run it on up to 50,000 visitors without entering payment details.
- Source 38: help.omniconvert.com/kba/integrate-with-shopify
Automatically installs the Custom Pixel, which tracks Sale conversions.
- Source 39: help.omniconvert.com/kba/integrate-with-bigcommerce
Integrating Explore with BigCommerce involves two parts: installing the general tracking code, and installing the conversion (Sale goal) tracking code.
Migrate from Omniconvert
Your Omniconvert history can be imported as a generic CSV (visitors and conversions per variant) and is reread by Probant’s engine: every verdict is recalculated from visitors and conversions.
- Open demo, no sign-up
- Free to start, no overage charges
- Database and compute in Amsterdam, with Scaleway