Run Experiments
You Can Trust

Bell’s experts help fast-moving teams ship better experiments, faster - by building deep expertise, advanced A/B testing capabilities, and actionable statistical knowledge.

Talk to an Expert
70%
Shorter running time
3X
Faster test velocity
90%
Less interpretation errors
Chosen by Market Leaders

Our A/B Testing Services

Whether you need a testing overhaul,
or specialized expertise, we've got you covered

Outsourced A/B Testing Specialist

Get expert guidance on your specific challenges to ensure your team can launch A/B Tests properly and swiftly. We'll make your test planning statistically solid, handle edge cases, and support your analysts from start to finish.

Experimentation Audit

Go from occasional A/B tests to a structured program and avoid costly mistakes and pitfalls. Our experts will review your experimentation setup, practices, culture and analysis, and build you a tailor-made experimentation program.

Custom Training & Workshops

Build deep experimentation expertise to  make reliable decisions. We offer advanced A/B Testing workshops and training, customized to your business context and needs, on topics like Parallel Testing, CUPED, Sequential Testing, SRM and more.

Take Their Word For It

(aka Our Success Stories)

Reduced test duration by 65%

“Bell’s team helped us to find issues with our AB Tests flow, resolve them and ultimately gain much more out of our testing.”

Tali Fulman |  BA Guild Head, Simply

Improved tests reliability by 5X

"Bell transformed our approach to A/B testing. They revamped our testing methodology and ensured it was well-implemented. Their work significantly improved our internal tools and testing accuracy."

Gal Baruch | AI Product Manager, Playtika

Bell's Team

We are a team of experienced (and good-looking) statisticians,
specializing in A/B Testing

Allon Korem

Chief Executive Officer

Expert in advanced A/B Testing methodologies. Worked at Google and Wix.com.

Amit Sasson

Lead, Causal Analysis

A Causal Inference expert, an experienced statistician and a proud winner of the #2020EpiCookieChallenge.

Oryah Lancry-Dayan

Lead statistician

Expert in research planning, data analysis and statistical methodology.

Mali Tsadok

Senior Statistician

Expert in conducting advanced statistical analyses and A/B testing.

Prof. David Steinberg

Advisor

Expert in the statistical design of experiments. Awarded the George Box Medal in 2013; and the Walter Shewhart Medal in 2017.

Israel Ben Baruch

CRO Expert

Product leader and Google expert who’s driven conversion growth through thousands of experiments and a proven methodology.

FAQs
Everything you ever wanted to know, we've got you covered