
A/B Experiment Implementation
A/B test execution and UI/UX changes based on prioritized hypotheses. Covers test design, statistical setup, implementation in your testing tool, and analysis with documented winners and learnings.
What's included
- Hypothesis prioritization based on impact, confidence, and effort
- Test design with primary metric, guardrails, and sample size
- UI/UX changes built and QA'd across devices
- Implementation in your testing tool (PostHog, VWO, Optimizely, GA4 experiments)
- Statistical setup with proper traffic allocation and runtime
- Monitoring for sample ratio mismatch and data quality issues
- Results analysis with documented winners, losers, and learnings
- Shipping recommendations and follow-up test ideas
Why it matters
Most CRO programs stall because tests are poorly scoped, underpowered, or never properly analyzed. You get a steady pipeline of decision-grade experiments with a documented record of what works, what doesn't, and what to try next.
What clients say
“Tomas at SmartMetrics has been fantastic to work with. He consistently delivers high-quality work quickly, communicates clearly and proactively, and makes even complex implementations feel straightforward. We’ve partnered with him multiple times now and the experience has been excellent every time.”
Jim Aderhold
Gray Digital Group
“Thomas has been very good to work with. Thank you, Thomas!”
Social Jobs
“Thomas and the team at SmartMetrics did a fantastic job for us. We needed a complex cross-domain and cross-platform analytics and e-commerce tracking implementation, and they delivered on time and on budget. Great communication, too!”
Adam Sieminski
Custom Project
Need a custom project?
Let's talk.
Not every project fits a fixed price. Tell us what you need — we'll scope it out and get back to you within 24 hours with a clear proposal.
- Free scoping call — no commitment
- Fixed-price or retainer options available
- Transparent deliverables & timeline

Work with Tomas
Lead Generation Expert