Features that help you decide.
We stripped away everything that doesn’t help you pick a winner.
runab is built for speed and clarity.
A/B Testing Only
Exactly two variants. A 50/50 traffic split. No multivariate complexity. No weighting. Just A vs B.
One Conversion Per Test
Focus on a single metric. Track a page view, a button click, or a custom event. Decide based on what matters.
Decisive Results
Clear conversion rates and a winner badge. No charts to interpret. No timelines to watch. Just the answer.
Zero Flicker
Edge middleware for Next.js means variant assignment happens before the page loads. No layout shifts.
Developer-First SDK
A 1.2kb gzipped SDK with zero dependencies. Simple hooks, simple API. Works with every framework.
Privacy Focused
Anonymous-first design. No cross-device tracking. No PII collection. We respect your users.
Visual Testing
Define your variants directly in code. Test headlines, buttons, colors, or entire components with ease.
URL Split Testing
Test entirely different pages. Redirect 50% of visitors to a variant URL. Perfect for landing page tests.
No Analytics Bloat
runab is a decision tool, not an analytics suite. No dashboards to learn. No marketing fluff.
Built for “Vibe Coders”
If you're building solo or in a small team, you don't need a PhD in statistics to know if a headline works. You just need to run the test.