Variations tested. Winners found. Revenue recovered. You set the goal, we handle the rest.
AI generates copy variations, tests them with real traffic, and promotes winners automatically.
payment.failed3 distinct variations generated for every workflow automatically
Finds winners 3x faster than traditional A/B testing
Winners promoted, losers retired - runs forever without you
Legacy tools make you do the work. Fourbyfour does it for you.
Traditional Tools
Manual setup, manual optimization
Fourbyfour
Thompson Sampling optimization
Ready to automate?
Free to start. No credit card required.
Set your goal once. AI handles variations, testing, and optimization forever.
Multiple versions of copy, timing, and channels tested automatically.
Winners promoted, losers retired. No manual A/B test management.
Every variation tracked to conversions and dollars. See what actually works.
Workflows that adapt to the user, the context, and what's worked before.
payment.failedcart.abandonedDeploy any workflow with one API call
await fbf.track("payment.failed", userId);Set your goal. AI creates variations and optimizes forever.