Why traditional A/B testing fails
Every test breaks your ads.
Then you wonder why your CPMs spike right after launching a winner.
Split Testing
Test as much as you want. Under one URL. Forever.
Server-side rotation means Facebook, Google, and TikTok never know you are testing. Campaigns keep their learning. Optimization never resets.
New URL = ad review reset
Send traffic to /v2 and Facebook re-learns from zero. 48, 72 hours of optimization lost. CPMs spike 30, 60% while the algorithm relearns your audience.
Tracker conflicts
Client-side redirects break attribution. Cloaked tests trigger policy reviews. Postbacks fire on the wrong URL and your network thinks the conversion is fake.
Sample sizes never converge
Inconsistent traffic splits. No statistical significance. You promote losers because you ran out of patience or budget mid-test.
How it works
Server-side rotation. One URL. Unlimited variants.
EF picks the variant before the page is served. The browser only ever sees one URL.
1
Add variants in the editor
Duplicate any page. Edit headlines, layouts, offers, anything. Tag each variant with a name. Hit ship.
2
EF rotates server-side
Sticky session per visitor. Even traffic split (or weighted). No client-side flicker. No cloaking flags. No URL changes.
3
Promote winners
Significance shown in real-time. One click promotes a winner to 100% of traffic. Losers stay archived for next iteration.
Test anything
Page-level. Component-level. Funnel-level.
Test what actually moves the needle, not just button colors.
Built-in intelligence
Statistical significance. Built in.
No more guessing if your test is "done." EF tells you when a winner is statistically significant, and which metric won.
Confidence intervals for CR, CTR, AOV, EPC
Sample-size calculator before you launch
Sequential testing, stop early when winners are clear
Per-source significance (Facebook vs Google vs TikTok)
Export to CSV for deeper analysis
Ready to Test
Stop letting your ads reset every time you test.
Same URL. Unlimited variants. Statistical significance built in. Free to start.
