SplitCheck uses Bayesian statistics to tell you the probability your variant is winning — from just 20 visitors. Built for SMB marketers who can't wait months for results.
Free plan includes 1 test · 5,000 redirects/mo
How it works
No developer required. No tag manager. No complicated setup.
Enter your two landing page URLs, set your traffic split, and paste a small tracking snippet on your landing page. CTA clicks are tracked automatically — connect GA4 for custom conversion events.
Replace your ad destination URL with your SplitCheck redirect link. All UTM parameters pass through automatically.
SplitCheck's Bayesian engine tells you the probability your variant is winning — updated in real time. Once you're confident enough, declare a winner and send all traffic automatically.
Features
Built specifically for performance marketers running paid and email campaigns.
Choose Standard (30-day cookie), Session (cookie expires on browser close), or Privacy mode (no cookies, no personal data) — designed with GDPR, Quebec Law 25, and PIPEDA in mind.
Two-proportion Z-test with configurable confidence thresholds (90%, 95%, 99%). Know when your result is real, not random.
All UTM parameters from your ads and emails are preserved on redirect. Your GA4 attribution stays clean and accurate.
Redirect logic runs on Cloudflare's global edge network. Sub-millisecond response times mean no quality score impact on your ads.
Connect your Google Analytics 4 property and track any conversion event — purchases, leads, sign ups — directly in your test dashboard.
Send 100% of traffic to your winning variant after a test ends — without ever changing your ad or email URLs.
Visitors are assigned to a variant on first visit and consistently see the same page — no flickering, no mixed signals in your data. Or use Privacy mode for cookieless assignment.
Unbounce, Webflow, WordPress, Squarespace, custom HTML — if it has a URL, you can test it. SplitCheck works at the redirect level, so no changes to your landing pages are needed.
Pricing
Start free. Upgrade when you need more tests or traffic.
Free
$0
forever
Starter
$19
per month
Most popular
Growth
$59
per month
Pro
$149
per month
Your next landing page test is 5 minutes away. Start free — no credit card, no setup call, no nonsense.
Create your first test →