Best McGaw.io AB Testing Tracking Tool Alternatives in 2026

About McGaw.io AB Testing Tracking Tool

Free AB test calculator for marketers who run experiments across every channel. Not just websites. Calculate statistical significance for email AB testing, social media AB testing, Google Ads experiments, Facebook ad tests, landing pages, mobile app tests, PPC campaigns, and ad copy testing. If you can split an audience, this calculator works. **What you get:** • AB testing calculator with statistical significance scoring • Multi-variant testing — compare more than two variations at once • Sample size calculator so you know when to call a test • Save test details with names, notes, and dates • Running test history log — every experiment tracked in one place • Restore past results with a single click • CSV export for reporting and team sharing • Works on any marketing experiment, not just website CRO **Why this exists:** Most AB testing tools are locked inside platforms. VWO and Optimizely only calculate tests run on their own software. Google Ads has a built-in calculator that only works for Google Ads. This is a standalone split test calculator. Run it alongside any tool, any platform, any channel. Your email tool doesn't have a significance calculator? Use this.