Methodology
How this index is made
The reader we rank for is an online business, a merchant or the agency working for them, asking one question: which A/B testing tool will deliver measurable revenue impact at a defensible cost? We do not rank for feature-count, funding news or brand size.
Evidence rules
- Every factual claim links to a source we actually loaded, with an access date. No search-snippet facts.
- Where a vendor’s own pages contradict each other (it happens more than you would think), we say so instead of picking a side.
- What we could not verify is labeled unverified, and never rated as if it existed.
- Review-platform scores are only cited where we could load the page ourselves; several platforms block automated access, and we do not launder snippets into facts.
Ranking weights
| 30% | Measurable revenue impact Does the tool make a testing program win more, faster? Prediction, statistics validity, revenue-aware reporting. |
| 20% | Statistical rigor Sequential/always-valid methods, corrections for peeking and multiple comparisons, SRM detection. |
| 20% | Ecommerce & Shopify fit Install path, revenue tracking, checkout limits, app-store track record. |
| 15% | Privacy & compliance Hosting location, consent handling, certifications, DPA availability. |
| 15% | Cost transparency & operations Published pricing, trial availability, how fast a team can launch without developers. |
Updates
Facts are re-checked monthly; the full ranking is re-evaluated quarterly. Each page carries its last-reviewed date. Current edition: 2026-09-01.
Independence & disclosure
This site is operated by the company named in the imprint. We link to vendors directly and use no affiliate links. If a ranked vendor relationship exists, the imprint is the authoritative disclosure.