Our 10 best A/B tests,
backed by 4.3 million tests.
Ten tests shops kept more often than the average test. More revenue from the traffic you already pay for.

What you get
- The 10 test concepts: Eight with their kept index against the average test on the same testing tool, two worth running from the Black Friday data, and where each is tested most by industry.
- Three shops per test: Three online shops observed running each concept, in phone renders, with the record behind every example.
- How to run each test in Apex: Every concept as a ready test idea: its Likelihood to Win for your shop, built from the chat, watched by Guardian.
The ten tests
- Discount unlocked with a code instead of applied automatically: kept 1.82 times as often as the average test.
- Early access for subscribers instead of an open sale: kept 1.58 times as often as the average test.
- Newsletter-gated offer instead of an open offer: kept 1.41 times as often as the average test.
- Amount off instead of percent off: kept 1.59 times as often as the average test (small sample).
- Free gift above a basket value instead of free shipping: kept 1.47 times as often as the average test (small sample).
- Low stock or urgency cue on the product page: kept 1.36 times as often as the average test.
- Size and fit help on the product page: kept 1.26 times as often as the average test.
- Price in the offer wording instead of “free”: kept 1.28 times as often as the average test.
- Test a smaller discount (20 against 30 percent): Discount size showed no clear pattern in what shops kept.
- Start in October, not four days before Black Friday: The typical Black Friday test is first observed four days before Black Friday.
Index: how often shops kept the new version, against the average test on the same testing tool (1.0). Rows 9 and 10 are tests worth running from the Black Friday data, without an index.
Good to know
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