A/B test a paywall
Split visitors between two screens on one placement, read the result and keep the winner.
You need the Indie plan or above, a placement with a published screen, and a second published screen. Your site must report purchases (onPurchase, or reportPurchase()).
Create the challenger. In Screens duplicate or create a screen, change one thing (price layout, headline, plan order), and select Publish.
Make sure your site prices every package ID the challenger uses. Add any new IDs to products.
Open Placements, select Configure on the placement, and open the Experiment tab.
In Test against (B) choose the challenger. Set Visitors who see B (default 50%). Select Start test.
Wait. Open the Results tab. Until each side has 100 visitors it says Too early to call. When it says one side is very likely better (95% or more), you have a result.
On Experiment select End test and choose the winner. Choosing B switches the placement to it for everyone. Choosing A changes nothing. The numbers stay in Results.
Notes: audiences take visitors out of the test, a schedule in force pauses it, and each visitor keeps their side. See Experiment.