You see the same screen from two different designs. The skill behind each is hidden. Pick the one you prefer, or say you can't separate them. Pairs are chosen so that close contenders meet more often, and each round uses a different screen: lists, forms, modals, settings, phone layouts.
Your votes are saved to your account as you go. In Results you can look at your own ranking, everyone's combined ranking, or any one person (other people appear without names unless you are an admin). Rankings use a Bradley-Terry model, the same kind of rating that sits under Elo, with resampling to show how sure each rank is. About 100 votes each gives a rough order, 250 or more a steady one.
Keys: ← prefer A, → prefer B, ↓ can't separate, S skip, Z undo, F zoom, R results.
Enter your work email. We'll send a 6-digit code. Your votes are stored under it so you get your own ranking as well as the group's.
This permanently removes all of your votes from your account. Other people's votes are not affected. Download them first if you want to keep a copy.