Pick a tag
Enter an e621 search. The app fetches the first 40 image posts it can find, then runs a knockout tournament.
Tip: on iPhone, Safari is the intended way to run this. If the HTML opens in a file preview instead of Safari, the buttons/API may not work. ⚠️ e621 can contain adult material. This app does not alter e621's ratings; use it only if you are permitted to view the source site.