Each customer has an individualized style map, laying out her feelings about peasant blouses, A-line dresses, or pencil skirts.

Like the dating app it was modeled on, the subscription fashion service Stitch Fix’s “Tinder for clothes” game—called Style Shuffle—is incredibly addictive.

Instead of a potential date, the game serves up a clothing item or outfit with the question “Is this your style?” and only two options: thumbs up or thumbs down. Once you make your choice, a new item pops up, ready to be judged. “Keep going,” the app urges after you finish a batch of ratings...

Each customer has an individualized style map, laying out her feelings about peasant blouses, A-line dresses, or pencil skirts.

Like the dating app it was modeled on, the subscription fashion service Stitch Fix’s “Tinder for clothes” game—called Style Shuffle—is incredibly addictive.

Instead of a potential date, the game serves up a clothing item or outfit with the question “Is this your style?” and only two options: thumbs up or thumbs down. Once you make your choice, a new item pops up, ready to be judged. “Keep going,” the app urges after you finish a batch of ratings...