Pirr is an interactive storytelling app for romance readers, fan fiction writers, and aspiring storytellers. It uses AI to adapt each narrative to the reader’s choices, creating a personalized experience in which characters, emotions, and plot developments unfold moment by moment. Pirr’s writers and editors shape its characters, romantic tropes, and story arcs, while the technology responds to users rather than replacing authors.

Users can choose a genre, setting, atmosphere, and theme, add a plot, and customize characters with their preferred names, pronouns, and personalities. Story possibilities include slow-burn romance, second chances, passionate encounters, and relationship drama. Users can also invite another person to co-create a story. Stories are private by default, and users control whether they share them. The app is free to use, with a Premium subscription offering additional features, and is available through mobile app stores; a web version is in beta. An optional NSFW mode for adults aged 18 and over supports mature themes within Pirr’s content guidelines.