Teasa is a free AI character chat and interactive roleplay app where users can explore creator-written stories and build ongoing connections with AI characters. Available on the web and Android, the platform offers two ways to interact: step into a story with a setting, cast, quests and a role to play, or message a character one-on-one about their fictional world or everyday life. Users shape story events through their own dialogue and actions, while relationship milestones track how connections develop. Characters from stories can also be contacted through direct messages.

Visitors can begin a story without signing up; a free account lets them continue beyond guest turns and use unlimited character DMs. Teasa’s catalogue includes stories across themes such as romance, fantasy and suspense, alongside a selection of popular characters. The service is available in English, Japanese, Korean, Simplified Chinese, Spanish and Brazilian Portuguese, and is intended for users aged 13 and up.