Roleplay depth, not chatbot small talk
Most AI chat apps produce flat, assistant-flavored replies. Castmates characters are written to do what good roleplay partners do:
- They set the scene. Detective Cross doesn't answer like a help desk — he lights a cigarette and narrates the room. Replies mix dialogue, action, and atmosphere.
- They stay in role. Each of the 32 characters has a distinct voice, a backstory, an opening line, and original portrait art.
- They remember. Past sessions are summarized so characters recall who you are and where the story left off — pick up the thread days later.
- 96 ready-made openings. Every character ships with three scenarios, so you can drop straight into a scene instead of staring at a blank chat box.
A cast of 32 across 8 genres
Trade barbs with a noir detective, range the wilds with a ranger, match wits with a sardonic ship AI, sail with a pirate captain, or accept a vampire countess's invitation into the dark. Onboarding tunes the lineup to the genres and tone you like — and when the cast isn't enough, build your own character end to end: persona, greeting, appearance, interaction style (Friendship, Romance, Mentorship, Rivalry, Adventure), tags, avatar, and a custom opening scenario.
Why on-device matters for roleplay
Roleplay is personal. You improvise, you experiment, you write things meant for an audience of one. With cloud apps, that audience includes a server. Castmates generates every reply locally on your iPhone, which means:
- Private by architecture — conversations never leave your device.
- No account — nothing ties your stories to an identity.
- Fully offline — flights, subways, and dead zones don't end the scene.
Free to start
The free plan includes 10 messages a day, the full SFW cast, and one custom character — no sign-up. Pro unlocks unlimited messages and unlimited custom characters, from $9.99/month, $39.99/year, or $59.99 once for lifetime access.