Launching today

Castmates: Offline AI Roleplay

Launching today

Private AI roleplay that runs fully on your iPhone

11 followers

Private AI roleplay that runs fully on your iPhone

11 followers

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Chat and roleplay with a cast of 32 hand-crafted AI characters — running entirely on your iPhone. No accounts, on-device, works offline. Your conversations never leave your phone.

Castmates: Offline AI Roleplay gallery image

Free Options

Launch tags:iOS•Artificial Intelligence•Entertainment

Launch Team

Wispr Flow: Dictation That Works EverywhereStop typing. Start speaking. 4x faster.

Promoted

Maker

📌

Hey Product Hunt 👋 I'm the maker of Castmates. It's an AI roleplay app where the entire model runs on your iPhone instead of in the cloud. I built it because every AI companion app I tried wanted an account, sent everything I typed to a server, and stopped working the moment I lost signal. That felt backwards for something as personal as roleplay. So Castmates flips it. The AI generates and stores everything on your device. No account, no login, no data leaving your phone, and it keeps working in airplane mode. What you get: 32 hand crafted characters across 8 genres, from fantasy and sci-fi to romance, mystery and anime 96 ready made scenarios to jump straight into a story A creator to build your own characters with custom persona, voice, appearance and opening scene Persistent memory, so characters remember who you are and pick the thread back up days later Fully offline and private by design The hardest part was getting genuinely good roleplay out of a model small enough to live on a phone. Characters that stay in role, narrate scenes, and don't forget who you are halfway through. That took a lot of evaluation work and it's the part I'm most proud of. It's free to start with the full cast. There's a Pro plan for unlimited messages and custom characters. This is a v1 and I'm here all day. I'd love to hear what you think, especially who you want to roleplay with next. Ask me anything about the on-device model, the memory system, or the privacy design. Link: https://get-castmates.com

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20h ago

Love that everything runs locally and the chats never leave the phone, feels like the right call for something this personal. 32 hand-crafted characters is a lot of care poured in.

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6h ago

Maker

@gizemezmj Thank you, I did want to give a lot of care to characters to make it as immersive as possible given the use of small local model.

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3h ago

Wispr Flow: Dictation That Works EverywhereStop typing. Start speaking. 4x faster.

Promoted

Maker

📌

Report

20h ago

Love that everything runs locally and the chats never leave the phone, feels like the right call for something this personal. 32 hand-crafted characters is a lot of care poured in.

Report

6h ago

Maker

@gizemezmj Thank you, I did want to give a lot of care to characters to make it as immersive as possible given the use of small local model.

Report

3h ago