Cozy answers questions about years of your Apple Messages — on your Mac, where the messages already live. Your message database stays local. Every AI model uses zero data retention.
Open cozybot.ai on your Mac to download.
Ask what Sarah said about the lake house, when Dad's flight leaves, what the landlord promised, who needs a reply, or what the group chat decided while you were offline.
Plugins from OpenAI and Anthropic send retrieved texts to their cloud AI. Retention depends on your plan and settings.
Your database stays on your Mac. Questions and relevant excerpts go to zero data retention models. Providers don't keep them or train on them.
Zero data retention on every plan. Privacy details and optional sharing →
Cozy finds conversations waiting on you and drafts a response that sounds like you. You review it in Messages and decide whether to send it.
Find what's waiting
Awaiting Reply surfaces incoming messages that still need your attention.
Match your voice
When you ask for a draft, Cozy writes it in your voice for that person.
Review and send
Review the draft in Messages.
$1.00 of questions
$9.99 / month
Upgrade in the app when the free $1.00 runs out.
10× Pro allowance
Upgrade in the app.
Your message database stays on your Mac. Questions and relevant excerpts are sent over encrypted connections for AI processing. Awaiting Reply and reply drafts also send limited context, as described on the privacy page. Cozy and ModelRelay do not store ordinary AI request content. Optional trajectory sharing is off by default.
No. Cozy uses only zero data retention (ZDR) models for every AI feature, on every plan. Model providers do not retain your prompts or responses or use them to train their models. Optional trajectory sharing with Cozy is a separate choice, off by default.
Yes. Cozy reads your local Apple Messages history — including SMS and group chats — and resolves names from Contacts, so you can ask "what did Sarah say?" instead of searching a phone number.
Cozy can draft a reply in your voice and open it in Messages, but it never sends anything. You review the draft and press Send.
Cozy requires macOS 26 (Tahoe) or later, on both Apple Silicon and Intel Macs.