The only AI assistant that actually knows your life – because nothing else has every face, every message, every meeting, every email, every photo, every place loaded in, all kept on your Mac, all private to you.
Like a Rolodex of your entire life – every person, every conversation, every memory – and an AI that can riffle through it for you instantly.
An AI assistant that has every conversation, every face, every meeting loaded in. Ask it anything about your own life. It answers from what it knows about you specifically, not from the open internet.
“You haven’t spoken to your mum in three weeks.” “You talked over Pierre four times in that meeting.” Relationship intelligence stitched across iMessage, WhatsApp, email, and calendar.
Marvin runs inside the apps you already use – iMessage, WhatsApp, email. No new app to learn. No browser tab to keep open. Ask a question, get an answer, carry on.
Every byte lives on your hardware. No cloud. No telemetry. Pull the ethernet cable and it still works. Nobody else can see a thing – not even us.
Marvin runs entirely on your machine. Ask about your contacts, your schedule, your history. Get answers grounded in your actual life, not the internet. Via iMessage, WhatsApp, or email.
Not just contacts – warmth, reciprocity, conversation history. “You haven’t spoken to your mum in three weeks.” “You talked over Pierre four times in that meeting.” See how your relationships actually evolve over time.
Every meeting, every message, every event – laid out chronologically and searchable. The story of your life, told through your data. Not trapped in silos across ten different apps.
Install it, and it instantly reads your Safari history, iMessage, Notes, Calendar, Photos, and more – directly from your Mac. Then add 20 platforms via GDPR exports. Your entire social graph, connected in minutes.
Safari and Chrome extensions silently feed every page you visit into your knowledge graph. That article about local AI you read last Tuesday? It is cross-referenced with the person who sent it to you, the meeting where you discussed it, and the topic it relates to. Your browsing history stops being a list of URLs and starts being context.
When the chat interface is not enough, there is a browseable surface: auto-generated pages for every person, organisation, and topic your AI has loaded in. Cross-linked, searchable, with summaries you can skim. 21 page types. Over 14,800 pages in the founder’s instance.
Everything you have ever clipped, tagged, and saved – searchable and cross-referenced with your contacts. Notes from Evernote, bookmarks, research – connected to the people and conversations they relate to.
Thousands of conversations scattered across ten apps. WhatsApp groups you stopped reading. Emails you never replied to. Meetings you half-remember. Ostler has all of it loaded in – and an AI that can riffle through it for you instantly.
Ostler runs on your hardware. Your conversations, your contacts, your personal graph – your personal data never leaves your device. We cannot read it, even if we wanted to.
That is not a policy. It is architecture.
Pull the ethernet cable and it still works. Your knowledge graph, your AI assistant, your wiki – all local. Ostler fetches public data from the web (Wikidata, web search) but never sends your personal data anywhere.
$24.99 per month. Unlimited local AI queries. No token limits. No usage caps. No cloud compute bills. Your Mac does the work.
Your personal data is never sent to any server. The AI models run on your machine via Ollama. Zero cloud inference. Zero telemetry. Zero data harvesting.
Your databases are encrypted with your passphrase. Without it, the data is unreadable – even to us. Full security architecture.
“Wait, I can see all my contacts like that? How do I get this?”– Beta tester, first time seeing the people graph
“Built over 8 months of daily use and growing. 7,000+ people in the knowledge graph. 2 million+ data points. 14,874 wiki pages. 459 automated tests.”– The numbers
$24.99/mo replaces every AI subscription you are paying for. Unlimited. Local. No token limits.
| What you replace | Their cost | Ostler |
|---|---|---|
| ChatGPT Plus | $20/mo | Included |
| Claude Pro | $20/mo | Included |
| Copilot Pro | $20/mo | Included |
| Otter.ai (meeting notes) | $16.99/mo | Included |
| Notion AI | $10/mo | Included |
| Total | $86.99/mo | $24.99/mo |
Not the smartest AI on earth. The smartest AI about your life. For everything else, local models handle 80% of daily tasks with zero token limits.
A Mac with Apple Silicon (M1 or later). We recommend 24 GB of RAM for the full experience (M4 Mac Mini $699). The base 16 GB model works but runs smaller, less capable AI models. Starting with Mac. Designed for everywhere.
20 and counting: LinkedIn, Facebook, Instagram, WhatsApp, Twitter/X, Google Calendar, iCloud, email, and browser history. All via GDPR data exports – your legal right to your own data.
About 30 minutes of hands-on time. The GDPR data exports take 1–3 days to arrive from each platform. Once you have them, it is one command and you are running.
Yes. Your personal data never leaves your Mac. The AI models are local. No telemetry. No analytics. No data harvesting. Ostler does connect to the internet to fetch public information (Wikidata, web search) but never sends your contacts, messages, or personal data anywhere. Pull the plug on your router and the core features still work – you just lose web search and public data enrichment.
Local models via Ollama. Currently optimised for Qwen 3.5 (9B parameters) for the AI assistant and nomic-embed-text for vector embeddings. No cloud AI. No API keys. No usage bills.
Start with Home AI Hub ($49.99, one-time) to import and organise your digital history. Add Ostler ($24.99/mo) for continuous capture, Marvin on messaging, and unlimited AI – no token limits, no usage caps. $24.99 replaces $87 of cloud AI subscriptions. You never lose your data, even if you cancel. See full pricing.
Yes. Multiple layers: macOS FileVault encrypts the full disk. Your Ostler databases are encrypted with your passphrase using AES-256. Without your passphrase, the data is unreadable – even to us. We are commissioning an independent security audit before public launch. Full security architecture.
Yes. Creative Machines, based in Hong Kong. One founder, 8 months of daily use, 459 automated tests, 14,800 wiki pages generated from real data. Revenue comes from the subscription. We never see or monetise your data – we literally cannot.
Private. Unlimited. Yours.