What it actually does for you
Everything below ships today – it is not a roadmap.
Your memory, fixed
When did you last see Sarah? What did James say about that deal? Who introduced you to David? Ask your assistant or look it up in your personal wiki. Instant answers from your own history.
Always prepared
Pre-meeting reminders that tell you what you last discussed, what you promised, and what matters to the person you are about to meet. Walk in ready, not scrambling.
Daily briefings
A morning summary on your phone: what is on your calendar, who you are meeting, what you should remember. An evening wrap-up of what happened. Stay on top of your life without trying.
Clean address book
Ostler deduplicates, merges, and enriches your contacts across platforms. The nagging chore you never get round to, done automatically. Everyone you know, resolved and linked.
Birthday and anniversary reminders
Never miss another birthday. Never forget an anniversary. Ostler knows the dates that matter and reminds you in advance, not on the day when it is too late to plan.
Free AI forever
Ostler runs a local AI model on your Mac. No subscriptions, no usage limits, no cloud costs. Quality depends on your hardware, but it is surprisingly capable.
Your data stays home
If you have privacy concerns about Big Tech knowing everything about you, Ostler is the antithesis. You take your data back from them and keep adding to it, all in one place: your home.
Be present, not note-taking
Ostler captures and processes your conversations automatically. No more scribbling notes or trying to remember what was said. Be 100% present. It remembers so you do not have to.
Your own personal assistant
Your assistant wades through the communications you cannot keep on top of, helps prioritise the important things, and can respond on your behalf as you, or as your named assistant on its own iMessage or email account.
How much have I already forgotten?
The world does revolve around you.
Every platform you use puts itself at the centre and files you under ‘user’. Ostler is built the other way round: one living graph with you at the centre, and everything else – the apps, the devices, the people – orbiting it. That is why it can answer questions no chatbot can.
Who is this for?
Ostler is for anyone who juggles a lot of relationships and commitments. Founders, executives, consultants, salespeople, community organisers, anyone with a busy social or professional life. If you regularly think “when did I last speak to them?” or “what did we agree?”, this is for you.
It is not for people who live entirely in one messaging app with twenty contacts. If your life fits in your head, you do not need this. If it does not – and for most people over 30 with any professional responsibility, it does not – Ostler gives you the unfair advantage of perfect recall.
What it replaces
Ostler is not a to-do list or a note-taking app. It replaces the combination of:
ChatGPT & Claude
General AI queries, but with knowledge of your actual life.
$20/mo elsewhere
Meeting notes tools
Automatic summaries, action items, relationship context.
$17/mo elsewhere
Personal CRM
Relationship tracking with warmth signals, not just a contact list.
$10/mo elsewhere
The PA you cannot afford
Triage, scheduling awareness, response drafting, daily briefings.
$3,000+/mo elsewhere
Ostler is $99 once for the Hub, then $9.99/month for Ostler Pro (the ongoing intelligence layer). The Hub comes with the first 30 days of Pro free, so you can experience the full product before you decide. Hub stays yours forever.
See the full list of what Ostler replaces ›
The real question
You already have the data: thousands of messages, emails, contacts, calendar entries. Right now it is trapped, scattered, and forgotten. Ostler is the system that makes it useful. The question is not “do I need this?”. It is “how much have I already forgotten?”
