The only thing
you need to remember.

Your passport, your spare-key spot, the wine you liked, the promise you made — kept by an agent that knocks first.

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Your memos never train a model. Yours to export, anytime.

01 · CAPTURE

Save anything in chat.

Type, paste, or speak. Numen extracts the structure, gives it a home, and tells you 'Saved.' Nothing else.

Save the hotel — Park Hyatt Tokyo, Nov 12-18, reservation #PH-887234.
Saved.
Park Hyatt Tokyo · Nov 2026
02 · RECALL

Then ask anything later.

Vague queries land. The thing you wrote nine months ago is one sentence away — no scrolling, no folders, no remembering where.

Where did I put the spare key for the new flat?
On June 3 you said: brass bowl in the hallway, second shelf, behind the Penguin Classics.
Spare key · new flat
Pulse

You don't ask. It asks you.

Numen schedules its own outreach. Morning briefs, follow-ups on commitments you made weeks ago, nudges when something you cared about resurfaces — at the moment it matters, not the moment you remember to look.

nnumen.·Tue · 9:14

Three weeks ago you told me you'd intro Sarah to Lior. He landed in London this morning — want me to draft it now?

Commitment · 21 days agoOpen
nnumen.·Fri · 7:00

Your morning: gym at 8, the apartment-follow-up call at 10:30, and the dentist still owes you a callback. Coffee with Alex moved to 4pm.

Daily brief · 5 itemsOpen
nnumen.·Sat · 5:08

Last March you called the Coombsville Cab at Andrea's the best wine of the year. The shop on Bellenden has it for £28 — was £58.

Note · resurfacedOpen
Recall

Ask one thing. It connects everything.

Numen doesn't keyword-search. It walks the threads between what you've told it — chats, photos, contacts, decisions, promises — and hands back the answer assembled across years and across formats.

What's the Wi-Fi at my parents' place again?

saxon-quiet-pine-44 — your mum's Eero, the one you set up last March.

Recalled across 3 memos
Pulled from
password

Mum's Eero · Wi-Fi

saved Mar 2024

contact

Mum

Oxford · linked location

photo

Router sticker, kitchen

captured the same week

Or: “What did I think of that book Lior recommended?” · “Who introduced me to the wine I liked at Andrea's?” · “When did the doctor say to recheck?”

Eleven kinds of memory

Where you parked. The wine you liked.The promise you made.

A notes app stores text. Numen knows the difference between a password and a passport, a reminder and a regret, a voice memo and a contact. Eleven typed kinds — each rendered in the form it deserves, each searchable across the others.

Where I parked · today, 11:42
L3 · B47

Westfield · Shepherd's Bush

Near the Boots entrance.

2-hour ticket · back by 1:42 PM.

Voice · 4:47

Wed walk · Apr 22

Boiler filter. Mira's allergy form for school. Ask Sam about the ladder. Try the new place on Bellenden — Sara mentioned it.

Contact
MW

Marcus from the gym

Lives on Choumert · Apr 12
DaughterLily, also 4
Runscafé on Bellenden

Said to text about a pint sometime. Allergic to shellfish — mention that if dinner.

Quote

“I love you to the moon and back, but you have to bring me back too.”

— Mira, age 4 · bedtime, 18 Apr
Reading

Thinking in Bets

Annie Duke

“Judge decisions by quality of process, not outcome.”

Gift · Dad's 70th

Grant — Ron Chernow

Lior mentioned at lunch, 9 Apr.

Birthday Jun 14 · in 6 weeks
Health
4.9 mmol/L

Cholesterol · normal

Dr Patel · Clapham Surgery

Recheck Oct 27
Payment
Amex
Gold
•••• •••• •••• 0019
Exp
••/••
Cvv
•••

Amex Gold · primary

Travel card. Foreign-tx fee waived. 4× dining cashback.

Wi-Fi

Numen-5G

••••••••••••••••
Eero · Living room
Loved by early users

People who'd already replaced six apps.

4.8 / 5 from early-access users
I haven't dropped a follow-up in three weeks. The commitment tracker is the only feature I've used every single day.
Anya Lindberg
Anya Lindberg
Product designer · Lisbon
Replaced six apps with one. The 'today' brief is what every productivity tool should have built years ago.
Jane Okafor
Jane Okafor
Founder · Lagos
It's the first AI tool that doesn't feel like work. I just talk to it and things stay remembered.
Camila Reyes
Camila Reyes
Journalist · Mexico City

Private by design.

A second brain only works if you trust it with the things you wouldn't tell anyone else.

  • Encrypted on your device
    Your secrets are encrypted before they ever leave you. The key never touches our servers.
  • Visible only to you
    Every memo Numen has stored is inspectable. Tap to reveal — or to delete forever.
  • Yours to take with you
    Export everything as Markdown or JSON, anytime. Cancel and your archive comes with you.
Home WiFi
Password · 4 Jan 2026
Network / Site
Eero · Living room
Username
Numen-5G
Password
••••••••••••••••
Tap the eye. Numen reveals what you stored — and only what you stored.

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Questions, asked and answered.

The fears people have before signing up. We share them.

Where is my data stored?

On encrypted disk in EU and US regions, your choice. The encryption key is generated on your device and never leaves it — even Numen's servers can't read your memos.

Can I export everything?

Yes, anytime, on any plan. One click gives you a downloadable archive in Markdown or JSON, with attachments, structured exactly the way Numen sees them internally. No dark patterns, no waiting.

Does the AI provider see my private memos?

Only the snippets relevant to a given chat turn are sent to the model, and never stored on the provider's side. We use enterprise zero-retention agreements with Anthropic and OpenAI. Your secrets aren't training data.

What happens to my memos if I cancel?

They stay yours. After cancel you drop to the Free tier — your existing memos remain accessible (read-only past the 50-memo limit). You can export them, delete them, or pick up where you left off if you re-subscribe.

How is this different from a notes app?

A notes app stores. Numen remembers. The difference is recall: ask a vague question months later and Numen finds the answer, synthesises across memos, and shows you patterns over time. Notes apps make you do that work.

Isn't this just ChatGPT with memory?

ChatGPT remembers things you say to ChatGPT — inside one conversation product, walled off from the rest of your life. Numen is a typed memory system: passwords, passports, decisions, contacts, commitments, voice memos, photos, reminders, events — eleven kinds, each with its own structure. And Numen's agent reaches out to you on its own (Pulse) — morning briefs, follow-ups on commitments you made weeks ago. ChatGPT waits until you remember to ask.

Is there a mobile app?

iOS and Android are in beta. The web app at numen.to works on phones today — saving via voice and photo are designed mobile-first.

Start with what
you'd otherwise forget.

No credit card. Free forever for the first 50 memos. Set up in under a minute.

Numen, in your pocket.

Coming to iOS and Android this June. Worth the wait.

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