06 Cards
Collect what you love. Let it decide for you.
Dishes, films, places, ideas — kept in collections. Hit Decide for me and swipe: right is yes, left is pass.
Local by construction
Everything — the model included — runs on your machine. What you choose to share leaves sealed.
Private · Offline · A desktop app
A second brain that remembers. Yours alone.
Journal, AI companions, the people in your life as a living constellation, and 139 questions you have never been asked — with a model that runs on your own silicon. Locked with a password only you know.
free · no account to write · no telemetry
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Three promises
01
Local by default
A Gemma 3 model runs beside the app on a loopback port. Your words are answered on your own silicon.
02
Encrypted at rest
One password locks the whole thing. While the app is locked, none of it is decrypted anywhere — not on disk, not in memory.
03
Shared only on purpose
Sharing is opt-in, per person, per topic. Everything is sealed on your machine before it leaves it, and expires after two weeks.
The app
Five surfaces,
one sealed file.
01 Journal
Write it down.
Watch it come back.
A timeline rail of entries with a five-dot mood scale and tags. People from your network are recognised as you type and become quiet entity chips.
- Reflections Ask for a reading under any entry — the model sees only that page.
- Entities Names link themselves to the people in your network.
- Mood Five dots, no scoring, no judgement.
02 Questions
139 questions
you've never been asked.
Fourteen sections — self, philosophy, romance, sexuality, aesthetics, work, money, mortality. Sliders between named poles, multiple choice, open answers.
- Any pace Answer three or three hundred. Or hit Surprise me.
- Portraits Ask a finished section to be read back as a short portrait of you.
- Private by default The exposed sections are never used as background context.
03 Network
The people in your life,
as a constellation.
A force-directed map of who you know and who knows whom. Drag the nodes around; select one and a glass inspector opens.
- Mentions A 12-week sparkline of how often someone appears.
- Ties Who knows whom, drawn rather than listed.
- Notes An AI reflection on the friendship, grounded in your own entries.
04 Companions
Company that
never phones home.
Sage, Ember, Aria, Atlas and Nova are built in — or make your own with a sentence. Replies stream token by token while the model thinks.
- On your machine Every token is generated locally.
- Scoped They see what you chose to share, and nothing else.
- Yours Write a companion in one line and keep it forever.
05 Sharing — opt-in
Let people in,
one topic at a time.
Your journal never travels. What can travel is a short summary of it, written by the model on your machine, on a topic you defined — and only to a person you approved for that topic.
- You write the brief Each aspect is an instruction you can rewrite. Mood, work, what you're making, or something only you would think of.
- Per person, per topic One friend sees how you've been. Another sees what you're building. Nobody sees a list of what they're missing.
- Automatic or one at a time Let a topic flow to someone as it's written, or read every summary yourself before it goes anywhere.
- Gone in two weeks Then deleted — by your machine, by the service, and by the storage bucket, on three clocks that don't depend on each other.
By the numbers
Designed for
privacy and quiet.
Bytes of your writing we can read
we hold sealed blobs, and no key that opens them
0
Questions across fourteen sections
answered at your own pace
139
Of inference run on your machine
cloud AI is opt-in, your own key
100%
Days a shared summary survives
then deleted, on three separate clocks
14
And four more
One stack,
nine surfaces.
Runs on your machine
No cloud in the loop.
Thinking never leaves the machine.
On first run, kumulativ inspects your hardware, picks the largest Gemma 3 that answers quickly on it, downloads the weights once, and boots a llama.cpp server on a loopback port. From then on, thinking is a local matter.
weights
Gemma 3 — 1B, 4B or 12B, quantised Q4_K_M and sized to your VRAM or RAM.
selection
Chosen once at first run from a hardware probe; overridable at any time.
download
Fetched a single time from the model host, then cached on disk forever.
runtime
A llama.cpp sidecar process, started and supervised by the app.
acceleration
CUDA on NVIDIA hardware, Metal on Apple silicon, CPU everywhere else.
binding
Loopback only — the port is not reachable from your network.
at rest
One local file, sealed with XChaCha20-Poly1305 under a key only your password unwraps.
password
Stretched with Argon2id on your machine. Never stored, never transmitted, never recoverable by us.
keychain
Remembering a device stores the file's key in your OS keychain — never the password.
backup
Copy the file. It is useless to anyone without your password.
telemetry
None. No analytics, no crash pings, no first-run beacon.
accounts
Not needed to write. An email-verified account only if you opt into sharing.
sharing
X25519 per pair, sealed before upload. The service stores ciphertext and holds no key.
metadata
It does see who follows whom, and when you publish. That part we cannot hide, so we say it.
cloud AI
Optional, with your own API key — and labelled as the trade it is.
How it works
From download
to first entry in minutes.
No workspace to configure and no invite to wait for. Install it, choose a password, let it size a model to your machine, and start writing.
-
01
Install
Download the .dmg or the Windows installer. One human check, then a private link that expires in ten minutes.
-
02
Set a password
It encrypts everything the app keeps. Nothing about it leaves your machine, which is also why nobody can reset it for you.
-
03
First run
kumulativ probes your hardware, picks a Gemma 3 that answers quickly on it, and pulls the weights once.
-
04
Write
Everything after that is offline — unless and until you decide somebody should hear how you've been.
Download
Take it home.
Free. No account needed to write, no telemetry. One human check, then a private, time-limited link.
binaries live in a private bucket · links are signed and expire in 10 minutes