Kern
Your external brain
How it works Philosophy The App Sign In Sign Up Free
Live capture

Push
thoughts in.
Pull memories
out.

Start Free
Your external brain — Free to start
push thoughts up • pull memories down • your brain extended • AI classifies everything • knowledge graph • think freely • zero friction capture • semantic retrieval • push thoughts up • pull memories down • your brain extended • AI classifies everything • knowledge graph • think freely • zero friction capture • semantic retrieval •
TASK

Not another
notes app.
A thinking
interface.

Five ideas that make Kern fundamentally different from everything else.

01
🧠
type a thought...

Zero-friction capture

One text field. Type your thought, swipe up. No notebooks, no categories, no formatting. Just think out loud.

Capture
02

AI understands you

"Call mum about dinner" becomes a task, linked to a person, with urgency detected. Classification, entity extraction, connection — instant.

Classify
03

Living knowledge graph

Thoughts form a visual network. Tap nodes to filter. Watch clusters emerge. Discover connections you didn't know existed.

Connect
04
"What was that Italian spot?"

Semantic pull

Ask in natural language. "What was that Italian spot?" Kern retrieves by meaning, not keywords. It knows what you meant.

Retrieve
05

Your data, your terms

Local-first. Full export. No dark patterns, no vendor lock-in. Built under HINTL's human-in-the-loop philosophy.

Respect
Drag to explore
Philosophy
Your brain is for having ideas, not storing them. Kern is the space between thinking and forgetting.

Every note app asks you to organize. Kern asks you to think. The AI handles classification, connection, retrieval. Your job is just to be human.

The more you push, the smarter it gets. Note 500 is exponentially more useful than note 5. Your personal knowledge graph compounds into a second memory that's searchable, visual, and always there.

0
Seconds to capture
Connections
1
Text field
memory finance idea task
task person
Call mum about birthday dinner
push to brain
Research Audi Q6 e-tron lease options
2h ago · finance, task
Melbourne prices dropping — check Clyde
5h ago · finance, place
Amazing pasta from that Fitzroy place
3d ago · memory, place
The app

The graph is
the interface.

No sidebar. No folder tree. Your knowledge graph is the navigation — tap nodes to filter, combine them for compound queries, watch your thoughts rearrange in real time.

Push / Pull gestureSwipe to capture or query
Interactive graph filteringTap nodes to explore
Semantic searchMeaning, not keywords
AI entity extractionPeople, places, tasks
Proactive surfacingNever forget what matters

Remember
everything.

Free to start. Upgrade once for life. No subscription.

Pay once for unlimited. No subscriptions. No dark patterns.
A HINTL Product — Human in the Loop