Generate.Speak.Learn.Listen.Discover.

Your notes are plain markdown files. AI writes them. Noesis makes them intelligent. You just think.

A whole new way to think

Everything Noesis can do

Cards move slowly on their own. Shuffle to discover a new combination.

Import from URL

Paste any article URL — or a tweet thread, or an X post. Noesis fetches the page, then an AI pass adds a TL;DR, section diagrams, key takeaways, and enriched metadata. Clean markdown in one click.

2

Two AIs. Two perspectives. One deeper understanding.

Every note gets commentary from Echo (who builds on your ideas) and Whisper (who pokes holes in them). Like having a supportive mentor and a sharp critic — at the same time.

Echo and Whisper AI responses in Noesis
Echo & WhisperNavi PersonasCompanion Panel

Dictation Refinement

Fixes your speech as you talk — grammar, word choice, and fluency corrected in real-time before the sentence even ends.

Learn in Flow

Meet FlowLearn. Learn English without even trying.

Subscribe to YouTube channels you already enjoy. FlowLearn turns every video into a language lesson — vocabulary, comprehension, and listening exercises that feel effortless.

A
Vocabulary MCQ4 Qs
B
Fill in the Blank6 Qs
C
Dictation3 Qs
YouTube ShortsLong Videos10 Exercise TypesSpaced Repetition

Cloud Sync

Your notes everywhere — local files and cloud, always in sync.

See it in action
Navi Chat
Just realized why I never remember what I read — highlighting feels productive but I'm not processing anything. It's all passive.
E
Echo
Exactly right. Passive re-reading creates an "illusion of knowing" — you recognise the text but never retrieve it. I'm saving this as a note…
Note created — Why Highlighting Doesn't Help Memory

Generated note

Why Highlighting Doesn't Help Memory

Passive re-reading builds familiarity, not recall. Explaining ideas back in your own words — elaborative interrogation — is what actually makes them stick.

learningcognitionPKM
Synced · linked to 2 related notes
For Power Users

Your knowledge base has superpowers.

Claude Code connects to Noesis with 30+ tools. Search, sync, enhance — all from a terminal. Each Navi can run a different AI model.

Terminal

$ claude

# What did I learn about auth?

search_semantic("auth flow")

> Found 3 notes (0.89, 0.84, 0.71)

# Sync local notes to cloud

sync_notes()

> Synced 12 files (3 new, 9 updated)

Claude Code30+ MCP ToolsMulti-ModelTerminal

Image Shelf

Stage screenshots once, drop them into any chat. Synced live across tabs and devices — never re-upload the same image twice.

Learn in Flow

Listen, don't just read.

Vocabulary you've looked up plays back as a podcast — an LLM teacher narrates examples, words karaoke-highlight as TTS speaks them. Works for English and Mandarin (per-character highlighting). Tap any line to repeat.

TeleprompterKaraoke HighlightingMandarin & EnglishLLM Teacher Script
Vocab Listening

Today's vocab review · 14 words

Voice: Aria · 6:42 / 12:30

Now reading…

A meticulous editor catches every typo before publication.

中文逐字朗讀

那 次 考 試 簡 直 是 菜 一 碟。

0.9×

PDF to Markdown

Turns any PDF into clean, searchable notes in seconds — including scan-only documents. AI OCR extracts text from image-only pages automatically.

AI Dictionary

Look up anything. In any language.

Not just words — idioms, slang, and technical terms. Now with a dedicated 國語辭典 for Mandarin. Select a quoted phrase to ask "what does this mean here?", jump through related forms, save lookups to Noesis, or share any entry as a public link.

English + 國語辭典Contextual LookupWord FormsSave to NoesisShare via Link
Dictionary
piece of cake

Translated: piece of cake →

小菜一碟輕而易舉易如反掌
piece of cakeAuto

AI Explanation

An informal idiom meaning something very easy to accomplish, requiring little effort.

Example Sentences

1. The exam was a piece of cake.

那次考試簡直是小菜一碟

Language Tools

Dictionary, translator, TTS — 8 languages built in.

For Language Learners

Your reading companion. On every page.

Import any book and read it in Noesis. Select a phrase you don't know — a Companion button appears instantly. Your AI tutor breaks it down in context. Set your Navi to "JK Rowling" and have her explain her own writing.

Reading Companion — book reader with Navi vocabulary panel
Real BooksSelect & AskBilingual VocabularyCustom NaviPDF Import

Text-to-Speech

Reads aloud with word-by-word highlighting — and per-character for Mandarin & CJK. Edge voices by default; preview each one before you pick.

Install as App

On iOS, tap Add to Home Screen. On Android, tap Install App. Noesis runs full-screen like a native app — no App Store needed.

JIRA Import

Import any JIRA issue as a clean markdown note — title, description, and code blocks all preserved. Backlog knowledge, searchable.

Share as Public Link

Publish any note, dictionary lookup, or chat as a read-only link — with a rich preview card (title, image, description) when shared in Slack or iMessage. Viewers can annotate or import it into their own library.

Did you know?

A chat with AI can be a note too.

Mark up any AI message — circle a key line, drop a sticky, scribble in your own handwriting. Spin the thread out as a note, then keep chatting and the note grows with the conversation.

Handwriting MarksHighlights & CirclesSticky NotesGenerate NoteMerge Later Replies
Navi Chat
What actually makes learning stick long-term?
N
Active recall beats re-reading every time — retrieve, then review.
add this to spaced-rep note!
Generate Note
Merge into existing

30+ MCP Tools

Claude Code connects to your notes with 30+ tools — search, sync, enhance, discover.

3

Ask for it. It's already there.

Forget digging through folders. Ask in plain language and Noesis finds exactly what you need — even things you forgot you knew.

things I learned about focussemantic

Deep Work — Cal Newport Notes

focusproductivity
0.94

The Pomodoro Method

focustechnique
0.87

Why Distraction Spreads

attention
0.81
14 more results
Semantic Search30+ MCP ToolsRAG Chat

Melody

Hover the nav and your notes sing. 40+ classical pieces, six playful instruments — Hum, Robot, Fairy, Ghost, Alien, Dog.

Open Ecosystem

Works with the tools you already use.

Your notes are plain markdown files. Edit them in Claude Code, Obsidian, or VS Code. Noesis adds the intelligence — search, AI commentary, cloud sync — without lock-in.

Claude CodeObsidianVS Code.mdNoesis AISearch · Sync · Enhance
Claude CodeObsidianVS CodeNo Lock-In.md Files

Voice Input

Speak in any language — AI corrects your speech in real-time, even while you're still talking. Auto-stops on silence.

Scroll History

Navigate your reading history with ← → — jump back to where you were after clicking a link or heading, just like a browser tab.

1

AI writes. You think.

AI generates your notes automatically. Import a PDF. Have a conversation. Your knowledge base grows — without you typing a single note.

Noesis Chat
I just read about spaced repetition and how it beats re-reading...
N
Captured! Linked to your 3 existing memory notes.
Note created · linked to 3 related

Spaced Repetition vs Re-reading

learningmemorycognition
PDF & URL ImportVoice DictationMCP ToolsCloud Sync
Think on the Page

Annotate notes like paper — but better.

Drop handwriting strokes, circles, rectangles, arrows, serial number badges, link pins, sticky notes, and icons onto any paragraph — even images and Mermaid diagrams. New: text-style markers apply formatting annotations, and floating shapes hover freely anywhere on the page. Vivid palette, full undo/redo.

Shapes & ArrowsSerial NumbersLink PinsImage & MermaidText Style MarksFloating ShapesUndo / Redo
Spaced Repetition
Reviewing at expanding intervals beats cramming.
The forgetting curve flattens with each recall.
Active retrieval > passive re-reading.
review weekly →
A⁻ A⁺

BYOK Multi-Key

Bring your own AI keys. No subscription. Your cost, your control.

Meet your Navi

Design any AI persona. Give it a voice.

Build a Navi with any ability — English tutor, coding mentor, writing coach. Shape its personality. Set its avatar to JK Rowling or your favorite character. Then just chat, like a messenger app. With TTS and dictation, it feels like a real conversation.

Custom PersonaAny AbilityTTS VoiceDictationRole Play
Your Navis
S

Sensei

English Tutor

kindTTS
A

Ada

Code Mentor

preciseKB
R

Rowling

JK Rowling

storyteller
M

Coach Max

Writing Coach

crankyfun

Quiz from Any Section

Hover any heading in the TOC sidebar and click Quiz Me — generate a focused quiz on just that chapter, without leaving the note.

For Language Learners

Quiz yourself on what you read.

Generate a vocabulary exam from any note in one click. Take it inline as an interactive note — answers live in pre-placed text-note markers. Submit, and the AI grades MCQs deterministically and translations with Gemini. A red Score: 18/20 marker locks the page.

Auto-GeneratedMCQ + TranslationAI GradingLength Presets
Vocab Exam · 2026-05-01

1. The word "meticulous" means…

careful and precise
unwilling to act

2. Translate "piece of cake"

小菜一碟
Score: 18 / 20
graded · locked

Echo & Whisper

Two AI voices, one deeper understanding. Echo builds on your ideas; Whisper pokes holes in them.

Quick Note

Capture a thought in one click. Notion-style WYSIWYG with headings, lists, and quotes — autosaves as you type.

Pricing

Wait, how much does AI cost?

Bring your own Claude or Gemini API key — you pay only for what you use. Noesis auto-switches providers if one quota runs out. No subscription required.

Claude API
sk-ant-••••ABCD
Gemini API
AI••••••WXYZ
auto-failover on quota limit
Your KeysClaude APIGemini APIAuto-FailoverPay-as-you-go

Image Generation

Generate and edit images with Gemini Pro directly inside your notes and chat.

For Language Learners

AI tutors that actually know what you're studying.

Create a Navi persona as your language tutor. Listen to any sentence with word-by-word highlighting — then repeat with voice dictation while AI corrects your speech in real-time. Echo explains grammar; Whisper flags mistakes native speakers would catch.

Word-by-Word TTSLive Voice DictationSpeaking PracticeIPA Feedback
Navi Chat
Is "Je suis allé au magasin" correct?
E
Echo
Great start! "Je suis allé" uses the passé composé with être correctly. The verb "aller" always takes être as its auxiliary.
W
Whisper
Watch the agreement — if you're female, it should be allée. Past participles with être agree with the subject. A native speaker would notice.
Reading: female
Noesis

Your notes should make you smarter.

Not just store information — generate it, challenge it, and find it when it matters.