Capture Anything
Convert to Knowledge
Import any file, link, or video and SigmaNote turns it into editable, AI‑powered notes you can search, chat with, and organize—anytime, anywhere.
Capture Anything,
Anywhere Anytime
Whether you're clipping a quick web link or importing a 300‑page PDF, SigmaNote turns every source into clean, editable notes you can search, chat with, and organize across all your devices—no copy‑paste required.
Clip from anywhere
Save articles, YouTube videos, docs—even directly from Safari, Dropbox, or Mail.
Instant conversion
One tap turns contents into AI‑ready Markdown—no formatting mess. You save as editable notes, compare with the original, and chat about—all in one tap
Chat with your notes
Ask follow‑ups, get summaries, brainstorm ideas—right inside each document.
Organize your way
Drag into spaces (folders) to keep notes in order.
Smart Note Editor
Draft rich‑text notes and let AI organize, reference, and act on them whenever you ask.
Task‑Aware Chat History
Open the preserved original file—exact layout, images, and links—any time without leaving your note.
Hear it from our users
"SigmaNote turned my 200‑page lecture PDFs into a bite‑size study guide overnight."
— Catherine W.
"I drop a client deck in, ask two questions, and walk into meetings fully prepped."
— Peter Z.
"Finally, one workspace where raw sources, my own notes, and AI chat live together."
— Matt P.
How it works
SigmaNote turns every piece of content—files, links, or your own words—into living, AI‑powered knowledge you can recall and act on in seconds.
Capture Anything
Share a PDF, paste a URL, or fire up the built‑in editor. SigmaNote grabs the source and pulls it into your workspace.
Convert & Edit Effortlessly
In one tap the app cleans the content into Markdown you can tweak, tag, and link—while the original stays safely viewable.
Chat, Find, and Grow
Ask follow‑up questions, cross‑reference old notes, or let AI summarize your stack. Your second brain just keeps getting smarter.
Frequently asked questions
Yes. The Starter tier is free forever and lets you convert up to 20 files or links per month, chat with AI 15 times, and store 1 GB of notes. When you need more capacity, you can upgrade right inside the app.
PDF, EPUB, Word, PowerPoint, Excel, web articles, YouTube links (auto‑transcript), and any file shared from other iOS apps (Files, Dropbox, Safari, Gmail, etc.). More formats are on our roadmap.
All notes are stored using end-to-end encryption; sync traffic is protected with TLS 1.3. We never use your content for model training. You can delete notes, original files, or entire chat threads at any time—permanently removing them from our servers.
Yes. Subscriptions are managed through the App Store. Changes take effect at the next billing cycle, and you keep full access to any credits already allotted for that period.
You can cancel your subscription anytime from your account settings. If you cancel, you'll still have access until the end of your billing period.
Please use our offical discord server by clicking contact us button to get help if you run into issues.
Pricing
Free
$0
Get started for free
- 15 Conversations / month
- 10 Prompts / month
- Max file size: 2MB
- Full access to all features
Premium Monthly
$4.99
For individual users
- 400 Conversations / month
- 300 Prompts / month
- Max file size: 5MB
- Full access to all features
- Premium AI Model
Premium Yearly
$49.99
For individual users
- 400 Conversations / month
- 300 Prompts / month
- Max file size: 5MB
- Full access to all features
- Premium AI Model
Premium Plus Monthly
$9.99
For professionals
- 1200 Conversations / month
- 1000 Prompts / month
- Max file size: 15MB
- Full access to all features
- Premium Plus AI Model
Premium Plus Yearly
$89.99
For professionals
- 1200 Conversations / month
- 1000 Prompts / month
- Max file size: 15MB
- Full access to all features
- Premium Plus AI Model
Unlimited
Contact us
For enterprises
- Unlimited Conversations / month
- Unlimited Prompts / month
- Max file size: unlimited
- Full access to all features
- Unlimited AI Model
Get started for free
Build your personal AI knowledge-base by scanning QR code or clicking the links below.
