SigmaNote vs Levity Markdown Notes

SigmaNote — AI-Powered Knowledge Hub SigmaNote lets you build your own AI-powered knowledge hub — a single place to capture, manage, learn from, and create knowledge. It goes beyond notes or chat. SigmaNote gives you AI agents that work with your knowledge, across every format. Capture Knowledge from Anywhere Bring knowledge into SigmaNote from any source: • Notes and markdown documents • PDFs, files, and document scans • Images with OCR • Web pages and web archives • YouTube videos (with or without subtitles) • Voice recordings and system audio • Real-time, multi-language transcripts No format limits. Everything becomes searchable and usable. AI Agents That Organize for You SigmaNote’s AI agents help you: • Find relevant knowledge instantly • Organize content into the right Spaces • Connect related ideas across files and formats • Reduce clutter as your knowledge grows Your knowledge hub stays structured — without manual effort. Learn by Listening, Reading, and Conversation Knowledge shouldn’t just sit there. With SigmaNote, AI agents can: • Proactively read or speak knowledge to you • Explain complex topics in simple terms • Answer questions grounded in your materials • Help you think through ideas step by step It’s like discussing your knowledge with a personal tutor or teammate. Talk to Write. Build New Knowledge. SigmaNote introduces voice-driven AI writing. You can talk to an AI agent to: • Write new documents • Edit and update markdown files • Refine ideas through conversation • Create knowledge using your entire hub or a selected document This turns thinking out loud into structured writing — powered by everything you’ve learned. From Capture to Creation SigmaNote supports the full knowledge lifecycle: • Capture information • Understand it with AI • Absorb it through reading and listening • Create new knowledge by talking and writing All in one personal system. Who It’s For Students, researchers, founders, consultants, lawyers, clinicians, creators — anyone who wants to own their knowledge and build with it. Why SigmaNote • One hub for all knowledge formats • AI agents grounded in your data • Learn by conversation, not just reading • Turn knowledge into output Legal Term of services & privacy policy: https://www.signifyid.com/terms/view.html?doc=privacy_policy https://www.signifyid.com/terms/view.html?doc=term_of_service

Levity is a fast Markdown editor for your own plain-text notes, based on a folder in iCloud Drive or on your device. No account, no proprietary database, no separate sync service to set up. Point Levity at a folder and it mirrors every Markdown file inside it, and keeps mirroring as they change. Built for speed on your phone and read-compatible with Obsidian vaults. Levity opens, scrolls, and searches instantly, even in a large vault. It's tuned for mobile from the first line of code. If you already keep an Obsidian vault, Levity reads it as-is: the same files, the same folders, the same frontmatter. Your notes are just text files. They live in your own iCloud Drive or on your device, sync through your own Apple account, and open in any other editor. A live, clean editor: • Formatting appears as you type. The raw Markdown symbols stay out of your way, while your files stay pure Markdown on disk • Headings, bold, italic, task lists, checkboxes, blockquotes, code blocks, and tables you can edit cell by cell • [[Wiki-links]] between notes, with autocomplete • Inline images • A formatting bar, so you never have to hunt for a raw symbol Organize without a database: • Tag your notes and filter by tag • YAML frontmatter — add any property you like (status, type, dates, lists) and build filtered views around it • Folders, templates, archive, and trash • Full-text search across every note, instantly Made yours: • Seven themes, plus an automatic day / night mode that follows your surroundings • Adjustable font, size, and spacing • Designed for both iPhone and iPad Levity is focused and supports text, tags, and links; no graph view or plugins, just the fastest way to write and read Markdown on iOS, on top of files you already own. Free to start. One optional yearly subscription unlocks unlimited note creation and editing; reading your notes is never limited. Your privacy, by design: your notes stay in your own iCloud or device storage. Levity Premium is an auto-renewing subscription billed yearly. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/