Notis vs. Kortex: Voice-to-Notion chief of staff vs. AI second brain

Quick Take

If you live in Notion and want to automate capture and follow‑ups from WhatsApp or Telegram, Notis is your AI chief of staff. If you’re a creator looking for an all‑in‑one, distraction‑free writing and highlights workspace, Kortex brings focused power. Notis extends Notion via messaging and automation; Kortex is about building your own AI‑powered “second brain” for writing and study.

Product Overviews

Notis

AI assistant for Notion, accessible via WhatsApp, Telegram, email, or Raycast. Transcribes voice, drafts documents in your style from your Notion content, runs web and RAG searches, handles automations, reminders, and connects to 30+ apps (beta). GDPR‑aligned, no LLM data training.

Kortex

An AI‑powered second brain for writers and creators. Capture ideas/highlights (with Readwise sync), organize in a connected library, write using Kortex Elements and kAI tools. Export to Markdown; designed for minimalism and creativity.

Head‑to‑Head Comparison

Key Differences Explained

Messaging‑first capture vs. focused, in‑app writing

• Notis: Built for capturing, organizing, and acting on ideas by speaking into WhatsApp/Telegram, then following through in Notion and email.

• Kortex: Optimized for compiling highlights and writing with kAI/kAI+ inside a calm, connected editor.

Notion layer vs. standalone workspace

• Notis: An “AI Notion interface” that reads/writes your pages and databases and can query them with RAG.

• Kortex: A purpose‑built writing/knowledge workspace; integrates with Readwise; imports/exports Markdown but isn’t a live Notion layer.

Automating follow‑through

• Notis: Recurring reminders, webhook triggers, and post‑call automations chain “capture → draft → save → notify” across apps.

• Kortex: Focus remains on capture, synthesis, and writing; cross‑app automations aren’t the goal.

Which One Should You Choose?

• Executives & chiefs of staff: Notis—run your day by voice; turn meetings into minutes, tasks, and emails without opening your laptop.

• Consultants & sales: Notis—capture client calls, generate follow‑ups, and automate CRM‑style updates via Notion.

• Engineers & operators: Notis—query specs, summarize docs, and schedule recurring reports with minimal context‑switching.

• Writers & creators: Kortex—a dedicated, low‑friction writing brain with highlights and templates (Elements).

• Students & researchers: Kortex—organize books/articles/YouTube insights and draft with kAI on top of your highlights.

• Bottom line: Notis is best for voice‑to‑Notion workflows and cross‑app follow‑through. Kortex excels as a focused, AI‑assisted writing and research space.

Wrap‑Up

Both tools make you faster—just at different layers. Want to automate and capture your work through chat apps into Notion? Notis is your AI chief of staff. Prefer a fresh, distraction‑free writing brain with powerful highlights? Try Kortex.