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The best app for quick note-taking.

IDEOI is the fastest way to take notes and collect ideas. Turn them into collections, mindmaps, kanban boards, and more.

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30-day free trial. No credit card required.

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The Problem

You keep sending yourself messages to save ideas...
and never find them again.

Our Solution

Lightning fast note-taking → Fluid organization

Our Solution

Lightning fast note-taking →
Fluid organization

Save your ideas immediately when they hit you.
Just type or paste your idea.

Ideas are connected automatically and AI is available everywhere. No need for manual tagging or categorization.

An AI generated image of an old man thinking, Greek style statue

"I think, therefore I am." René Descartes, AD 1637

Simple pricing

4.90€ / month / user
Eero Knuutila

"IDEOI's biggest strength is its flexibility, it lets you easily handle multiple lines of thought. Amazing for managing all the complexities of a company. The team is unbelievably responsive!"

Eero Knuutila, CEO at LignoSphere

Star Star Star Star Star

Includes:

✅ Unlimited documents and workspaces
✅ Extremely fluid interface
✅ Full ChatGPT integration with a context-aware chat
✅ Real-time collaborative and private workspaces
✅ Semantic search that understands your meaning Available Q3/2025
✅ ...and more!
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30-day free trial. No credit card required.