🛠️ Tool
✓ Link checked
Freemium
Beginner
Why we picked it The answer only works if you actually keep the running idea log, and this is a simple, free place to keep it. Obsidian stores plain text notes on your own device and lets you link ideas to each other, so a scattered pile of "problems I noticed" slowly turns into a connected map. Notion works just as well if you prefer it; the point is one always-open home for the log, not the specific app.
Obsidian
From Obsidian by Obsidian
- Free and local-first: your notes are plain Markdown files on your own device, yours to keep.
- Linking notes lets loose idea fragments connect over time instead of getting lost.
- Fast capture plus a searchable log is the whole habit this question is built on.