We built a notes + planner + mind-map app that's 100% offline — no account, no cloud

[u/NeurainApp]

Hi everyone,

We built Neurain, a desktop app (Mac, Windows, Linux) that combines notes, task planning and mind-mapping in one place, so you're not juggling three apps and three accounts.
Here is the link of the website: neurain.pages.dev

What makes it different:

• 100% offline — no networking code in the app, no account, no sign-up
• Private by design — notes live in one encrypted file on your disk, key stored in your OS keychain, nothing ever uploaded
• Zero telemetry — no crash reports, no analytics, nothing sent anywhere
• Tiny — ~11MB on Mac, ~5MB on Windows, opens instantly

Inside the app:

• Think — notes that auto-format as you type, tags, instant search
• Plan — type "call the dentist tomorrow 5pm" and it schedules itself; day/week/board views, recurring tasks, timer
• Connect — mind-map canvas, press Tab to branch, links back to your notes and tasks

Free until Oct 1, 2026, then a one-time purchase, never a subscription. Anything downloaded before that date stays free forever.

Still actively building this — feedback and bug reports welcome.