I built a notes app with only 128 KB of free storage — on purpose.

I built a notes app with only 128 KB of free storage — on purpose.

128 KB sounds ridiculous in 2026.

That’s exactly the point.

When I started building AstraNote, I wasn’t trying to create another giant knowledge-management system.

I wanted somewhere to keep the small pieces of text I actually need again:

A command.
A URL.
A reminder.
A code snippet.
A short instruction.
A private piece of information.

Text is tiny.

Even 20 notes with around 500 ordinary characters each can use only about 30 KB of plain text.

So instead of asking, “How much can we store?”, I started asking:

How quickly can you get the right piece of text back when you need it?

That became AstraNote.

It’s a browser-first notebook with no app to install. Sign in from another device, search the title, copy what you need, and move on.

But I also wanted small notes to be able to become serious when needed.

So AstraNote lets you choose privacy per note.

An everyday note can stay simple. More sensitive text can use AstraSecret or AstraConfidential. And AstraZero uses a client-generated key for each note, so the server does not hold a directly usable plaintext note key.

I took the same approach with AI.

Astra AI can reorganize or transform a note from a natural-language instruction, but it doesn’t silently overwrite anything. You get a complete preview first, and the note only changes if you choose to save it.

There are no ads and no analytics trackers.

The Free plan is deliberately small: 20 notes and 128 KB.

Paid plans aren’t just “more storage” either:

Plus → Organize
Pin, archive, batch manage, and AstraConfidential.

Pro → Protect
AstraZero and more room for private notes.

Ultra → Recover
Previous-version and trash recovery when something goes wrong.

I’m curious about one thing:

Would you use a notes app that deliberately tries to do less — if it meant the text you actually care about was faster to find, easier to protect, and harder to lose in the noise?