Learn better, remember more

Knowledge management powered by spaced repetition.

According to multiple studies, we quickly forget about 80% of everything we learn.

Spaced repetition is a proven method that fixes this. It is built upon a simple principle - we better remember things we encounter frequently.

It works by reminding you to review your notes at a spaced interval (in 1 day, in 3 days, in 10 days, and so on). The more you learn, the less frequent the note pops up for a review.

By regularly repeating your learnings, you will learn more efficiently and remember more for longer periods.

How it works?

1 Write

It could be anything - a book review, your favorite song lyrics, or that Wikipedia article you were reading last night.

2 Organize

Tags are used to organize your notes, and links are used to connect related ones.

3 Review

The app will remind you according to a spaced repetition schedule. All you need to do is check "Review" section regularly.


Spaced repetition

Spaced repetition helps your brain to improve the connection between the nerve cells. All you need to do is regularly check the "Review" section.


Flashcards are questions with answers. Use them to focus on specific facts (similarly to Anki).

Knowledge base

Use the full-text search to find a note instantly. Tag it for quick access from the tags sidebar.

Focus mode

Remove distractions and focus on what's important.

Build your personal knowledge network.

Organize and connect ideas in new ways. Should be familiar to Zettelkasten practitioners.

Public notes.

Throw a couple of meta tags and make your note visible to the world. Here's one of mine - How to organize your knowledge?

Your data belongs to you.

Your notes, tags, links, are all just text. Download all your data as an archive of markdown files anytime.


$9 / mo

- Unlimited private notes

- Unlimited tags

- Full-text search

- Spaced repetition

- Public notes

- No-distraction mode

(style="text-align: center; font-size: 14px;") Try it out. No credit card required.

(style="margin-bottom: 2rem;") F.A.Q.

How to learn efficiently?

Oh, it's a fascinating topic. I have recently written an article on learning and knowledge management, have a look!

Why rich editor?

Retaind editor is loosely based on markdown. That allows our users to structure information better than with the plain text. Elements like headers, bulleted lists, citations, and others are good for comprehension.

How reviewing works?

We believe in repetition. Every time you re-read your note, you get a chance to better understand, and to improve retention in your head. Thus reviewing your notes allows for better comprehension and remembering.

How do I tag my note?

Just add a word starting with # anywhere in your note. If you're familiar with Twitter, you should understand the concept. All your tags are always there on the left sidebar, you can use them to categorize notes.

That's why we came up with reviewing system. Every note go through 7 levels. Every time you review a note, it updates to the next level. Each level require more time till note is reviewable. So the first time you review your not in 1 week, and the last time in 6 month.

Can I export my data?

Yes. You can download your data at any moment. After all, your notes are just markdown files. To do this, go to Settings / Export.

Can I remove my account?

Yes. Go to Settings / Delete Account. Note that will completely remove all your data, so don't forget to export your notes first.