Free and open source

Distraction-free, minimalist yet powerful incremental learning

The easiest way to start incremental reading and master your knowledge.

Download Amber Join the Discord

Linux·Windows·macOS·iOS·Android

Amber's main view: the element tree on the left, a document with highlighted extracts in the middle, and scheduling details on the right

The main view: your tree of elements on the left, the material in the middle, scheduling and details on the right.

Why Amber

You shouldn't have to study the study app.

Incremental reading is one of the most effective ways to learn, but traditional tools bury it under friction. Amber is built for beginners and experienced incremental learners alike, with a clean, simple design that never trades away the power you need.

Traditional software

Overwhelming stats and dashboards
Cluttered windows and bloated menus
Hours spent learning the software itself
One rigid way to study
Simpler apps that give up real power

Amber

A calm interface built around your reading
Only what you need, when you need it
Open it and start learning in minutes
Keeps your study habits and grows with you
Full incremental reading power, no compromises

How incremental learning works in Amber

Start simple. Four steps, a few minutes a day, nothing to configure.

Import

Bring in PDFs, ePubs or web content straight from your device.

Extract

Highlight the passage that matters. It becomes its own extract, linked to where it came from.

Make cards

Turn extracts into cloze deletions with a single tap, or let AI create cards for you.

Let it compound

The priority queue decides what you see next, so your knowledge grows naturally over time.

Highlight what matters. Amber remembers the rest.

Read in a clean, focused view. When something is worth keeping, pull it out and turn it into a card, right where you're reading.

Instant extracts

Highlight text and it becomes its own piece of your library.

Nested cloze deletions

Build fill-in-the-blank flashcards with a single tap.

Ask AI, get cards

Ask AI about a passage, or let it write the flashcards for you.

Always linked to the source

Every extract and card remembers where it came from.

Reading a document in Amber with a highlighted extract

Features

Everything you need. Nothing in your way.

Whether you're importing massive PDFs, creating flashcards, or just building better study habits, Amber adapts to you.

Incremental reading, without the learning curve

Reading, extracts and flashcards live in one prioritized queue, so you always work on what matters most. Keep your existing study habits and move into true incremental reading at your own pace.

Amber's element tree: a source with its extracts and a flashcard nested underneath

100% free & open source

Free in cost and in freedom (MIT licensed). You own your data and can export it anytime.

Effortless importing

Import PDFs, ePubs, web content and more straight from your device in seconds.

Multiplatform ready

Runs on your phone, tablet or computer: Linux, Windows, macOS, iOS and Android.

Cloud sync

Back up your library and sync progress, extracts and cards across devices.

A cloze card in Amber study mode with the Again, Hard, Good and Easy grades

Review less. Remember more.

Amber schedules your cards with FSRS, the modern open-source spaced repetition algorithm. Each card comes back right before you'd forget it, so you spend fewer reviews for the same retention.

Modern scheduling

A smarter successor to the decades-old SM-2 algorithm.

Built around your memory

Intervals adapt to how well you actually remember each card.

Four simple grades

Again, Hard, Good, Easy. That's all you ever press.

The philosophy

Built by someone who uses the method every day.

The biggest barrier to knowledge retention isn't the method, it's software friction. Amber lets you start simple, learn efficiently, and let your knowledge compound over time naturally.

Start your incremental learning journey today.

Download Amber Join the Discord

See you incrementally.