Modern flashcards
Real retention
Aesthetic, opinionated flashcards with AI-powered grading and FSRS scheduling. Import from Anki or Mochi, create cards manually, or generate them automatically with the CLI and Claude Code plugin.
Steps to never forget
Add Cards
Create manually or import from Anki and Mochi.
Claude Code Plugin
Auto-generate cards from your coding sessions.
Review
Answer in your own words. The AI grader evaluates your response and gives you a score with feedback.
Retain
FSRS schedules cards at scientifically optimal intervals. Review a little each day and actually remember what you learn.
Add Cards
Create cards manually or import from Anki and Mochi.
Claude Code Plugin
Auto-generate cards from your coding sessions in the background.
Review
Answer in your own words. The AI grader evaluates your response and gives you a score with feedback.
Retain
FSRS schedules cards at scientifically optimal intervals. Review a little each day and actually remember what you learn.
Built for developers who
learn by doing
LLM Grading
No rigid answer matching. An AI evaluates your free-form response against the source material and provides a score with feedback.
FSRS Scheduling
State-of-the-art spaced repetition algorithm. Cards surface at mathematically optimal intervals to maximize long-term retention.
Import & Export
Bring cards from Anki (.apkg) or Mochi (.mochi) decks. Export your collection any time. No lock-in.
Email Nudges
Escalating reminders when you skip reviews. Starts gentle (1 day), builds urgency (3, 7, 14 days), then stops. One-click unsubscribe.
Speech-to-Text
Answer cards by speaking. Hands-free review for when you're away from the keyboard.
Retention Analysis
AI analyzes your review history over time to surface patterns — what you consistently struggle with, where you're improving, and what needs more attention.
Supercharge with the CLI & plugin
Amber works great on its own. But if you use Claude Code, the CLI and plugin can generate flashcards from your sessions automatically.
$ npm install -g amber-cards && amber login $ claude plugin marketplace add julianwemmie/amber-claude-plugin $ claude plugin install amber-flashcards@amber Optional — the plugin runs automatically after each Claude Code session, generating cards in the background.