52-Card Learning System
Piano Deck
Master chords, scales, key signatures, and theory through spaced repetition. Every card earns its place — your deck is built from what you actually need to practice.
10
Preview cards
6
Theory topics
SM-2
Spaced repetition
0
Login required
What the cards look like
10 cards included in the preview. No account required.
Six theory fundamentals
Every card belongs to one topic. Your weak topics get more cards — automatically.
Key Signatures
Sharps, flats, relative keys, and circle of fifths.
Intervals
Perfect 5ths, major 3rds, minor 3rds, and tritones.
Chords
Major, minor, diminished, dominant 7ths — every essential quality.
Scales
Modes, pentatonic, minor variants — named and heard.
Rhythm
Note durations, time signatures, and compound meter.
Functional Harmony
ii–V–I, cadences, secondary dominants, Roman numerals.
How it works
1
Cards start in your active deck
A short diagnostic shows what you already know. Cards you miss go into your personal practice deck.
2
Answer and rate yourself
Multiple choice and true/false questions. Correct? Rate how well you knew it. Wrong? The card comes back sooner.
3
Cards go Gold when mastered
Answer a card correctly three times with growing intervals. Gold cards review less often so you keep them without dwelling.
Preview
No login required
Try before you decide
✓10 cards across all 6 topics
✓Full SM-2 spaced repetition
✓Progress saved locally
✓No account required
Start Preview →FULL DECK
Full Access
No subscription
One-time purchase
✓All 52+ cards across 6 topics
✓Full SM-2 spaced repetition
✓Adaptive weak-topic biasing
✓Per-topic stats & mastery grid
✓Bookmarks & card inventory
✓Synced across devices
Get Full Access →Start with the preview.
10 cards. No account. No subscription. Opens on your phone in seconds.
Open Piano Deck →