How it works
Learn from what you don’t know
Save phrases you couldn’t say or didn’t understand. Review them before you forget. Listen until they feel natural.
Lacuna means gap — an app to help you find the gaps in your knowledge.
What you do
Capture
Type a phrase you couldn’t say or didn’t get, then save it.
Study
Review when it’s due — before you forget.
Listen
Hear your phrases until they feel easy to say.
Levels
Levels track words you still remember and out-of-app practice. They’re a guide, not a certificate.
- Building
- Saved, still settling.
- Known
- Still recallable after about three weeks.
Each level needs enough known words and out-of-app practice. That practice is required from Level 2.
Names roughly follow CEFR. They don’t replace real practice with people and media.
Lacuna helps with the phrases you bring. Real life does the rest.