Flash FluencyKOREAN · iOS & ANDROID
Select. Study. Speak.
Pick anything you want to learn Korean from. We turn it into lessons at your level, then coach you through actually saying it.
1SELECTwhat you want to learn
Drop in anything you want to learn.
An article, a song, your class notes. Whatever you drop in becomes your lessons. Or start with the core curriculum: complete beginner to advanced, plus 100+ topic packs.
Content-to-CurriculumCore curriculum100+ topic packs
5,000 core vocabulary · 320 grammar points
2STUDYevery word, all the way down
Study it four ways.
Study every vocab word and grammar point through +1 SRS sentences pitched just above your level. Two exercises to prove you understand it, two to make you produce it.
+1Every sentence introduces at most one new concept, so you're always learning and never overwhelmed.
SRSEvery concept comes back at the optimal interval, so what you learn stays learned.
COMPREHEND
ReadingListening
PRODUCE
Fill in the blankTranslation
320 grammar lessons · a vocab lesson for every word you meet · one tap away
3SPEAKconfidently
Speak as well as you read.
Every pronunciation attempt is analyzed sound-by-sound so you know exactly what you're saying correctly and what sounds need work.
Guided ConversationsDEC 2026
Order coffee, ask for directions, make plans. Shadow it, then do it yourself.
Open ConversationsDEC 2026
Discuss the news article you uploaded last week, in Korean.
Every Korean pronunciation rule
Start free. Upgrade when you're ready.
LAUNCH PRICINGFree
$0
3 exercises a day across reading, listening, pronunciation, and fill-in-the-blank.
Core
$6 /mo
Unlimited core exercises, 10 translations a month, vocabulary topics.
Premium
$13 /mo
Everything in Core, 100 translations, Ask Flash, plus every dated feature above as it ships.
1 week free trial · $10 and $20 after launch
Ready when you are.
Free to start. No card. iOS and Android.