Your personal language coach
Welcome to the adaptive era of language learning.
Lemma maps exactly where you are and generates flashcards, stories, podcasts, and novels at your exact level. It adapts every day as you grow. It's one of a kind.
Generated for you, in real time
What sets us apart
The more you use it, the better it knows you.
Lemma learns your exact level, your interests, your strengths, and your weak spots — and uses all of it to generate content made just for you.
It maps you from day one
An adaptive test pinpoints your real vocabulary and grammar. No self-reporting, no guesswork.
It calibrates to you, not the other way around
Every exercise feeds your language profile. What comes next is more challenging where you're strong and more approachable where you're still growing.
It grows with you, from A1 to C2
Your progress isn't measured by “streaks,” but by how much your real command of the language grows. Lemma measures it with unmatched precision. Use it daily to truly grow.
Your language profile
Your next story will be calibrated to what you know right now.
What's inside
Four ways to progress. One account.
Everything you need to take a language from zero to fluent, in one place.
Decks
The core of vocabulary. Flashcards by level and topic, with spaced repetition that shows you each word right before you'd forget it. Inside every card: an explanation in your language, examples, and answers — generated on the spot.
Spaced repetition + AIQuick Practice
Short readings and audio capsules, generated instantly, that mix the vocabulary you've already studied with new words to challenge you. Calibrated to your exact level.
Reading and listeningLibrary
Eight-chapter short novels, written by AI at your level, with cover art and an immersive reader. Pick the genre and the world. You'll never run out of something to read made just for you.
Immersive readingPartners
Create partners with different personalities and practice by text or voice. Real conversation that sharpens your expression — and gives Lemma a precise read on your progress.
Text and voice conversationThe finishing touch
A tutor that never leaves your side.
The Lemma Coach is one tap away from any screen. It knows the language, it knows the app, and it knows your goals.
Answers any question
Ask it anything about the language you're studying, the moment you need it.
Sees what you see
It's aware of the screen you're on, so its help always comes with context.
Takes action for you
It builds decks, assigns tasks, and puts together a plan toward your goals — always asking your permission before it proceeds.
“The best language app is the one that adapts to you — not the one that forces you to adapt to it.”
Learning a language is a challenge. Using your tool shouldn't be.
That's why Lemma is so intuitive: everything is one tap away. No tangled menus, no learning curve. You open it and, within seconds, you're already learning.
From the blog
How each language actually works for an English speaker
Full guide
Learning Chinese as an English speaker
The consonants every guide tells you to fear are already in your mouth. The vowels you assumed you had are where you'll actually go wrong. Sorting that out in week one saves you a year of sounding off.
Full guide
Learning Japanese as an English speaker
Japanese has a reputation it only half deserves. Speaking it is one of the friendliest jobs you could take on; the writing is where all the work lives. Knowing that on day one changes where your hours go.
Full guide
Learning Korean as an English speaker
Korean looks impossible and isn't. The alphabet takes a weekend, hundreds of words are already yours, and there are no tones. The real difficulty is somewhere nobody warns you about — and it isn't the writing.
Full guide
Learning Spanish as an English speaker
Spanish gives away more in the first month than almost any language you could pick. That generosity is exactly why so many English speakers get to «I can order food» and stop there for a decade.
Pricing
One Lemma. Pro takes the limits off.
Lemma runs on a weekly allowance of uses that resets every week. Lemma Pro removes it: generate as much as you want, every day.
Lemma Pro
or $109.89 a year — you pay for eleven months
All of Lemma, no limits.
- Unlimited AI decks
- Quick Practice and listening
- Novels generated at your level
- Partners by text and voice
- The Coach
- always available
- Dictionary and grammar
Price in USD; converted to your local currency at checkout.
Frequently asked questions
What people ask before signing in
What is Lemma?
A language-learning app that generates your material to fit you. It measures your real level skill by skill and from there creates flashcards, stories, audio, novels and conversations calibrated to that exact point, recalibrating as you progress.
Which languages can I learn?
Ten: Chinese, English, Spanish, Portuguese, French, Italian, Japanese, Korean, Russian and Arabic, each with its own guided course track. We keep adding more.
How is it different from other language apps?
The content isn't made in advance for everyone — it's generated for you. A streak app hands you the same lesson it hands a million other people; Lemma calibrates every card, reading and audio clip to what you already know and where you struggle. That's why you never run out of material or stall at a level.
How much does it cost?
Lemma Pro is $9.99 USD a month, or $109.89 a year, which works out to paying for eleven months. That's less than a single private lesson a month. Lemma runs on a weekly allowance of uses that resets every week; Pro removes those limits.
Is it useful if I'm already intermediate or advanced?
That's where the difference shows most. The classic intermediate problem is that material made for your level runs out and you get dropped into native content that's still too hard. Here there's no catalog to exhaust: the content rises with you, up to C2.
How does it know my level?
An adaptive placement test when you join, measuring you skill by skill — vocabulary, grammar, reading, writing, listening and speaking — instead of giving you one number. Every exercise afterwards refines that profile.
Can I practice conversation?
Yes, by text and by voice, with partners of different personalities that you create. In Chinese, Korean and Russian your pronunciation is also scored, pointing out which sound didn't land.
Do I need to install anything?
No. Lemma runs in your desktop and mobile browser, and you can pin it to your home screen like an app. You sign in with your Google account.
Your language. Your level. Your story.
Sign in and start learning with Lemma right now.