SAUNA

The language-learning platform that remembers your sweat

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About SAUNA

So that foreign languages don’t stand in someone’s way

우리가 어떤 마음으로, 무엇을, 어떻게 만드는지 이야기할게요.

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Supersalt Story

Become someone like salt in the world

소금은 드러나지 않지만, 빠지면 음식의 맛이 살지 않습니다. 우리는 그렇게 삶에 스며들어 가능성을 끌어내는 존재가 되고자 합니다. SAUNA는 수퍼솔트가 세상에 내놓는 첫 번째 소금입니다.

Connection of Two Names

When sweat dries, it becomes salt

땀의 주성분은 소금입니다. 사우나에서 흘린 땀은 사라지지 않고, 시간이 지나 기억과 숙련과 성장으로 결정화됩니다.

우리의 미션

외국어가 인생의 장애물이 되지 않도록

포기한 사람들의 뒤에는 포기하고 싶지 않았던 마음이 있습니다. SAUNA는 지루함·좌절감·두려움이라는 불순물을 걷어내는 곳입니다.

Why in the AI era

In the AI era, why learn a foreign language?

Feel the Texture of Culture

Even if AI moves the letters, it can’t move the air and the ink inside them.

The moment you meet face to face—without a device

Eventually, the moment comes when you have to open your mouth yourself.

The Basics for Using AI Properly

Someone who knows whether the translation is correct is someone who knows that language.

My Growing Experience

Only the sweat you’ve shed yourself becomes fully yours.

For whom

Who is this service for?

Student — Learn and take exams at your own pace
Parents — Support your children and learn together
Exam Prep — Efficient Order to Reach Your Target Level
Office workers — foreign languages as a work tool, in spare time
Immigration & Jobs — the words of that place you’ll go to, all the way to local variations
Life & Interests — Keep the feeling you started with
Teachers & Academies — Connecting Classes and Learning

네 가지 학습

Four Learning

Word

Even if it’s wrong, there’s nothing to lose. It means we’ll get another chance to meet.

  • Don’t throw “school” and “academy” together. Start with the meaning you need right now.
  • Read, listen, write, and speak. Build these four strengths separately.
  • The words you’ll review today—we’ll pick them for you. Give us 5 minutes.

Grammar

Don’t memorize grammar. We’ll help you switch to the body’s sensations that react the moment you see it.

  • A new example comes up every time. So I can’t memorize it and get it right.
  • Start with the basics—one layer at a time. You don’t learn everything at once.
  • Memorized words become grammar examples, and learned grammar brings words to life.

Diary

If you write in a foreign language, AI will fix it and cheer you on.

  • If you feel stuck, start with “What did you do today?” I’ll show you examples that include the vocabulary and grammar you learned.
  • Side by side today, one year ago — I feel like I’m growing even without any tests.
  • Write a letter to yourself a few years from now. When that day comes, open it together.

Self Service

When the bell rings, answer. The person in the story calls you.

  • The words and grammar you memorized today become the dialogue exactly as they are.
  • We don’t judge by score. We’ll show the original lines alongside your voice.
  • The more you repeat the same scene, the faster—your body remembers it, even without subtitles.
Your service doesn’t feel disconnected. Memorized words become diary entries, then phone conversation lines—and mistakes in your diary turn into review again. Let AI polish what I write and say—examples, grammar, journal entries, and calls.

Word

Memorized Phrases

Grammar

Body-embedded structure

Diary

A Sentence for My Day

Self Service

Conversation spoken out loud

Your service doesn’t feel disconnected. Memorized words become diary entries, then phone conversation lines—and mistakes in your diary turn into review again. Let AI polish what I write and say—examples, grammar, journal entries, and calls.

How to Remember the Sweat You Shed

How to Remember the Sweat You Shed

되돌려줌

잊을 즈음, 잊은 것만 골라 다시 꺼내줄게요.

보여줌

얼마나 자랐는지, 눈으로 보여줄게요.

Congratulations

In meaningful moments, I’ll be happy with you.

과거의 오늘(지난 일기와 나란히)과 미래의 나에게(그날이 오면 열리는 일기), 그리고 '나의 땀 지도'로 쌓인 모든 노력을 한눈에 보여줍니다.

A Return That Isn’t in Vain

Review you didn’t do today won’t disappear. Let’s meet again tomorrow and fill it in together.

Rediscover Forgotten Words

It’s okay if you forget words you once learned. Meet them again as “forgotten words,” and this time, help them stay longer.

My Sweat Map

A record that captures every drop of sweat at a glance

Your daily traces don’t disappear—they remain as patterns.

Today, in the Past1
To my future self2
Rediscover Forgotten Words3

Learning as a habit

학습을 습관으로, 땀 흘린 만큼 돌려받기

Consistency, as a rating

매일의 한 걸음이 등급으로 쌓이고, 외부 결제로는 올릴 수 없어요.

Get back what you sweat for

광고 수익은 회사가 갖지 않고, 꾸준히 땀 흘린 학습자에게 환원돼요.

Travel: the final reward

Go to your learning language’s region and try it firsthand — for some, it’s an opportunity.

Habit Level

Like a decision growing, your consistency becomes clearer.

Bronze
Silver
Gold
Platinum
Sapphire
Ruby
Diamond

This is a level you can’t publish via external payments. Only learning that’s actually completed changes the density of your decisions.

Reward Graphics

Redemption is remembered not just as numbers, but as moments.

Use the owned effect assets from 01-23/24 to show ad returns and milestones as “a scene where sweat is shed instead of something shady.”

  • Gemstone decisions are tied to rewards and premium achievements
  • Salt crystals never disappear—effort that endures
  • Warm light brings the joy of milestones
There’s nothing you get by luck. It’s exactly as much as the sweat you’ve shed.

Evidence-based learning

왜 효과가 있는가 — 근거 기반 학습

Forgetting Curve Review

잊을 즈음 다시 꺼내, 같은 시간에 더 많이 남게.

Habit Science

습관 형성에 평균 약 66일이 걸린다는 연구를 반영.

International CEFR Standard

레벨과 콘텐츠를 국제 표준 위에서 설계.

Quantitative evidence data

보이는 모든 단어·예문이 근거 위에 만들어집니다.

CEFR Level Badge

Growth made clearer by international standards

A1
A2
B1
B2
C1
C2

From A1 to C2, level labels are organized based on international standards and learning evidence—not guesswork.

Brand Story

Brand Story

The language platform that remembers your effort

A place that removes impurities that turn foreign languages into life’s obstacles

사파이어 블루오렌지흰색다크레드
And learning companion Haru — a presence that walks beside you, always waiting.
Haru - Welcome

Welcome

It’s okay to drop by after a long time. Haru always welcomes you with even more warmth.

Haru - Support

Support

Not talkative. She watches quietly, then speaks when it matters most.

Haru - Joy

Joy

Not “Good job.” Say, “You did it.”

Haru - Peace of Mind

Peace of Mind

It’s okay. Just getting back now is enough for us to continue.

Haru - Awe

Awe

Let’s quietly check in—without missing even small progress.

Haru - Waiting

Waiting

If you open the door again, Haru will be waiting right there.

Your name is “Haru.” Small lessons that build up day by day become your language.
Not talkative. She watches quietly, then speaks when it matters most.
If you open the door again, Haru will be waiting right there.
It only rings when it’s needed. To avoid breaking your focus, even quiet is part of the design. Even if you’re wrong, don’t worry. Just move on to the next step gently.

Global Vision

처음부터 글로벌을 전제로 설계합니다. 국제 표준(CEFR·ISO) 위에서, 새 언어를 데이터 추가만으로 확장합니다.

Trust and Responsibility

미성년자 보호와 보호자 동의를 핵심 전제로 둡니다. 숨기지 않고, 가두지 않습니다.

Privacy

You always decide who can see my records. By default, it’s set to “Only me.”

Transparent Operations

모르게 올리는 가격도, 해지를 어렵게 만드는 장치도 없어요.

Honest Rewards

There’s nothing you get by luck. It’s exactly as much as the sweat you’ve shed.

Privacy Transparent Operations Honest Rewards
You can’t inflate an activity that’s only meant to last a moment and then leave. That’s why our records are honest.

Let’s start this journey together