Forgetting Curve Review
Instead of repeating mindlessly, you revisit only what you need at the moment when forgetting is more likely.
A language learning platform that remembers every drop of sweat
SAUNA turns the time you spend learning a foreign language into skills that stay with you.
You memorized it, then forgot it. When you tried to say it, you got stuck. And after a few days off, it felt like you were back at the beginning, didn’t it?
Core learning can be started for free.
- Core learning is free
- Again, just as you start to forget
- A record that continues even when you rest
Today, we’re waiting for your first step
The one waiting when you return
It’s not a mascot that rushes you to speak every day. It quietly watches, cheers you on when it’s needed, and even if you come back after a long break, it welcomes you in the same place.
First, we want to tell you this.
It’s not because you’re not good enough.
It was hard to endure those long stretches alone when the results weren’t visible. SAUNA doesn’t blame learners—it starts by changing the very approach that boredom, frustration, and fear made so difficult to keep up.
The Promise SAUNA Keeps
There are no shortcuts in foreign languages. But you don’t need to walk the same path over and over again.
Learning Connected as One
What you learn today becomes what you’ll say tomorrow.
From words to grammar, from notes to speech. Learning records across the four services connect seamlessly so you don’t repeat the same effort.
01
Word
The words you’ll review today—we’ll pick them for you. Give us 5 minutes.
Word
Grammar
Diary
SelfCall
The four services don’t work in isolation. Memorized words become diary entries, then phone conversation lines—and mistakes in your diary turn into review again.
How to Remember the Sweat You Shed
Effort doesn’t disappear—it comes back.
For SAUNA, remembering isn’t about storing records. It’s about bringing them back when you need them—and showing how things have changed.
Brings it back when you forget
Just when you’re about to forget, we’ll pick only what you’ve forgotten and bring it back for you.
01
Today in the Past
Your diary entry from this day a year ago, side by side — you can feel how much you’ve grown, even without tests.
02
To my future self
Write a letter to your future self, a few years from now. When that day comes, let’s open it together.
Evidence-based learning
Not feelings—evidence. Put people first, not features.
International CEFR Standard
From A1 to C2, we align learning levels and content difficulty to international standards.
Global from the start, safe from the start
Built on CEFR·ISO international standards, it captures differences in language and region, and places protection of minors and guardian consent at the start of the service structure.
Trust and Responsibility
Minor Protection and Guardian Consent
We protect minors and honor guardian consent from the start, and handle sensitive information with care.
Transparent Operations
Price changes are announced first, with the reason and timing, and canceling stays just as clear and accessible as signing up.
You can export your learning records for free anytime.
This time, it’s worth trying again.
Core learning can be started for free.