Teachers & Academies
Connect Teaching and Learning
What students learn in class carries over into everyday review and speaking, and those records help guide the next decisions in class. Connect for free with a class code.
SAUNA Platform
Four ways to learn, all in one record
Value Proposition
Bringing the Classroom and Learning Together
Student Progress & Achievement Management
Don’t just look at totals. You can review each student’s vocabulary and grammar progress, habit signals, and what to revisit—all in one flow.
Free Class Code
Issuing class codes, connecting students, pacing alignment, and the basic dashboard are free. Only automation and advanced analytics are paid, in tiers.
Safety for Minors
We protect student (minor) data and uphold the consent framework.
Word
Memorized Phrases
Grammar
Ingrained structure
Diary
A Sentence for My Day
SelfCall
Conversation spoken out loud
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. AI polishes what you write and say yourself—examples, grammar, diary entries, and calls.
CEFR Level Badge
Growth made clearer by international standards
A1
A2
B1
B2
C1
C2From A1 to C2, level labels are organized based on international standards and learning evidence—not guesswork.
Evidence-based learning
Not feelings—evidence. Put people first, not features.
You can start for free. Every word and example sentence is built on evidence.
Forgetting Curve Review
Instead of repeating mindlessly, you revisit only what you need at the moment when forgetting is more likely.
Habit Science
We design a rhythm that continues even after you take a break—without turning streaks into pressure.
International CEFR Standard
From A1 to C2, we align learning levels and content difficulty to international standards.
Quantitative evidence data
Based on frequency, difficulty, and usage data, we choose the words and sentences you need right now.
Operations Flow
From class code to records
Issue Class Code
Students connect by code, and teachers create their first class without payment.
Connect Students
Group learners by class and group, and follow the lesson flow.
Check Progress
Check vocabulary and grammar records, and habit signals, before and after class.
Maintain Protection Standards
Minors’ data and visibility settings start with conservative defaults.
My Sweat Map
A record that captures every drop of sweat at a glance
Your daily traces don’t disappear—they remain as patterns.
Request a Consultation
We help schools and academies get started
Privacy
You always decide who can see your records. By default, it’s close to “Only me.”
Transparent Operations
Price changes are announced first, with the reason and timing, and canceling stays just as clear and accessible as signing up.
Honest Rewards
There’s nothing you get by luck. It’s exactly as much as the sweat you’ve shed.
Shall we connect teaching and learning?
Review school/academy onboarding, class code operation, and student data protection standards together.