SAUNA

The language-learning platform that remembers your sweat

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Parents & Guardians

Your Child’s Foreign Language Learning—Learn Together with Peace of Mind

We’re building a service that leaves behind the power to learn on their own—not one that keeps children engaged for longer. First, review safety, autonomy, and the role of the guardian.

View Safety Standards

Safety and Privacy

A Promise Kept from the Start

Minor Protection and Guardian Consent

We protect minors and honor guardian consent from the start, and handle sensitive information with care.

Default is 'Only me'

Learners choose the sharing scope themselves, and for minors the default is more conservative (not public and no real-name display).

Haru and Guardian Peace of Mind Assets

Like a quiet companion by your child’s side

Haru’s reassuring expression, with towel and band accessories and a water-droplet effect, directly conveys a sense of safety and care.

Minor Protection and Guardian ConsentDefault is 'Only me'Transparent Operations

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.

Tools for Parents

So you can be right there by their side

Account, Billing & Monitoring Management

Manage your child’s sign-up, payments, and progress with a parent account. It’s free, regardless of tier.

Progress Dashboard

See your child’s current level, the expected time for the next level, and how far they have left until graduation at a glance.

AI Parent Cheer Coach

It also stays by parents’ side, helping them find the best way to encourage their child.

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

Learn together

Start with pocket money—end without it.

Follow along

Parents and children follow each other’s learning. Both sides must accept to start, and each person progresses independently.

Learning Habit Bootstrapping

Start with allowance—end without it. It’s a program that helps your child study independently (about 12 weeks by default, tailored to your child’s pace).

If you graduate early, you can also choose to donate the remaining funds to another friend’s education.

How to Build Motivation

Pocket money is just a starter.

“If you do well on the test, you get spending money” can push the fun out of studying if it’s designed the wrong way. SAUNA uses spending money only as a “starter,” and is designed so motivation shifts toward “money → meaning → learning becomes part of me.”

The child suggests first

Let your child suggest the goal and the allowance amount first, and you act as a negotiation partner. Feeling like they chose it themselves is the first step toward motivation.

Allowance decreases gradually

It starts with pocket money, but if you see them studying on their own, it gradually decreases. By graduation, they do it on their own without pocket money.

Specific praise

Not “Good job,” but more like, “You’ve perfectly mastered five phrasal verbs.” Our AI Parent Cheer Coach will help you.

Habits, one by one

Finish your vocabulary first, then grammar—don’t try to build multiple habits at once. That’s the fastest way.

Transparent Progress

The current level and the distance left to the next level appear in real time on the parent dashboard.

Rest is a right

We respect the choice to say, “I want to take a break this week.” Rest isn’t a penalty—it’s the strength to keep going longer.

Early Graduation Special Choice — Sharing

If you graduate early, you can choose what to do with the remaining balance: credit, subscription replacement, cash refund, or a charitable donation. Donations help create learning opportunities for another child, but they’re never required—credit is the default choice.

Whatever you do, avoid these

  • Pressuring with “I gave you money, so work harder”—one sentence like that can collapse the design.
  • Setting goals unilaterally without discussing with your child — autonomy is lost.
  • “Make them donate the remaining money”—giving shines only when a child chooses it themselves.
The app shows virtual points, and the actual payout is at the parents’ discretion. The child’s goals and reflection entries are private by default, so they can write honestly without feeling awkward.

Start with confidence, with your child

Parents watch from the side, while learners choose for themselves and continue on.