Pricing
So that price never becomes a barrier to learning
Start core learning for free and choose only the services and depth you need. No bundling or keeping you tied down with records.
Fair Pricing
Start free, only pay for what you need
Pricing by Service
From free to Max, for every service
Your tier isn’t a wall that locks content—it’s the depth of your support. Even for free, you can keep learning the essentials, and the higher you go, the more generous the AI feedback, choice range, and analysis become.
Word
- Free · Unlimited review practice · Basic AI feedback · Free data export
- Premium · Generous AI feedback · Choose your CEFR level freely · Monthly learning report
Grammar
- Free · Basic Grammar Internalization · Basic AI Feedback
- Premium · Near-unlimited grammar internalization · Generous AI feedback · Weekly report
Diary
- Free · Unlimited AI correction · Unlimited listening & speaking · Free Today in the Past & Future Diary
- Premium · Plenty of AI artwork creation · Shadowing read-aloud analysis
SelfCall
- Free · Daily scripted SelfCall trial
- Premium · Plenty of SelfCalls · AI script generation · Score-free speech comparison
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.
Products by Service
As much as you need, as your role requires
Word & Grammar — Learners, Teachers, Parents (3 products)
Three subscriptions tailored to your role. Teacher Class Code basic features and parent child sign-up & payment management are free.
Diary & SelfCall — Learner Only
It’s a service centered on your own records and speech, so one learner subscription is all you need.
No forced bundles
Use just one service for life for a truly complete learning experience. We don’t force you to bundle four.
Multiple Subscriptions
The more you subscribe to, the lower each service’s price gets
Other options besides subscription
Subscription isn’t the only answer
Individual Payment
Only pay monthly for the features you need instead of a subscription. If the total exceeds the subscription price, we’ll let you know first that “a subscription is cheaper.”
Learning Habit Bootstrapping
A 12-week graduation program that starts with pocket money and ends without it (Word & Grammar). Includes a Premium subscription for your child + a parent coach. If you graduate early, choose one: credits, subscription replacement, cash, or a charitable donation.
Follow along
A relationship-based product that lets you follow the learning of your parent, partner, or friends. It starts only after the other person accepts, and progress is independent for each of you.
Ads and Giving Back
The company doesn’t keep ad revenue
Ads that don’t interrupt learning
Ads appear only before and after lessons. They won’t interrupt you while you’re learning, and the gem-charging ads are something you choose yourself when you want.
The full amount goes back to learners
Ad revenue from the Free tier isn’t kept by the company—it goes into the SAUNA Reward Pool and is paid out to learners who keep showing up and sweating it out.
Habit Level
As a crystal grows, your consistency shines through
Bronze
Silver
Gold
Platinum
Sapphire
Ruby
DiamondThis level can’t be raised with an external payment. Only learning you’ve actually kept up changes the crystal’s density.
Reward Graphics
Giving back is remembered not just in numbers, but in scenes
Milestones and the ad revenue given back to learners are shown not with gambling-style effects, but as “scenes where the sweat you’ve shed remains.”
- Gem crystals stand for rewards and premium achievements
- Salt crystals never disappear—effort that endures
- Warm light brings the joy of milestones
Honest Pricing
Here’s how we set our prices
You only need to choose the one service you need. We don’t bundle services and sell them together.
Even if the price goes up, we’ll keep the price for those who are already subscribed. If it changes, we’ll let you know at least 30 days in advance—honestly, including the reason.
Price changes are announced first, with the reason and timing, and canceling stays just as clear and accessible as signing up.
If you complete 7 days, we’ll gift you Premium for 7 days. Not for the price—just the experience.
You can export your learning records for free anytime.
With an annual payment, you get two months free. (The applicable scope by service will be provided when pricing is finalized)
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.
Can’t find the answer you’re looking for? Leave a message for us about billing or subscriptions.
You can start for free.
Subscriptions are optional, and getting started is free. Take the first step—just open the door.