Diary
Write up to 200 English words about your real day—or use Gen to imagine the natural next chapter after your latest Story.
Korean, made personal
Write about a day you actually lived. Haru turns it into Korean you want to understand, remember, practise, and hear in your own voice.
Your first Diary is available before sign-in. English learning experience at launch.
I made tteokbokki at home today. It was spicy and chewy, just like my favourite K-drama scene.
오늘 집에서 떡볶이를 만들었어요.
Today, I made tteokbokki at home.One living thread
Haru keeps one Story connected across the moments when you discover, practise, revisit, and speak it.
Write up to 200 English words about your real day—or use Gen to imagine the natural next chapter after your latest Story.
Receive a natural Korean Story grounded in what you wrote, with focused grammar, contextual vocabulary, phrases, and predicates.
Reconstruct sentences from your most recent learning material. Feedback is tied to the same Story rather than a generic course.
Review with completion and recall exercises drawn from your latest Diary, so practice stays close to language you cared about.
Keep the grammar, vocabulary, and phrases you want to revisit. Mark what you have mastered without losing the Story it came from.
Your future voice
Create one voice profile with consent, then play your Korean Story in a fluent version of your own voice. Adjust playback speed to match your listening level.
Voice cloning is optional. You can replace or delete your profile, and local Supertonic remains a device fallback when remote audio is unavailable.
오늘은 제가 직접 만든 떡볶이를 먹었어요.
The public walkthrough will appear here after the launch video passes privacy and product review.
Plans
Core learning and the optional voice experience belong to everyone. Plus expands how much you can create and practise each month.
$0
$17.99 / month on web
$19.99/month in the mobile app
Plus is the planned launch offer. Checkout remains off until business registration, Paddle onboarding, the backend Free/Plus catalog, product identifiers, webhook verification, and final policies all match.
Account access
Create an account after your first Diary to keep your learning history. Email accounts require verification before sign-in.
Purchase is not live. You can still test account access against a configured backend.