Fill your day
Water, coffee, tea, milk — whatever you drink, your cup rises with it. One glance tells you how today is going.
Brand Story
Why we built Challang
Challang began with the feeling of water rising and softly moving. You first sense the day, then inspect records when needed.
Naming
Why we built Challang
Challang began with the feeling of water rising and softly moving. You first sense the day, then inspect records when needed.
Privacy friendly
Hydration Credit is an internal consistency standard, not a medical conclusion.
Official logo
Challang uses the circular water mark with the CHALLANG + FILL YOUR DAY combination logo.
Korean Word
What does “Challang” mean in Korean?
찰랑 is a Korean sound-symbolic word for liquid gently filling, shimmering or swaying. The name turns hydration into a feeling before it becomes a number.
Sound
It carries a soft water-like sound, close to a small splash or ripple.
Motion
It suggests a cup that is almost full and lightly moving.
Feeling
For the app, it means a day that fills up little by little without pressure.
Principles
The brand principles live inside the app.
Challang does not scold. A low day is part of the rhythm, not a failure.
Challang
The name carries the feeling of water rising and gently moving.
Lightness
The experience favors calm reflection over pressure.
Honesty
The product explains standards and limits clearly.
Voice
How Challang speaks
Challang does not scold. A low day is part of the rhythm, not a failure.
Challang combines the circular water mark with the CHALLANG wordmark and FILL YOUR DAY slogan.