Challang: Water Tracker

Hydration at a glance

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Log water, coffee, tea, and more. Watch your daily cup fill up and understand your hydration patterns at a glance. Challang is a simple, playful hydration tracker for the drinks you have throughout the day. Log water, coffee, tea, milk, and other drinks with their serving size. Challang applies a hydration credit for each drink and shows your progress toward today’s goal. As you log drinks, the water rises on the home screen so your progress feels visible. Key features • Quickly log drinks and serving sizes • Automatic hydration-credit calculation by drink type • Daily goal and progress tracking • Daily history and hydration-pattern insights • Personalized hydration goals • Optional reminders and Apple Health hydration logging • Available in Korean, English, and Japanese Challang is free to install. Free users can add up to 20 drink records per week. The monthly Challang Plus subscription removes the weekly record limit and adds cloud backup, Plus insight reports, and supported health-app sync. Health-app integration is optional. Challang does not provide medical advice, diagnosis, or treatment. Follow guidance from a qualified healthcare professional if you have a health condition or fluid restriction. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://challang.esangdan.com/privacy.html

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Challang is now available in English and Japanese. Change the language in Settings. This update also improves localization and stability across onboarding, drink logging, insights, and settings.

Version 1.1.0

The developer, E Sangdan Co., Ltd., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Health & Fitness
    • Purchases
    • Contact Info
    • Identifiers
    • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • E Sangdan Co., Ltd.
Size
  • 95.2 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPad
    Requires iPadOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and 2 more
  • English, Japanese, Korean
Age Rating
13+
  • 13+
  • Learn More
  • Infrequent
    Alcohol, Tobacco, Drug Use or References

    Contains
    Health or Wellness Topics
In-App Purchases
Yes
Copyright
  • © 2026 E Sangdan Co., Ltd.
  • Developer Website
  • Privacy Policy

    • More by E Sangdan Co., Ltd.