Reef Salt Calculator 2026

Salinity and water change tool

Only for iPhone

$0.29 · Designed for iPhone. Not verified for macOS.

iPhone

Reef Salt Calculator is designed for marine aquariums, reef tanks, and small saltwater tanks. It helps estimate salt dosage, water change volume, and salinity changes after top-off or maintenance. Core features include tank volume calculation from dimensions, sea salt grams for a target salinity, reverse water change calculation from current and target salinity, maintenance logs for water changes, salt additions, top-off, and measurements, plus saved tank templates and salt mix parameters. All data stays on the device for long-term offline use.

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Added a feedback feature.

The developer, Nanjing Yunxiaochuang Technology 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 Not Collected

    The developer does not collect any data from this app.

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

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

    Seller
    Nanjing Yunxiaochuang Technology Co., Ltd
    Size
    950.3 KB
    Category
    Utilities
    Compatibility
    Requires iOS 15.6 or later.
    • iPhone
      Requires iOS 15.6 or later.
    • iPod touch
      Requires iOS 15.6 or later.
    • Mac
      Requires macOS 12.5 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 8 more
    • English, French, German, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish
    Age Rating
    4+
    Copyright
    © reefSaltCalc-dh-2026