Ballasted

The Space Research Calculator

Free

Ballasted is a companion for neutral-buoyancy research, guiding you through every step of underwater gravity simulation. Simply enter a subject’s mass and select the target gravity, and the app: 1. Computes segment-wise ballast weights based on anthropometric models 2. Adjusts for material specific gravity to ensure accurate in-water loading 3. Outputs segmented totals for the torso, per-thigh, and per-ankle Ideal for researchers and trainers in neutral buoyancy facilities this tool cuts setup time and helps you focus on testing EVA procedures and equipment under realistic partial-gravity conditions.

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Now includes a feature to add the weight of a spacesuit to the test subject and calculate apparent weights! Also features an annotation to clarify the weights displayed are per-ankle and per-thigh.

Version 1.1

The developer, Charles Hanner, 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

    Accessibility

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

    Information

    • Seller
      • Charles Hanner
    • Size
      • 5.4 MB
    • Category
      • Utilities
    • Compatibility
      Requires iOS 18.0 or later.
      • iPhone
        Requires iOS 18.0 or later.
      • iPad
        Requires iPadOS 18.0 or later.
    • Languages
      • English
    • Age Rating
      4+
    • Copyright
      • © 2025 Charlie Hanner
  • Privacy Policy

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