Gradalith: Soil Lab

Gradation and USCS workspace

$2.99 · Designed for iPad. Not verified for macOS.

Reduce gradation data, interpolate D10/D30/D60, calculate Cu and Cc, and keep Atterberg evidence beside USCS cues. Gradalith: Soil Lab is a geotechnical field companion for plotting grain-size distributions, calculating gradation coefficients, and organizing repeatable soil-classification work. KEY FEATURES - Sieve and hydrometer gradation workspace - Semi-log D10, D30, and D60 interpolation - Uniformity and curvature coefficients - Atterberg limits and plasticity cues - Transparent USCS decision support - Editable sample records plus CSV import - Scenario comparison and plotted curve - Local PDF analysis packet - Forty original offline soil-lab reference plates ONE-TIME AND PRIVATE - One paid download; no subscription or in-app purchase - No account, advertising, analytics, tracking, or developer-operated backend - Core tools and bundled reference material work offline - Work remains on device unless you deliberately import, share, or export through an Apple system interface Classifications are field and study aids, not a stamped geotechnical opinion. Follow project specifications, laboratory procedures, and qualified engineering review.

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    Information

    Seller
    • Robert Corbin
    Size
    • 82.8 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Age Rating
    4+
    Copyright
    • © 2026 Robert Corbin
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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