DatumNest: Tolerance Stack

Worst Case & Monte Carlo

$0.99 · Designed for iPad. Not verified for macOS.

Model signed tolerance contributors, rank variance, compare limits, and run 12,000 repeatable assembly simulations offline. DatumNest is a mechanical tolerance-stack laboratory for product engineers, machinists, quality teams, manufacturing students, and design-review conversations. Build a signed one-dimensional chain with explicit nominal values, bilateral tolerances, sensitivity coefficients, notes, and distribution assumptions. DatumNest calculates nominal closure, worst-case range, RSS standard deviation, variance contribution, and a deterministic 12,000-run Monte Carlo yield screen against entered limits. KEY FEATURES - Signed dimension-chain workspace - Worst-case min and max closure - RSS standard-deviation estimate - Rectangular, triangular, and normal ±3σ assumptions - Variance contribution ranking - Seeded 12,000-run Monte Carlo distribution - Editable specification limits - Local engineering PDF report - 300 original offline technical plates - No account, ads, analytics, tracking, IAP, or subscription DatumNest is an engineering screening and communication tool. Confirm datum schemes, geometric effects, correlations, distribution assumptions, process capability, units, and acceptance criteria with qualified design and quality personnel.

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    Information

    Seller
    • Robert Corbin
    Size
    • 130.5 MB
    Category
    • Developer Tools
    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.
    Languages
    • English
    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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