DatumNest: Tolerance Stack

iOS app by Shadowfetch · App Store ID 6792421849 · iOS

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.

Get it. DatumNest: Tolerance Stack is on the App Store for iPhone and iPad.

Privacy and support

Privacy information for DatumNest: Tolerance Stack · Support for DatumNest: Tolerance Stack

Questions: shadowfetchapps@gmail.com

DatumNest: Tolerance Stack · App Store ID 6792421849 · Published by Shadowfetch · shadowfetch.com