Offline machinist calculators for iPhone and iPad

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Workshop Calc brings common shop calculations and references into one focused, offline-friendly toolkit. It covers metal-weight estimates, unit and fraction conversion, tap-drill and thread data, bolt circles, chamfers and countersinks, speeds and feeds, measurement over wires, material lookup, workshop geometry, and reusable job records. A substantial free core works without an account or advertising. The optional one-time Pro unlock adds advanced tools, unlimited history, custom shop data, and PDF, CSV, DXF, JSON, and guarded G-code exports—without a subscription. Companion browser calculators on YunFanLabs let people try representative workflows before installing. Results are estimates and starting points; critical work should always be verified against standards, manufacturer data, calibrated tools, and qualified judgment.
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