Launching soon on iOS and Android

The mechanical reference book. In your pocket.

Threads, tolerances, unit conversions, standard components and tightening torque calculators. Based on UNI/EN/ISO standards. Offline, always.

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Built for every role in the workshop

🔧

Technician / Mechanic

Quick answers in the field. Works with dirty hands, on a small screen, with no internet connection.

📐

Draftsman / CAD Operator

Find the right standard component fast. Tolerances, fits and ISO symbology always at hand.

⚙️

Design Engineer

Pre-sizing calculators and complete normative references for concept and detailed design.

Everything you need. Nothing you don't.

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Threads

Metric ISO, Whitworth, trapezoidal. Coarse and fine pitch, with all dimensional data.

⚡

Unit Conversions

Pressure, force, torque, length and more. Instant, no internet needed.

📏

Tolerances and Fits

ISO fits browser and tolerance calculator, based on UNI EN ISO 286.

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Standard Components

Bolts, nuts and washers tables. ISO dimensions, ready to use in drawings.

🔨

Tightening Torque

Two methods: quick ISO 898-1 and precise VDI 2230. Pre-filled from component tables.

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100% Offline

All data is on-device. No account, no subscription, no internet required.

What's coming next

v1.0 — Available now

  • Threads
  • Unit Conversions
  • Tolerances and Fits
  • Standard Components
  • Tightening Torque Calculator

v1.x — Coming soon

  • Materials database
  • Keys, pins and snap rings
  • Bearings tables

v2.0 — In the pipeline

  • Beam deflection calculator
  • Shaft sizing
  • Bearing L10 life
  • Cross-section inertia

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