MEP Toolbook

Native iPhone and iPad calculators for HVAC/MVAC, Electrical LV, Plumbing & Drainage, unit preferences, saved results, and exports.

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MEP Toolbook

Design-support calculators. No account required.

One app for practical MEP checks.

MEP Toolbook is built for engineers, technicians, students, and reviewers who need fast SI-first design-support calculations without a backend account.

HVAC/MVAC

Air-side, psychrometric, pipe, equipment, energy, and room-load workflows.

Electrical LV

Demand, running cost, power factor, voltage drop, load schedule, cable, containment, and UPS/generator helpers.

Plumbing & Drainage

Water storage, pumps, drainage capacity, fixtures, pipe pressure loss, and review helpers.

MEP Toolbook calculator library on iPhone — Calculator library

MEP Toolbook result notes screen on iPhone — Result notes

MEP Toolbook settings and standards screen on iPhone — Settings and standards

Standalone and conservative.

The app has no account system, no advertising, no tracking SDKs, and no company backend. Optional Pro subscriptions are processed by Apple In-App Purchase.

Privacy: Calculator inputs and saved calculations stay on the device.
Use: Design-support only; verify results against project requirements and professional judgment.
Exports: Pro unlocks local saved calculations plus text, CSV, and PDF report exports.