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Offline-first iPhone app

An offline-first laboratory calculator for iPhone

BenchLine is designed for trained laboratory users who need routine bench calculations without accounts, analytics, advertising, cloud sync, or internet dependency.

Why offline matters

Core calculation workflows remain available at the bench without relying on network access or a remote service.

Privacy-first design

The app does not collect personal data and does not include analytics or advertising SDKs.

Local saved workflows

Presets, calculation history, settings, and active session state remain on the device.

Professional boundaries

BenchLine supports calculations but does not replace SOP review, laboratory records, or quality systems.

Offline calculation areas

Reusable workflow

From quick reference to reusable workflow

This page explains the calculation. BenchLine Lab Utility is designed for using these workflows repeatedly at the bench.

The app keeps the input values, units, formula basis, warnings, method notes, saved presets and calculation history together on your iPhone. It works offline and does not require an account, subscription, ads or cloud calculation storage.

  • Use the website for quick reference.
  • Use BenchLine when you want the calculation workflow available offline, saved locally and ready to reuse.

A focused offline-first laboratory calculation app for trained bench users, including dilution, serial dilution planning, molarity and mass calculations, buffer preparation, unit conversion, RPM/RCF conversion, saved presets and local calculation history.