Transparent math. Step-by-step protocols. Works offline.

Dilution calculations. Solved in seconds.

LabCalcPro is a precision calculator for laboratory solution preparation — with transparent math, step-by-step protocols, and bench-ready output.

Download on the App Store See screenshots

No account required. Works offline.

Screenshot Placeholder

Calculator with completed calculation

Works offline

All calculations run locally on your device. No internet required, no servers involved.

Your data stays local

No accounts, no cloud sync, no tracking, no ads. Saved calculations never leave your phone.

Transparent math

Expand the math section to see every formula, unit conversion, and rounding step applied.

Features

Built for the bench.

Purpose-built tools for laboratory solution preparation — from quick C1V1 calculations to multi-step serial dilutions.

Instant Calculations

Enter your stock concentration, target, and final volume. Results update as you type — no "Calculate" button needed.

Step-by-Step Protocols

Get clear, numbered instructions: which pipette, how much to transfer, how much solvent to add. Ready to follow at the bench.

Serial Dilution Support

When a single step won't work, LabCalcPro automatically plans a 2-stage serial dilution with named intermediates.

Show Your Math

Every calculation is fully transparent. Expand the math section to see the formulas, unit conversions, and rounding applied.

Pipette-Aware Rounding

Configure your lab's pipettes (P20, P200, P1000). Volumes are rounded to your pipettes' actual resolution.

Save & Share

Name and save calculations for later. Export steps as plain text to share with colleagues via any messaging app.

How it works

Three inputs. Full protocol.

Enter what you want

Target concentration and final volume.

Enter what you have

Stock concentration and solvent.

Get your protocol

Numbered steps, pipette selections, warnings, and full math — instantly.

Screenshot Placeholder

Input → Result flow showing calculator in action

Bench Mode

Take it to the bench.

Tap the flask icon to enter Bench Mode. Your screen stays awake, inputs and math collapse, and your protocol is displayed in large, easy-to-read text. Just prop up your phone and follow the steps.

Screen stays awake while you work
Large text optimized for reading at arm's length
Protocol assumptions footer for traceability
One tap to return to full view

Screenshot Placeholder

Bench Mode — large text protocol view

App Preview

See it in action.

Calculator (Light Mode)

Screenshot placeholder

Calculator (Dark Mode)

Screenshot placeholder

Bench Mode

Screenshot placeholder

Serial Dilution

Screenshot placeholder

Saved Calculations

Screenshot placeholder

Show Your Math

Screenshot placeholder

Your data stays on your device.

LabCalcPro performs all calculations locally on your device. No accounts. No cloud sync. No tracking. No ads.

Your saved calculations are stored in a local database that never leaves your phone.

This app is a calculation and planning utility for laboratory solution preparation. It does not provide medical, clinical, safety, or experimental technique guidance.

Ready to simplify your prep?

Download on the App Store

iOS 16+. No account required.

Questions or feedback?

We're here to help — reach out anytime.

Contact support