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A maintained HP-42S calculator simulator

Visual calculator forms with custom price rules

Use versioned colour scales designed for accurate data communication.

Graph equations, inspect points and evaluate functions

Equations explored through graphs and symbolic methods

Read scientific PDFs and export your notes on Mac

Process image stacks and quantify segmented structures

Large Quantitative Models that use physics, chemistry, and scientific data to produce quantitative results.

Science vacancies paired with events and career guidance

Scientific-literature search with an augmented reading feature

Engineering formula calculators by discipline

An iPad-first tutoring board that saves lessons as A4 pages in a book for each student.

Render technical Markdown and notebooks into reports, books, slides, and websites.

Scientific equipment and measurement photographs with useful captions

Space and science media with captions, download formats and reuse guidance

Mortgage broker that compares lender rates and shows the real cost of each loan.

Compare text contrast with its size, weight and colour direction in view.

WordPress forms for estimates, payments, and front-end submissions

Food nutrient lookup, comparisons and personal recipe records

Algebra entry with solving, factoring and graphing modes

A notepad calculator with variables and calendar expressions

Current-limiting resistor calculations for LED arrays

A simplified photovoltaic energy-production estimate

Instrument-specific observing calculations