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Desktop unit conversion with custom conversion definitions

A notepad calculator with variables and calendar expressions

Measurement conversion across everyday and engineering units

Production schedules with episode, unit and conflict controls

Android scientific calculation with symbolic and graphical tools

A handheld-style scientific calculator for Android

Linked mathematical views for algebra, geometry and graphs

Cloud-service cost estimates with inspectable assumptions

Azure cost scenarios from selected services and usage

Formula calculators with selectable input units

Practical finance, cooking and unit calculations

Editable notes with live scientific calculations

Formulas and notes arranged on a mathematical worksheet

Monthly cost scenarios for planned cloud workloads

Arbitrary-precision arithmetic that keeps track of units

Topic-based calculators for practical questions

Mathematics and practical calculators by subject

Integration with visible input, steps and graphs

A searchable catalogue of calculations and conversions

Air-travel carbon estimates with a published methodology

A maintained HP-42S calculator simulator

Visual calculator forms with custom price rules

Graph equations, inspect points and evaluate functions

Equations explored through graphs and symbolic methods