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Editable calculations with automatic dependency updates

Subject calculators and a custom calculator builder

Editable notes with live scientific calculations

An Android notepad for colored text memos, checklists, reminders, and calendar notes.

A Windows source-code editor with syntax highlighting, tabbed files, and search across documents.

A notepad calculator with variables and calendar expressions

A notepad that calculates alongside written working

A keypad calculator with clear, memory and percentage controls

AI notepad for back-to-back meetings that uses your computer audio.

A graphing-calculator emulator in the browser

A TI graphing-calculator emulator for classroom explanation

Everyday calculation categories with a simple keypad

Notes, variables and arithmetic in a browser

Everyday calculations with topic-specific explanations

Programmable scientific arithmetic with saved formulas

Scientific, graphing, fraction and matrix calculations

Readable calculators for quick everyday tasks

Natural-language calculation beside short notes

Organize dividend portfolios and compare income-growth scenarios

Standard, scientific, programmer and date calculations

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