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Radio and circuit calculations for component design

Subject-aware problem solving with worked steps

Mathematical worksheets with natural notation and units

Formulas and notes arranged on a mathematical worksheet

Scientific and everyday calculations with units

Symbolic and numerical mathematics with notebook interfaces

Symbolic calculation through a compact command interface

Symbolic, numerical and graphical mathematics tools

Everyday calculation categories with a simple keypad

Engineering calculations documented in natural notation

Compare mathematical curves with a shared time parameter

Test sentiment and market rules, then inspect the individual outcomes

Engineering formulas organized by discipline and quantity

Algebra solving with topic examples and practice

A distraction-free Markdown editor for writing notes as readable documents.

A file-based knowledge app with a block editor, databases, workspaces, and live collaboration.

A Markdown writing and notes app with folder and Library modes for Apple devices.

An open-source notebook for multimedia notes, attachments, and personal reference material.

An Android workout log with routines, exercise history and lifting tools

Compare colour references, build complements and convert colour data.

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

Engineering formulas with live diagrams and worked guides

Engineering calculations with steps and interactive models

Personal emissions estimates with quick and detailed inputs