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A focused math solver with examples and reference links

Math input with worked examples across several subjects

AI math solver and tutor with step-by-step answers, PDF homework help, and study tools.

Mathematical problem solving with displayed working

Connected personal-finance spreadsheets for US budgets and cash-flow review

Compare crypto discussion, blockchain activity and market behavior

Bank activity for personal cash-flow dashboards in spreadsheets

Account transactions and balances for your own Google Sheets budget

Build formula screens and examine their historical matches

Screen stocks and compare fundamentals beside portfolio exposure

Install and manage command-line software through formulas on macOS and Linux.

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.

Turn stock-ranking ideas into screens and portfolio simulations

Build custom dashboards with connected data and spreadsheet-style calculations.

AI data analyst for spreadsheets and reports

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.

An open-source classroom whiteboard with shared rooms and private student canvases.

AI reader that explains confusing text in research papers

Structural calculators with free tools and paid design checks

Engineering calculations with steps and interactive models