FunCalc

A calculation notebook that keeps your work, variables and results together.

• uTools
• uTools plugin

• Keep your calculationsPreview expressions as formulas, then press Enter to calculate and save a snapshot. Search and reuse past expressions; changing a variable never rewrites earlier answers.
• Variables and matricesReuse named variables and the previous result, ans. Calculate matrix products, transposes, determinants and inverses, with clearly typeset results.
• History stays localHistory and variables are stored in local IndexedDB without automatic deletion. Export a JSON archive before clearing plugin data. No network connection is required at runtime.
• Ready from uToolsLaunch from uTools using FunCalc or its new Chinese name, or pass a selected expression into the notebook. Keyboard controls, light and dark themes and a compact layout are included.