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A tutoring whiteboard combining shared lessons, PDFs, formulas, quizzes, and flashcards.

Convert colour values and collect palettes for design or code.

Use NCS notations and tools to communicate colour choices.

Let users choose from a visible set of colours with one click.

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

Work with multidimensional arrays and vectorized numerical operations in Python.

A strength-training log with programmable progression rules

Algebra entry with solving, factoring and graphing modes

Symbolic tensor calculations for field-theory problems

Draw publication figures with geometric snapping and LaTeX text

Interactive piano practice with video and sheet music.

Integration with visible input, steps and graphs

Notes, variables and arithmetic in a browser

Molecular masses, formulas and isotope distributions

Tablature editing and backing-track practice

Progressive note-reading drills across seven clefs

German accessible literature to borrow or buy

Official GRE practice tests, vocabulary resources, maths review and test-maker guidance.

Jazz lessons with pathways and guided practice.

Everyday calculations with topic-specific explanations

Engineering worksheets that mix formulas and explanation

Scientific expressions with variables and numerical calculus

Android scientific calculation with symbolic and graphical tools

Symbolic transformations for very large expressions