Kig review

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Kig is interactive geometry software for students and teachers who want to create and explore geometric figures on a desktop. It supports constructions from points, vectors, lines, and polygons, with direct mouse editing so users can investigate how a figure changes. It also draws mathematical figures for inclusion in other documents. Its fit is strongest for established users of desktop construction tools who value interactive exploration over a broader classroom or practice suite.

The construction workflow covers more than static drawing: users can construct objects using other objects as arguments and build loci. Imported macros extend the application, and macros can be written with Python. Those capabilities make Kig useful for users who want to repeat or expand construction work, while keeping the focus on geometry rather than guided exercises. It is a downloadable desktop application, not an online classroom service, and it does not include proof or problem practice features. Learners seeking structured practice or classroom tools should consider a broader geometry suite instead.

Kig is open-source software distributed under GPL-2.0-or-later, and the published distribution is free. KDE provides Linux installation information and links to macOS builds. The supported desktop platforms make it a fit for solo users and small groups working in those environments, rather than teams seeking a browser-based shared workspace. Community, email, and documentation are listed support channels. Choose Kig for interactive constructions, loci, and document-ready figures; look elsewhere if online collaboration, classroom management, proofs, or practice problems are central requirements.

Kig pros and cons

• Where it wins
  • Explore constructions built from points, vectors, lines, and polygons
  • Modify construction elements directly with the mouse
  • Create loci and extend functionality with Python-written macros
• Where it doesn't
  • Desktop application for Linux and macOS, not an online classroom service
  • No proof practice or problem practice features
  • No classroom tools

Kig fact sheet, pricing and score →

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Last updated 7 Oct 2026 · How we research and update