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NumiSpeedCrunch
Freemium

Free to download, with a paid license offered on the website.

 Free

Free and open source under the GPL.

Windows, macOS, Linux, Command line Windows, macOS, Linux
  • Write calculations as natural text with variables
  • Built-in currency, unit and time zone conversion
  • Results update as you type
  • Up to 50 digits of precision
  • Licensing terms are set by an end user license agreement rather than an open license
  • Not a scientific or graphing calculator
  • Latest advertised release is the long-standing 0.12
  • Keyboard-centred design may not suit button-only users
Downloadable app Downloadable app
Closed source Open source
License not stated License: GPL-2.0-or-later
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked October 1, 2026

Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.