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SpeedCrunchNumi
Free

Free and open source under the GPL.

 Freemium

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

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

Checked October 2, 2026

Checked October 1, 2026

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