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pdd vs Soulver CLI: catalog facts
pdd	Soulver CLI
Free Free and open source under the GPL.	Free Free to install via Homebrew or GitHub.
Windows, Command line	macOS, Command line
Quick date and time difference calculations from the terminal Built-in countdown timer	Natural-language maths, units, currencies and dates in the terminal Accepts piped input for use in scripts
Command-line only, with no graphical interface Requires Python 3	macOS only Small project with limited documentation
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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