Numi is a handy calculator app for macOS. It allows you to describe tasks naturally and instantly get an accurate answer. For example, $20 in euro - 5% discount or today + 2 weeks.
You can use Numi from command line on Linux and macOS. Not all features are supported yet. To start using install with Homebrew:
brew install nikolaeu/numi/numi-cli
Usage example:
numi-cli "20 inches in cm"
For all support inquiries send an email to mail@numi.app.