Numi is a handy calculator app for macOS. It allows to describe tasks the natural way and instantly get an accurate answer. For example, $20 in euro - 5% discount or today + 2 weeks
Omni Calculator is a tool that has 351 different types of calculators under one roof making it super simple for anyone to solve their day-to-day calculations and math problems with ease in no time.
Lofree Digit Calculator is the first retro inspired mechanical calculator. Its mechanical switches offer a tactile and responsive typing experience to help let increase your efficiency and productivity.
Time Well $pent is a Chrome extension that helps you be more intentional with your money, so that you can spend your time on the things that actually matter to you. Enter your salary and it will automatically convert prices on all websites to time (i.e. the amount of time it takes you to earn that amount of money in the first place).