Hissab is an app that enables users to perform various calculations- including quick calculations- complex workflows- basic math- and percentage operations. It also offers helpful date- time- and timezone calculations- unit conversions- and alternate number systems and binary operations. The pro version of Hissab provides additional features such as currency exchange rates- autocomplete suggestions- organization tools like books and pages- and the ability to break down large unit values into multiple units. Hissab is accessible on web- mobile- desktop- and browser platforms.