You could have downloaded LeanCalc 1.3 for Mac from our software library for free. LeanCalc-1.3.zip is the most frequent filename for this application's installer. The following version: 1.3 was the most frequently downloaded one by the program users. The unique identifier for this program's bundle is ch.entropy.leancalc. The software lies within Education Tools, more precisely Science. The actual developer of this free software for Mac is Marc Liyanage.
From the developer:
LeanCalc can be used for simple arithmetic as well as complex calculations, thanks to calc’s large built-in function library. All calculations are kept in a history and you can reuse the results of the last few calculations in the history directly using keyboard shortcuts.
You may want to check out more Mac applications, such as Gee, Arcade Math Blocks or NLVM, which might be similar to LeanCalc.