Ecleti (www.ecleti.com) has updated TS Calc, its Mac app for solving mathematical models, to version 1.7.
TS Calc solves the equations from a numerical point of view as-you-type. You enter the input values inside the table and the output is instantly calculated. Version 1.7 is optimized for macOS Mojave.
TS Calc requires macOS 10.10 or higher. It costs $14.