Tiny and feature-rich calculator application created by Python powered by Tkinter. (GUI Calculator)

$ python app.py

The Tkinter library is built-in with every Python installation.

Read more: https://tkdocs.com/tutorial/install.html

At first you need to install the pyinstaller: $ pip install pyinstaller

Next:

$ pyinstaller --onefile -w app.py

Note: this is python. so everyone can emit and reverse(like decompile) your program.

I get the idea from a video.