1- Download last release
2- Extract zip file then run Bear renamer
3- Chose your method
4- Enter path of your target directory
Nothing can't go back
Enter number 1 in console to append your custom text in the beginning of all files
Enter your custom text or a single char so ro remove from all files name
Enter your new string or char to replace it with old one
for beuilding your customized app install: pyinstaller : https://pyinstaller.org/en/stable/index.html