Is it free software so it can be added to the f-droid repo? They have not nearly as insane requirements as the other distribution channels and encourage donatio

Is it free software so it can be added to the f-droid repo? They have not nearly as insane requirements as the other distribution channels and encourage donations. I can't find a source link anywhere so I guess its proprietary? Edit: While trying to sign in, the service required me to add a special character to my 32 character long alphanumeric password. Requiring the user to use x different kind of character types just annoys people and doesn't make your service more secure.