This app send replies automatically on whatsapp, whatsapp businesss and other whatsapp versions.You can customize rules as per your choice. You can disable it any time even you can set days to send reply like sending on sunday only or sending on sunday and monday only.
Features

Customize every message
Get notify every time
Supports multiple apps
Night mode implemented
Message without saving no
Settings to turn on and turn off each day(If u ll turn off the app won’t send message on that day)
Check reports of all sent messages
Room database is used as a local database(Best Database said by Google)
Add a delay in reply
Add a header message to all message
Add a footer(signature) message to all message
Send only on particular time i.e On night or sleeping time
Reply directly from server
Every single message will be sent to server(If you ll set server reply)
You can append sender firstname, lastname, date , time to replying message
Customizable Terms & privacy page (Seperate HTML files)
No need to register
Many more features
Bulk messaging feature is also there