This app used to open numbers in whatsapp without saving them to contacts. It's the same as clicking an unknown number on a group or saving a contact.
Useful in situations like :
- Someone called you and you want to get in touch with it via WhatsApp?
-You need to send a message to someone else, but you don't want to save it?
-Do you want to start a chat with yourself?
Disclaimer: This app is not affiliated with nor endorsed by WhatsApp Inc.