Whats sem salvar nos contatos is a free Android app developed by Agência KSIX that allows users to start a conversation with a phone number directly from the app without having to save it to their cell phone contacts. This app is perfect for those who don't want to add application numbers to contacts. It is ideal for communicating with quick contacts and store customers. The app is very simple, quick, and practical, and it saves users the hassle of adding numbers to their phone's phonebook unnecessarily. It should be noted that this app was not developed by WhatsApp Inc.

Overall, Whats sem salvar nos contatos is a useful and efficient tool for those who want to simplify their day-to-day communication without cluttering their phonebook with unnecessary contacts.